1966 10 cm Sun- Geo-
Oct. Flux spot mag.
S_ Sq No. Ap

CMP of
Region
Number

Highlights

i
(Cont'd)

12 115 115 64 10

13° 123*123* 72 8

$

14 #121120 «+64

15 121121 60 4

16 121*120* 70 20

* adjusted for burst

R-8539 (2)
(N20)

R-8544
(26)

R-8545 (3)
(N06)

Geophysical: magnetically extremely quiet, 3 Kp0o, 4 KpO+ iono-
spheric F region relatively quiet.

Solar: spot decreases in size, radio int. 15, 21 cm radio noise
in R-8530; third small spot group continues in R-8530; small
spot continues, radio int. 6, and region over W limb in R-8528;
small spot continues, radio int. 5 and 21 cm radio noise in
R-8544; large spot increases in size, radio int. 23, 21 cm radio
noise and 1 subflare in R-8545; small spot appears, radio int.
28, 21 cm radio noise and 12 subflares in R-8546; br. green
corona NE limb; minor events: Ha (R-8528) 0838 with active pro-
minence region and br. surge and (R-8546) 0903 and 1132; m. and
dm. solar bursts 1215-1250.

Geophysical: very slight magnetic activity until 1800, slight-to-
moderate thereafter.

Solar: third small spot group continues in R-8530, radio int. 15;
large spot decreases slightly in size, radio int. 20, 21 cm radio
noise and 5 subflares in R-8545; large spot group appears, radio
int. 38, 21 cm radio noise and 9 subflares in R-8546; moderate
xed corona SW limb; major events: Ho (R-8546) impt. 2n, 0430-
0448D with cm. solar burst; minor events: Ha (R-8546) 1332 with
cm., m, and dm. solar bursts 1740; cm, solar burst 0230, 0340
and 0850; cm. and m. solar bursts 1045.

Geophysical: very slight magnetic activity; SID at 0430, 1334 and
1817.

Solar: third small spot continues, radio int. 15 in R-8530; large
spot continues, radio int. 22, 21 cm radio noise and 2 subflares
in R-8545; large spot group increases in size, radio int. 39, 21
cm radio noise and 9 subflares in R-8546; major events: Ha
(R-8546) impt. 2n, 1250-1403 with cm., m. and dm. solar bursts;
minor events: Ha (R-8530) 0735 with cm. and m. solar bursts and
(R-8546) 2352; cm. solar burst 0530; om., m. solar bursts 0705
and 1430.

Geophysical: very slight magnetic activity until 0900, quiet there-
after; SID at 0034, 0525 and 1308; aurora at ¢ = 58° over North
America 0000-0500, homogeneous band at $ = 58° over U.S.S.R. 1500-
1900.

Solar: third spot disappears, radio int. 12 in R-8530; large spot
decreases slightly, radio int, 21 and 21 cm radio noise in R-8545;
large Y spot group increases in size, radio int. 35, 21 cm radio
noise and 5 subflares in R-8546; minor events: Ha .(R-8546) 0500
and 1857 with cm. solar bursts.

Geophysical: very slight magnetic activity until 1500 with preli-
minary sudden commencement at 0954, moderate activity thereafter;
SID at 0413 and 1908; cosmic ray decrease; ionospheric absorption
at 30 Miz at Great Whale River from 1646 to Oct. 17 at 0520; homo-
geneous auroral arc frequently rayed overhead in § = 65°-66° over
Western Europe visible to ¢ = 58°, medium int. homogeneous rays
overhead at ¢ = 59° over U.S.S.R. 1700-2200.

Solar: R-8530 over W limb; large spot continues, radio int. 22 and
21 cm radio noise in R-8545; large By spot group continues, radio
int. 45, 21 cm radio noise and 13 subflares in R-8546; br. green
coronae NE and NW limbs; major events: Ho (R-8546) impt. 2b,
2045-2110 with em. and m. solar bursts; minor events: Ho (R-8546)
1204 with cm. solar burst; cm. solar burst 0720; cm, and m. solar
bursts 1810 and 1905; m. noise storm 0825-1400 and cm. and m.
noise storms 2000-0000.

- 59 -



Joly 8, 1967 00 ur Gl 2

FLARES

471 —

= 1/86

Bursts

vs

108 10 em flux
78 Re

July 9 1967 Our Ot

6 0 i if

one
1-24 2300-0305.

03

iy

kon magnetically quiet days; foncspherte F region relatively qutet; feint nocttlucent bands and whirls from 52°+55.5°%,

FLARES.

—— 95.

19/60
1/76

em

dm

Bursts

oto

2}I0

105 10 en flux
67

CMP Region 8880 821
16622 N1BCap)4
16023 124(Bp)2

6 @ i
One of five sagnettcally quiet daye; ionospheric F region relatively quiet;

2200-2310,

a

Joly 10, 1967 09 UT OF OSH Sta
FLARES
= 10/60 1/83

2 pos n
3 [lam 1 L
3 [om ri
© [om .

SIO

KRoys, 7
Bp [_KI Te a 1 oe rr _ =]te
SEE = a ati —jofie

iy 5 iJ ty te 5 a Ey

102 10 em flux
Sh Re One of five magnetically quict days; tonospheric P region relatively quiet.
Joly U1, 1967 or Oh OFT ot ee

FLARES — 24/7

— 20/75,

om L

2 [am

3 om

© | oxm iw

SID

X-Rays L

T_ke fe 30 rvs 3 ae. os ae 30. Zp
2 [ose Ilo

0 cy cy [J te 5 6 a

104 10 em flux
53 Re

GHP Region (8882) $40
16426 22(B)2

One of five oost magnetically disturbed days; fonoapheric F region disturbed; faint noctilucent billovs S5*=56°N, 10°E~

4,S°W 2260-0145,

- 123 -



Abbreviated Calendar Record

1966 10 cm Sun- Geo- CMP of Highlights
May Flux spot mag. Region
SS, No. Ap Number

The period showed the effects of a recurrence sequence starting 2 April. Most of May and June
were noticeably quiet Lonospherically.

1 90 92 50 8 R-8279(3) Solar: spot continues, radio int. 10, 21 em radio noise
(N30) and 1 subflare in R-8279; small spot, radio int. 7 and
7 subflares in R-8282; spot, radio int. 15 and 21 cm
radio noise in R-8284; radio int. 10 and 1 subflare in
R-8285; Byspot appears in R-8278; minor events: Hy
(R-8285) 1608; active dark filament (R-8282) 2112 and
2236.
Geophysical: slight magnetic disturbance until 0900, quiet
thereafter; ionospheric F region still slightly disturbed.

2 92 9% 48 12 Solar: spot gone, radio int. 12, 21 cm radio noise and
2 subflares in R-8279; small spot, radio int. 7 and 2 sub-
flares in R-8282; spot continues, radio int. 13, 21 cm
Fadio noise and 1 subflare in R-8284; spot appears, radio
int. 10, 21 em radio noise and 1 subflare in R-8285;
small spot, radio int. 9 and 1 subflare in R-8278; minor
events: HY (R-8282) 0703, (R-8285) 0806 with cm. solar
burst, (R-8284) 1030E; type IV, 19-41 Mz, 1216-1248 and
1300-1317; type II, 12-41 MHz, 1223.5-1237.5 and 1306-1317;
active dark filament (R-8282) 0000.

Geophysical: slight magnetic disturbance 0600-0900 and

1500-2400; SPA at 0153; ionospheric F region disturbed.

3 92 9% 57) 5 Solar: small spot appears again, radio int. 6, 21 cm radio
noise and 9 subflares in R-8279; spot disappears in
R-8282; Py spot, radio int. 16 and 21 cm radio noise in
R-8284; small spot, radio int. 12, 21 em radio noise and
3 subflares in R-8285; small spot growing, radio int. 15
and 10 subflares in R-8278; small spot and 1 subflare in
R-8286; minor eventa: lr (R-8278) O900E, (R-8285) 1453;
active filament region (R-8279) 0824.

Geophysical: magnetically quiet with slight magnetic dis~

turbance 2100-2400; ionospheric F region slightly disturbed.

4 91 92 61 12 R-8284(2) Solar: small epot, 21 cm radio noise and 3 subflares in

(N25) R-8279; spot continues, radio int. 13, 21 cm radio noise
and 7 subflares in R-8284; small spot, radio int. 9 and
21 em radio noise in R-8285; spot, radio int. 17 and 2 sub-
flares in R-8278; radio int. 10 in R-8289; minor event:
Hy (R-8278) 0150 with cm. solar burst.

Geophysical: continued slight magnetic disturbance until

1200, mostly quiet thereafter; S-SWF, SCNA, SPA and SES
at 0153; ionospheric F region slightly disturbed.

5 87 89 38 6 (R-8293) Solar! no spot mag. obs. Mt. Wilson; spot gone, 21 cm radio
N33) noise and 4 subflares in R-8279; spot continues, radio
int. 11, 21 em radio noise and 4 subflares in R-8284;
small spot continues, radio int. 8, 21 cm radio noise and
3 subflares in R-8285; spot gone but radio int. 14 and
1 subflare in R-8278; radio int. 10 in R-8289; minor
events: cm. solar burst 0845; eruptive prominence
(R-8278) 1745; sudden disappearance of filament (R-8285)
1858.
Geophysical: magnetically quiet; ionospheric F region
slightly disturbed.

-25-



tov. 13, 2967 @ ur Oh O28

FLARES

36/72

=m

as 36

to

a

&

‘Though only slight-to-nod
USSR at ¢ = 57* 1500-22005
on Explorer 34 peaks at ab

o
138 10 en flux
77 Re

CHP 9056 SLL (16559) $13 (op)

5068 $323)

Yow. 14, 1967 00 urd) O28 a

cy 2 5
fate activity, ont of five cost magnet
fonospherie F region slightly dtsturbe:
jout 1300 and continues through the 16th.

teally dfeturbed days; aurora overhead over
‘2; seal! proton increaze on >0%eV counter

09 a

FLARES

ie ie,

al Ip

ilo

B %

140 10 cm flux Aurora overhead over USSR

95 Re
CWP 9065 I7(265) (36561) MIT AE
069 $24
(16560) 122 BE
(16558) $21 (ap)?
(16569) $22 (8)1
Nov. 15, 1967 00 urd! 02

[7 2
ac @ = 57° 1600-2100.

a

FLARES

cm

dan
im

Bursts

‘Dkr

S10,

X-Rays
Ap [_Ke

jp

yo [se

ajto

146 10 em flux
98 Re

CHP 9066 N20(5) 16651 N16 (ap)5
(6562) m2 B

Nov. 16, 1967 00 ur OL 02

cy

2

a

Pa

FLARES

20/73

10/73 ——— 373

cm
dm

m

Bursts

Solge store,

Okm

TO.

X-Rays.
Ap [Ke

2 2,

fo }Ip

18 [Tse

2 jo

o 6

155 10 cm flux
119 Re peak at abour 0200,
cP (9084) $07

16563 N10 BE
16553 M12 8p

Wo. 17, 1967 OO UT OL OOS OT

08 2 5 8

Tonospheric F region relatively quiet; small proton increase on>i0 MeV counter on Explorer 34 shows second

FLARES

Bursts

o

Oe

Sip

fo}t0

6

green corona on NE limb

9070 336(5)

ca ie 5 8 a

observed 7 days earlier.

154

‘one of quietest days in year, one of five magnetically quict days; fonospheric F region relatively quiet; br.



oce. 20, 1967 ur 3} OSG we
FLARES a
|— s/s 10/32
> Lee 1
% [Com n
= tom felse storm
© [im
$10 n
X-Rays n
Te Tee. iz oF i rE ie co Te o ip
3 | se 2)ia
0 J 06 @ i 5 18 a 4
132 10 ca flux One of five magnetically quiet days; donospherle F rogioa relatively quiet.
83 Re
ce, 21, 1987 ur OHO ttt ttt tga) aes
FLARES
— 1/3
2 Le
3 [Cm
§ (=
Dk
S10. L
X-Rays i
We [Ke a 08 os oe be. i ta ts. TI»
[se O}10
w % CJ iz 8 8 a 4
231 20 ew flux one of the quietest days in year, one of five magnetically quict days; ionospherte F region relatively quiet.
80 Bz
MP (G01) S04
16530 K17 (Bp)4
oct. 22, 1967 00 ur | 2H SO tte
FLARES
apsse —— 18/34
» om 7
@ [Com ri
$a
@ [ke
310 rn z
X-Rays ni
Bp [Ke og oe ie. a 2s 3 = ‘olIp
6 [se 1330), Olle
0 8 6 we 2 15 i a %
139 10 em flux One of ten magnetically quiet days.
85 Re
emp 9032 117
9033 29¢4)
9036 822
ce. 22, 1967) urd] OHO tt
FLARES
= tb/34
> Len
3 [Com ri
és
‘Dk
S10.
X-Rays A
Ap [_Kp. Ec 2 + 7 0. ry es ‘O)ip
3a [ose ‘alto
wo e cy 9 @ 5 18 a i‘
AL 10 cm flux Br. red corona 7 days earlier on SE Lind.
ton Re
ow 16529 M10 (BEDE
oct, 24, 196700 ur Ol 0205 Okhotsk
FLARES
10/32 = da/34 — 10/34 35
> ri 1
% [Com n
© Tone
0} n
KRays i
Ap [_Kp Go 19. At. evs " 1 Jo. iz ‘ojIp
« [se O}t0
o 8 6 8 i 5 18 a Ey

143 10 om flex
93 Re

CHP $034 m2(2) 16531 NLL Cap)2
2)

9035 820(2

one of five magnetically quiet days.

149



WORLD DATA CENTER A

National Academy of Sciences
2101 Constitution Avenue, N, W. Washington, D, C, U.S.A,, 20418

World Data Center A consists of the Coordination Office

and eight subcenters:

World Data Center A
Coordination Office

National Academy of Sciences

2101 Constitution Avenue, N.W.

Washington, D. C., U.S.A. 20418

Telephone (202) 961-1404

Airglow, Aurora (Instrumental and Visual): Meteorology (and Nuclear Radiation):
Cosmic Rays, Ionosphere and Solar Activity: World Data Center A:
World Data Center A: Meteorology
Upper Atmosphere Geophysics National Weather Records Center
Environmental Science Services Asheville, North Carolina, U.S.A. 28801
Administration Telephone (704) 253-0481

Boulder, Colorado, U.S.A. 80302
Telephone (303) 447-1000 Ext. 3654

Oceanography: |

World Data Center A: |
Geomagnetism, Seismology, Gravity and Tsunami: Oceanography i
World Data Center A: Building 160
Geomagnetism, Seismology, Gravity & Tsunami Second and N Streets, S.E.
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Telephone (301) 496-8160
Rockets and Satellites: |
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World Data Center A: Rockets and Satellites |
Glaciology National Academy of Sciences |
American Geographical Society 2101 Constitution Avenue, N.W. |
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Telephone (212) 234-8100

Upper Mantle Project:
World Data Center A: |

Longitude and Latitude: Upper Mantle Project
World Data Center A: Lamont Geological Observatory
Longitude & Latitude Palisades, New York, U.S.A. 10964
U.S. Naval Observatory Telephone (914) 359-2900 Ext. 209

Washington, D.C., U.S.A. 20390
Telephone (202) 698-8422

Notes:

(1) World Data Centers conduct international exchange of geophysical observations in accordance
with the principles set forth by the International Council of Scientific Unions. WDC-A is established
in the United States under the auspices of the National Academy of Sciences,

(2) Communications regarding data interchange matters in general and World Data Center A as a
whole should be addressed to: World Data Center A, Coordination Office (see address above),

(3) Inquiries and communications concerning data in specific disciplines should be addressed to
the appropriate subcenter listed above.



‘Day 10 cm Sun- Geo-
Flux Spot mag.

S$

No.

Ap

Tono- CMP of
Index Region
Ip Ia Number

‘Highlights

1967 June
24

(Cont'd)

25 129

26 124

27 127

28 132

96

79

61

80

24

24

oc)

10

0 0 R-8862(5)
(s17)

3 2 R-8863(2)
(22)

3 4 R-8867
(823)

burst; Hy (R-8852) 1056, 1114 with dm, m, and Dk solar burst, and
1348; m and Dim solar burst 0640, 0715, 0940, and 1000; cm, dm, m,
and Dim solar burst 1245 with. SID; cm, dm, and m solar burst 1655;
DSDs (R-8863) 0150-0245 and 0705-0715; SDFe ($23 E07) 0500-1600 and
(822 E05) 1225-1345 (25 June).

Solar: radio int, 8 in R-8852; small spots continue with radio int.
10 and 6 subflares in R-8854; spot seen with radio int. 8 in R-
8858; small spot in R-8860; spot group continues with radio int. 26
and 13 subflares in R-8863; spot group continues with radio int. 26
and 4 subflaxes in R-8867; spot appears for one day with radio int.
8 in R-8862; spot continues with radio int. 16 and 2 subflares in
R-8871; mod, green corona NE, NW, and SW limbs,

Geophysical: very slight-to-slight magnetic activity until 1500 with
sc at 0222, increasing to moderate activity after sc at 1521; iono-
spheric F region slightly disturbed in some sectors; cosmic ray de-
crease, 3%, reaches maximum late in day, begins recovery.

Events: minor: Ho (R-8863) 0105 with cm and dm solar burst; cm
solar burst 2320-0140,

Solar: small spot continues with radio int. 12 and 1 subflare in R~
8854; radio int, 8 in R-8858; spot gone but 2 subflares in R-8860;
spot group continues with radio int. 23 and 7 subflares in R-8863;
spot groupe continue with radio int. 26 and 6 subflares in R-8867;
spot continues with radio int. 13 in R-8871.

Geophysical: moderately severe magnetic, storm 0000-0300, subsiding
to very slight activity after 0900, increasing to slight-to-moderate
following sc at 1459; aurora over North America to ¢=56°, 0000-0500
and $=61°, 0600-1100; ionospheric F region very disturbed with some
auroral blackout at high latitudes; cosmic ray decrease recovers,
then begins another drop; faint noctilucent billows N56.5 WO7, 0050-
0100 and moderately bright bands N52.5-55 WO0-04.5, 2245-0120,

Events: minor: Hy (R-8854) 0650 with m and Dim solar burst; dm solar
burats 1230-1940; m solar bursts 0600-1450 and 1915-0100; Dim solar
bursts 0645-1415.

Solar: small spot at W limb with radio int. 14 and 1 subflare in R-
8854; radio int, 8 and 1, subflare in R-8858; spot group decreasing
in size with radio int. 30 and 9 subflares in R-8863; spot groups
continue with radio int. 26 and 7 subflares in R-8867; spot continues
with radio int. 14 and 1 subflare in R-8871; 1 subflare at E limb
in position of R-8875; radio int, 16 and 1 subflare in R-8876; mod.
green corona NE and SE limbs.

Geophysical: moderate magnetic activity until 0600, slowly subsiding
to very slight activity late in the day; aurora over North America
to @=55°, 0000-0500 and $=54°, 0600-1100; ionospheric F region very
disturbed with some auroral blackout at high latitudes; cosmic ray
decrease continues.

Ho (R-8875) 2001-2033, impt. 2b with m solar buret;

-8876) 0613 with m solar burst; dm solar bursts 1140-

1940; m solar bursts 0500-2400.

Solar: radio int. 14 in R-8854 at W limb; spot seen with radio int.
10 and 4 subflares in R-8858; spot group continues with radio int.

- 119 -



1966 10 cm Sun- Geo-
Nov. Flux — spot mag.
S 8, No. AP

CUP of
Region
Number

Highlights

29 101 98 #37 6

30 97% 95% 37 28

Dec.
1 95 92 35 W7

2 98 95 33 6

4 108105 57 19

* adjusted for burst

R-8593
vs)

R-8594
Q1)

R-8597 (3)
(826)

R-8599
23)

Solar: spot continues, radio int. 13 and 2 subflares in R-8584;
spot groups continue, radio int. 13, 21 cm radio noise and 2
subflares in R-8586; spot group continues, radio int. 11, 21 cm
radio noise and 2 subflares in R-8593; 2 subflares in R-8599;
minor events: Hx (R-8584) 2010 with br. surge and eruptive. pro-
minence; active prominence region (R-8584) 1015 and 1342; br.
surge (R-8584) 1322.

Geophysical: continued moderate magnetic storm 0000-0300, slight
activity until 1800, quiet thereafter; SID at 1511.

Solar: spot continues, radio int. 9 in R-8584 on W limb; spot
continues, radio int. 10, 21 cm radio noise and 1 subflare in
R-8586; spot group decreases in size, radio int. 8, 21 cm
radio noise and 4 subflares in R-8593; short-lived spot appears
in R-8599; minor events: Ha (R-8593) 1628 with cm. and m. solar
bursts; active dark filament (R-8593) 2000E-2400D.

Geophysical: slight magnetic activity 0000-0600, moderate activity
until 1800, slight-to-moderate activity thereafter; SID at 0445,
1628 and 2050; 30 MHz ionospheric absorption at Great Whale River
0200-2058 and 2306 to Dec. 1 at 2234; homogeneous auroral arc
overhead at ¢ = 57° over U.S.S.R. 1200-1700; ionospheric F re~
gion disturbed with auroral blackout at high latitudes.

Solar: spot group continues over W limb, radio int. 7 and 1 sub-
flare in R-8586; spot group continues, radio int. 7 and 21 cm
radio noise in R-8593; spot group continues, radio int. 6 and 3
subflares in R-8594; moderate green corona on NE limb; minor
event: cm. and m. solar bursts 1740; type IV, 17-41 MHz 1747-
1802.

Geophysical: moderate magnetic activity until 0900, slight activity
thereafter; F region disturbance dies away but appreciable black-
out at high latitudes.

Solar: spot group continues, radio int. 5, 21 cm radio noise and
5 subflares in R-8593; spot group continues in R-8594.
Geophysical: magnetically quiet; SID at 1210.

Solar: spot group continues, radio int. 5 and 3 subflares in
R-8593; spot group continues with 2 subflares in R-8594; spot
group appears, radio int. 16, 21 cm radio noise and 3 subflares
in R-8607; 1 subflare in R-8606 at E limb; 1 subflare in R-8609
at E limb; 3 subflares in R-8602; major events: Ha (R-8606)
impt. 2n 0845E-0945D with active prominence region; minor events:
Ho (R-8607) O910E with br. surge.

Geophysical: continued magnetically quiet, 2 KpO+; ionospheric
F region relatively quiet.

Solar: spot group continues, radio int. 8 and 6 subflares in
R-8593: spot group gone in R-8594; spot group continues, radio
int. 10 and 21 cm radio noise in R-8607; spot group at E limb,
radio int. 21, 21 cm radio noise and 3 subflares in R-86065
radio int. 8 in R-8609; minor events: Ha (R-8593) 0720E with
m. and dm. solar bursts; br. surge (R-8593) 2208.

Geophysical: very slight magnetic activity 0000-0600, slight-to-
moderate activity thereafter; homogeneous auroral arc overhead
at $= 57° over U.S.S.R. 1300-1800; ionospheric F region slightly
disturbed in some sectors with some auroral blackout at high
latitudes.



nov. 3, 1967 UT OH ETH
FLARES
n/t,
7 Lm i n n i n
& [am £ L i i n
5 om :
2 |e :
SID m n
X-Rays
Le = z ie a e = z z Oltp
23 [ose Toa, 3}10
8 & 9 @ 15 i) q a
140 10 cm flex one of five mont nagetically dteturbed days; auroza overhead over USSR at # = 57° at 1300, ¢ = 58° at 2000,
113 Be ‘and @ * 59° at 1400-1500 and 2100; br. green corona on SW Linb observed 7 days later; Sonoapheric F region
ee 9008 123 16539 116 (ap)3_ disturbed in sone sectors.
9047 S2i (1,2 & 3) 16343 822 (ap)é
16544 $22 (6P)5
nov. 4, 1967 Our Ol @ 8 08H tak
FLARES
1/7
> Le 1 n |
= [Cam n
5 (cm i
© {die n
S10, n 1
X-Rays i a
Fp [Ke = Ze z ie = Te oF Ed alte
3 |se ‘ato
Cy 8 08 9 2 5 8 a Eo
133 10 cx flux Avrora overhead over USSR at ¢ = 58° 1300-1700 and 2000-2400.
110 Re
nov. 5.1967 ® url & 8 % % % 7 8 gta
FLARES
1/53 = 10/47)
> Lem
3 (Cam
§ (2 i
‘Okm i
S10,
Rays
7 |__Kp. z eo Ed Zs ie ie fa}tp
a [se 3]10
o & cy id 6 te a a
124 10 om flux
91 Re
vow. 6, 1967 00 ur Ol 02 0804S OSC tae
FLARES
> pe n
& [Cdm
éfe i
kim
S10. i
X-Rays i
Ap [Ke cy iF = iz or rE ie iF lo]tp
4 [se O}te
00 oS cy co ie iy i a 4
122 10 em flux one of ten magnetically quiet days:
SL Re
Nov. 7, 1967 0 or Ol 02 03 OOS eat) aa
FLARES
= ta/47_— 19/47
2 ee
$ [Cam
a i
Okm
S10.
X-Rays n
Re [Ke a i i ie rr E = = O]Ip
af se lo}to
cy tf Cs i 15 i6 a 4

AIS 10 em flux
48 ee

wr 9059 S13
9034 120(3)
9056 Sil

One of Five magnetically quiet days; tonospheric F region

152

relatively quiet.



Day 10 cm Sun- Geo-

Tono- CMP of
Index Region
Ip Ia Number

Highlights

Flux spot mag.
S No, Ap

1967 January
16

(Cont'd)
wi2zi 59
igi2l0 72S
19 120 82 5
20131 82 «13
21143 102,009

0 2 R-8648
(24)

0 2 (R-8660)
(N24)

0 2  R-8649(4)
(N29)

0 3 R+8654
(N12)

spot appears, then disappears, radio int. 6 in R-8649; br. green
corona NE and NW limb: mod. green corona SE and SW limbs; solar
x-rays notably quiet quiet from 0126 to Jan. 17 at 2226.

Geophysical: slight magnetic activity continues.

Events: minor: Ha (R-8644) 0032 with SID and solar x-rays; ADF
(R-8647) 0324; BSL (R-8650) 1456B.

Solar: spot continues, radio int. 9 and 2 subflares in R-8644; spot
group continues, radio int. 15 and 2 subflares in R-8647; spot
group continues, radio int. 8 in R-8648; By-spot group, relatively
large in size, appears, radio int. 27 and 5 subflares in R-8650;
mod. green corona NE and SE limbs; br. green corona NW limb.

Geophysical: magnetically quiet.

Events: minor: Ha (R-8644) 0036; (R-8650) 2307 with cm solar
burst and SID.

Solar: R-8644 over W limb though 3 subflares appear; spot group
continues, radio int. 15 and 4 subflares in R-8647; spot group
increases slightly in size, radio int. 6 in R-8648; large spot
group continues, radio int. 29 and 6 subflares in R-8650; no spot,
radio int. 7 and 2 subflares in R-8651; no spot, radio int. 17
and 5 subflares in R-8659; br. green corona NE, SE and NW limbs;
no solar x-rays 0609 to 2217.

Geophysical: continued magnetically quiet except very slight
activity 1500-2100.

Events: mino: Ha (R~8650) 0030, 0616 with SID and 0636; (R-8659)
2003.

Solar: spot continues, radio int. 12 and 1 subflare in R-8647;
spot continues, radio int. 7 in R-8648; spot decreases in size,
radio int. 23 and 1 subflare in R-8650; no spot, radio int. 9
and 1 subflare in R-8651; spot appears, radio int. 18 and 2
subflares in R-8659; no spot, radio int. 8 and 2 subflares in
R-8654; no spot, radio int. 12 in R-8641.

Geophysical: continued’ magnetically quiet, some very slight
activity 1800-2400; ionospheric F region relatively quiet.

Events: minor: Ho (R-8650).0612 with SID and solar x-rays;

EPL (R-8641) 1420-1917.

Solar: spot group continues, radio int. 10 and 1 subfiare in
R-8647; spot decreases in size, radio int. 8 and 1 subflare in
R-8648; spot decreases, radio int. 23 and 3 subflares in R-8650;
spot group appears, radio int. 16 and 1 subflare in R-8651;
multiple spot groups appear, BY, radio int. 36 and 6 subflares
in R-8659; spot group appears, radio int. 12 and 3 subflares in
R-8654; R-8641 over W limb.

Geophysical: slight magnetic activity; aurora overhead in
U.S+S.R. to $ = 57° 1500-2000.

Events: minor: Ha (R-8659) 1511 with m, dm and cm solar burst,
SID and solar x-rays; BSD (R-8659) 2047 with dm and cm burst
and m type II, SID and solar x-rays; SID with solar x-rays at
1758; DSD (R-8654) 0245E; ADF (R-8650) 2026-0246.

Solar: spot group continues, now much smaller, radio int. 9 and
2 subflares in R-8647; spot continues, radio int, 6 in R-8648;
spot continues, radio int. 31 and 5 subflares in R-8650; spot
group increases in size, radio int. 10 in R-8651; multiple spots
increase slightly in total size, radio int. 26 and 16 subflares
in R-8659; spot group increases, radio int. 15 and 2 subflares
in R-8654; small spot appears, radio int. 21 in R-8655; no spot»

- 79 -



1966 10 cm Sun- Geo-
Mar. Flux spot mag.
S Sa No. Ap

CMP of
Region
Number

Highlights

16
(Cont 'd)

17° 106 10544 6

18 111110 53 4

19 116 115 60 20

(R-8212)
3,

23)
-8213)
(13)

1150, 1501, 1603, 1913, and 2145; cm. solar bursts 0110,
0425, 0605, 0730, 1315, 1515, 1530, 1625, 1940, 2130, and
2300; m. solar bursts 0730, 0910, 1315, 1420, 1515, 1530,
1625, 1940, and 2300; active dark filament (R-8207) 1330;
dark surges (R-8207) 1035, 1333, 1541, 1659, 1940, and
2131; br. surges (R-8207) 1323 and 1927; type IV's, 20-
41 Miz, 1621-1800 and 8-41 MAz, 1921-2045, and 22-41 Miz,
2255-2400.

Geophysical: slight magnetic disturbance 0000-0600, quiet
thereafter; S-SWF and SPA at 0105; SL-SWF, SPA and SFD at
1625; SL-SWF, SGNA, SEA, SES, SPA, and SFD at 1925; SPA
and SFD at 2150E and 2226; SPA at 0200 and 0426; SFD's at
1527, 1534, 1610, 1805, and 22555.

Solar: ‘y spot group continues to grow, radio int. 64, 21 cm
radio noise and 14 subflares in R-8207; radio int. 14 at
$10 E14; small spot, radio int. 15 and 3 subflares in
R-8204; radio int. 11 at N20 E30; minor events: He
(R-8207) 0131, 0356E, 0424E, 0559, 1356, and 1742;
cm. solar bursts 0130, 0200, 0230, 0320, 0340, 0420, 0440,
0555, 0640, 1145, 1155, 1745, 1900, 1915, and 2140;

m. solar bursts 0320, 0420, 0755, 0900, 1230, 1745, 2040,
and 2140; type IV, 22-41 MHz, 0000-0025; active dark
filament (R-8207) O115 and 1325; dark surges (R-8207)
0146, 0455 and 0525; loops (R-8207) 2053.

Geophysical: continued magnetically quiet with slight dis-
turbance 2100-2400; SL-SWF and SPA at 0131; SPA's at 0427
and 2148; SEA, SPA and SES at 1154; SL-SWF at 1653; SL-SWF,
SEA, SPA, SES, and SFD at 1744; S-SWF, SPA and SFD at
1917; upper portions of quiet arc overhead ¢ = 68°,
visible = 58° in Western Europe.

Solar: spot continues to grow, radio int. 78, 21 cm radio
noise, and 17 subflares in R-8207; small spot, radio
int. 10 and a subflare in R-8204; radio int. 12 at
S10 E20; radio int. 11 at N20 E10; minor events: Ha
(R-8207) 0420£, 1103E and 2337; cm. solar bursts 0015,
0205, 0410, 0640, 1710, 1750, 1905, 2230, and 2350;

m. solar bursts 0205, 0410, 0820, 1340, 1710, 1850, 2040,
2340; dark surges (R-8207) 1600 and 1826; active dark fila~
ment (R-8207) 2243.

Geophysical: continued magnetically quiet; S-SWF at 0423;
SFD's at 1752, 1913 and 1940D; ionospheric F region
relatively quiet.

Solar: spot group growing, radio int. 65, 21 cm radio noise
and 9 subflares in R-8207; small spot, radio int. 10 and
2 subflares in R-8204; radio int. 12 at $10 E10; radio
int. 9 at N20 W05; a subflare in R-8208; principal event:
Ho (R-8207) impt. 3b, 0337-0552 with cm. solar burst; dark
surge (R-8207) 0345; minor events: Ha (R-8207) 1422 and
2130; cm. solar bursts 0330, 1010, 1350, 1410, 1930, and
2040; m. solar bursts 0925, 1310, 1410, 1605, 1805, and
21303 type II, 30-41 Miz, 0006-0010; active dark filaments
(R-8207) 0006, 0252 and 1412, (R-8204) 0306; dark surge
(R-8207) 0129.

Geophysical: moderate magnetic disturbance with 1800-2400
Kp5-; S-SWF, SPA, SCNA and SEA at 0340; S-SWF and S¥D at
1356; S-SWF at 1710; SPA and SFD at 2142; ionospheric
F region disturbed; homogeneous arc aurora overhead at
#= 57° in U.S,S.R. fran 1300-1400.



July 28, 1967 00 UT O}

2 %

FLARES

|—19/05

wn
ae

99
10/07 oY "

inh

a 20 3] tp

O}ta

207 10 em flux
164 Re

GHP Region 8905 273)
16640 N27 &

Joly 29, 1967 00 ur OL

%

w o Pa

FLARES.
=

it
1e/0S

= = 1/9— 19/99
£/99 ~ 26/02 —te/— 005

= 05

2/01

=] 1p

la

209 10 em flux

154 Re

(AP Region 8907 1117
16639 N13GBY)5

Joly 30, 1967 00 ur OL

% fr)

Counic ray decrease midday recovering by end of day.

my

FLARES

10

om

Stora.

Se oF s]tp

3}Ia

205 10 em flux

165 Re

‘GHP Region 8909 ¥33(3)
Region (6919) $25
26443 W17(BD)S.

July 31, 1967 00 ur OL

EF ae 9 @ a a

One of five nost magnetically disturbed days; gradual cosmic ray decrease of about 3% during day to level maintained for
‘over # month; leasepheric F region very disturbed; aurora at = 58° over North America 0600-1700; bright green corona observed
7 days earlier on NE Linb.

CE SO

FLARES.

= b/s = 18/6

ie

wie

19/05 —1n/0: 1b/93 ——n/0:

Bursts

Tat

ot rr sip

or

183 10 em Flux

152 Re

GHP Region 8921 N23
Region 8912 $23

8 i 5

One of the five Aonoapherie F region relatively quiet

128 -



August 20, 196700 UT OF

®

3

FLARES.

yyaa

169 10 em Flux

13 Re

HP Region (8150) ¥21
Region 6934 524(3)

og

0

3

a 2

a

Avgust 21, 19670 ur ot

FLARES

A/a

=in/ie

ayer

em L

dim

im
Dim

Bursts

S10, n

Raye

iz

Bp [kp

6 [ose

175 10 em flux
120

Re
GHP Region 8947 ¥IL

Avguat 22, 196700 ur Ob

%

6 ri

One of the ten mognetically quiet days.

Bo 4

FLARES

Inf

lo Jtp

is

jo Jia

176 10 em Flux
123 Re

Avgune 23, 196700 uF

w

te iy

 tonoapherie F region relatively quiet.

a

ae

FLARES

062 tn

L TL

Bursts

174 10 cm flux
122 Re
GHP Region (6954) 126

& 8

One of the five magnetically quiet days; fonoapheric F region relatively quiet,

134 -



1966 10 cm Suh- Geo-
Dec. Flux spot mag.
S Sq, No. Ap

CMP of
Region
Number

Highlights

28 111108 48 14

29 113 109 =51 7

30 119 115 70 6

31 125*120* 68 3

%* adjusted for burst

R-8624
(827)

R-8625,
21)

Solar: visible spot gone but radio int. 6 in R-8620; spot groups
continue, radio int. 20, 21 cm radio noise and 3 subflares in
R-8624; spot group continues, radio int. 8, 21 cm radio noise
and 4 subflares in R-8625; spot group continues, radio int. 8
and 4 subflares in R-8626; radio int. 7, 21 cm radio noise and
1 subflare in R-8628; major event: Ha (R-8626) impt. 2b 1758-
1830 with em. solar burst.

Geophysical: slight magnetic activity; SID at 1757; 30 MHz iono-
spheric absorption at Great Whale River 0253-2220; ionospheric
F region still slightly disturbed on some regions with some
auroral absorption at high latitudes.

Solar: radio int, 7 and 2 subflares in R-8620; spot groups con-
tinue, radio int. 17, 21 cm radio noise and 4 subflares in
R-8624; spot group continues, radio int. 7, 21 cm radio noise
and 3 subflares in R-8625; spot group decreases in size in
R-8626; radio int. 7 and 21 cm radio noise in R-8628; radio
int. 9 and 1 subflare in R-8631 at E limb; moderate green
corona on NE limb; minor events: Ha (R-8628) 1437 with dark
surge; active prominence region (R-8631) 0855-1530.

Geophysical: very slight activity until 1200, quiet thereafter.

Solar: radio int. 7 in R-8620; spot groups continue, radio int.
14, 21 em radio noise and 3 subflares in R-8624; spot group
continues, radio int. 7 and 3 subflares in R-8625; spot group
continues over Limb in R-8626; radio int. 6 and 21 cm radio
noise in R-8628; spot group appears, radio int. 11 and 9 sub-
flares in R-8629; spot group, radio int. 12, 21 om radio noise
and 3 subflares in R-8631; radio int. 8 in R-8632; br. green
corona on NE limb; minor events: Ha (R-8625) 2135, (R-8629)
2231; cm. and m. solar burst 1345; type IZ, 5-280 Miz 2236-
2247; type IV, 26-41 MHz 2237-2257.

Geophysical: continued magnetically quiet until 1500, then
slight activity until 1800, quiet thereafter, 1 KpOt; SID
at 2233; ionospheric F region relatively quiet.

Solar: spot groups continue, radio int. 14 and 21 cm radio noise
in R-8624; spot group continues, radio int. 8 and 21 cm radio
noise in R-8625; radio int. 8 and 21 em radio noise in R-8628;
spot group growing, radio int. 19 and 5 subflares in R-8629;
spot group continues, radio int. 26 and 2 subflares in R-8631;
radio int. 12 and 1 subflare in R-8632; moderate green corona
on NE and SE limbs; minor events: Ha (R-8629) 0842 with cm.,

m. and dn. solar bursts, 1649 with cm. and m. solar bursts and
dark surge, and 1807, (R-8625) 1618; cm., m. and dm. solar bursts
1130-1330; cm. and m. solar bursts 1505 and 1845; type IZ, 22-41
Miz 1609-1620, 1630-1644, 1658-1706, <25->320 MHz 1656-1705; type
IV, 24-41 Mz 1709-1802.

Geophysical: continued magnetically quiet, 1 KpOt, 1 Kp0o; SID
at 0844, 1652 and 1838.

- 74 -



1966 10 cm
June Flux
S Sa

Sun-

Geo- CMP of

spot mag. Region

No.

Ap Number

Highlights

6
(Cont'd)

7 9% 97

8 97 100

9 96 99

10 94 97

1l 93 96

12 93 96

38

35

33

25

43

a

4 — R-8332(2)
(N23)

3 R-8334(5)
(20)

7 -R-8335(5)
(18)

R-8332; spot disappears in R-8320; radio int. 16 and
7 eubflares in R-8319 at W limb; radio int. 16 and
1 subflare in R-8335; minor events: Hy (R-8335) 07452;
nm. solar noise stor.

Geophysical: continued magnetically quiet; 1onospheric
¥ region relatively quiet.

Solar: spot gone in R-8326; radio int,:6 in R-8328; spot
size decreasing and radio int. 11 in R-8329; small spot
continues in R-8330; spot continues, radio int. 12 and
21 em radio noise in R-8332; 6y spot, radio int, 25 and
21 em radio noise in R-8336.

Geophysical: continued magnetically quiet except slight
disturbance 0300-0600 and 0900-1200; SPA at 2008; SCNA
at 2257.

Solar: no spot mag. obs. Mt. Wilson; spot continues, radio
int. 15 in R-8329 at W limb; spot no longer seen but
3 subflares in R-8330; spot size decreasing, radio int. 11
and 21 cm radio noise in R-8332; By spot continues, radio
int. 33 and 21 cm radio noise in R~8336; minor event:
Hy (R-8330) 1126E.

Geophysical: continued magnetically quiet especially 1800-
2400 Kp0+0o.

Solar: 2 subflares in R-8330 at W limb, spot size continues
decreasing, no radio int. report at 9.1 cm, 21 cm radio
noise and 2 subflares in R-8332; spot continues now By,
21 em radio noise and 4 subflares in R-8336; minor event:
Ha (R-8336) 1353 with active dark filament, br. surge and
dark surge.

Geophysical: continued magnetically very quiet, 0000-0900
Kp00; ionospheric F region relatively quiet.

Solar: spot decreasing, radio int. 8 and 1 subflare in
R-8332; By spot size increasing, radio int. 27, 21 em
radio noise and 2 subflares in R-8336; moderate green
corona and radio int. 13 in R-8338 at E limb; minor event:
om. solar noise at 0135.

Geophysical: continued magnetically very quiet, 0900-2400
Kp0+; ionospheric F region relatively quiet.

Solar: spot decreasing, radio int. 10 and 1 subflare in
R-8332; BY spot, radio int. 33, 21 cm radio noise and
10 subflares in R-8336; radio int. 7 and 2 subflares in
R-8334; radio int. 13 in R-8338; major event: HY (R-8336)
impt. 2n, 1036-1112; minor events: Hy (R-8336) 0603; cm.
and m. solar bursts 2345; type IV, 15-41 MHz, 2347.2-2358.

Geophysical: continued magnetically very quiet, 3 Kp0+;
SPA at 2030; SPA and SFD at 2349; ionospheric F region
relatively quiet.

Solar: small spot, radio int. 10 and 1 subflare in R-8332;
BY spot, size increasing, radio int. 37, 21 cm radio
noise and 9 subflares in R-8336; radio int. 7 in R-8334;
radio int. 13 in R-8338; minor events: Hy (R-8336) 0318
with em. solar burst, 0901 and 1058; m. solar noise
storm; cm. solar bursts 1010 and 1605; disappearance of
filament (R-8336) 0136.

Geophysical: continued magnetically quiet but with slight
disturbance 1200-1500; S-SWF, SFD, SES, SEA and SPA at
1603; S-SWF, SEA, SPA, SES and SFD at 2038.



Day 10 cm Sun- Geo- Iono- CMP of
Flux spot mag. Index Region
S.No. Ap Ip 1a Number

Highlights

1567 April
26
(Cont'd)

27 127 55 3.00

28 133 76 3. 0 0  R-8784(4)

(820)

R-8785)
(N23)

29 136 79 5 10

30.133 66 «©9633 0 R-8788(4)
(S23)

Geophysical: continued magnetically quiet with 4 Kp0+; ionospheric F
region relatively quiet.

Events: major: Ho (R-8791) impt. 2£, 2115-2257 with com and dm solar
bursts, SID and x-rays; minor: Ha (R-8791) 2025 and 2115; Dkm and om
solar bursts 0805; cm and m solar bursts, SID and x-rays at 1110 and
1242; cm noise storm 1815-2030; APR (R-8791) 0910-1600; BSL ($33
E limb) 2240.

Solar: R-8776 still active, goes over W limb; sunspot continues with
radio int. 13 and 1 subflare in R-8778; small spot continues with
radio int. 14 in R-8779; spot group continues with radio int. 19 and
1 subflare in R-8785; small spot group classed fy with radio int. 12
and 4 subflares in R-8788; small spot with radio int, 13 and 2 sub-
flares in R+8796; spot on E limb with radio int. 22 and 4 subflares
in R-8791.

Geophysical: continued magnetically quiet with 2 Kp0+; ionospheric F
region relatively quiet.

Events: minor: Ho (R-8791) 0025 and 1602 with cm and dm solar bursts,
SID and BSL; Ha (R-8776) 0745 and 1830; cm and dm solar bursts, SID
at 1545.

Solar: spot continues with radio int. 14 and 6 subflares in R-8778;
small spot gone, though radio int. 12 in R-8779; spot group classed
By continues with radio int. 17 and 6 subflares in R-8785; spot
group growing with rad‘o int. 18 and 3 subflares in R-8788; spot
group continues with radio int. 14 in R-8796; spot group continues
with radio int. 24 and 16 subflares in R-8791.

Geophysical: continued magnetically quiet with 4 Kp0+; ionospheric F
region relatively quiet.

Events: major: Ha (R-8776) impt. 2n, 0820-1005; minor: Ha (R-8776)
0525 with cm and dm solar bursts; Ha (R-8779) 0556; Ha (R-8778) 1249
and 1448; Ha (R-8779) 1330; Ho ($37 W29) 2368; Ha (R-8791) 2213; m
noise storm 0630-1345; SID at 0748-0900; ADF (R~8793) 2252; dm
solar burst 2350.

Solar: spot goes over W limb with radio int. 12 and 12 subflares in
R-8778; spot group continues with radio int. 16 and 4 subflares in
R-8785; spot group continues with radio int, 15 and 5 subflares in
R-8788; spot group continues with radio int, 13 and 3 subflares in
R+8796; spot group growing with radio int. 24 and 9 subflares in
R-8791; no spot, radio int. 6 in R-8779; br. green corona NE and
NW Limbs; mod. green corona SW limb.

Geophysical: continued magnetically quiet until 1200, very slight
activity thereafter.

Events: minor: to. (R-8791) 0048, 0607, 0726, 0959, 1053, 1146, 1250,
1514 and 2320; Ho (R-8781) 1151 and 1943; Ho (R-8778) 1203 with m
and Dkm solar bursts, 1954, 2035, 2206 and 2225; cm rise and fall
1450-1640.

Solar: spot group decreasing with radio int. 14 in R-8785; spot
group continues with radio int. 12 and 1 subflare in R-8788; spot
group growing with radio int. 20 and 4 subflares in R-8796; spot
group continues with radio int. 20 and 12 subflares in R-8791; small
spot with radio int. 19 and 4 subflares in R-8798; R-8779 and R-8781
go over W limb; br. green corona SW limb; mod. green corona NW limb.

Geophysical: magnetically quiet with 1 Kp0o.

Events: major: Ha (R-8798) impt. 2£, 1310-1325 with cm solar burst
and SID; minor: Ha (R-8791) 0454, 0601, 0901, 1048 with m solar
burst, 1154, 1303 with cm solar burst and SID and 1446; Ho (R-8781)
0835, 0922, 1259, 1855 and 2337; Ha (R-8779) 1610; Ha (R-8798) 2319
with cm and dm solar bursts and SID; Ha (R-8785) 2317; cm rise and fall
1215-1505; cm solar bursts 2130 and 2235; x-rays at 2255.

- 103 -



Highlights

366 10 cm Sun- Geo- CMP of
aly Flux spot mag. Region
SS No. Ap Number
12 99 103 62 15
13° 97 100 56 3
14 97 100 37. 4 —-R+8392(2)
ig)

15 98 101 34 8

Solar: spot size increasing, radio int. 26, 21 cm radio
noise and 5 subflares in R-8379; spot continues with 21
cm radio noise in R-8382; spot appears again with radio
int. 9 and 1 subflare in R-8390; radio int. 8 and 21 cm
radio noise in R-8392; spot continues with radio int. 8
in R-8394; spot appears and radio int. 11 in R-8396;
moderate green corona on NE limb; minor events: hy
(R-8379) 0555E with br. surge, 0727E with mand dm.bursts,
0813E, 0907E, (R-8373) 1035, 1405E with br. surge,
(R-8384) 14208; cm.and m.solar burst 1100; cm,solar burst
1230; br. surges (R-8397) 0138, 0402E and 1155; br. surge
(R-8382) 0314; active dark filament (N24 E10) 0459-1125.

Geophysical: slight-to-moderate magnetic activity until
1500; SL-SWF, SPA and SES at 1805; ionospheric absorp~
tion on 30 MHz ends at 2154; ionospheric F region dis~
turbed with some auroral blackout at high latitudes; at
0000-0500 aurora at 4 = 59° not overhead and at 0600-1100
aurora overhead at 4 = 59° over North America; noctilucent
clouds seen over Western Europe through breaks in almost
continuous low cloud at 51° at 2145.

Solar: spot group continues, radio int. 18, 21 em radio

noise and 5 subflares in R-8379; spot continues over

W limb with 21 cm noise in R-8382; small spot continues
with 4 subflares in R-8390; radio int. 10 and 21 cm
radio noise in R-8392; spot continues with radio int. 8
in R-8394; spot continues, radio int. 9 and 2 subflares
in R-8396; spot, radio int. 20, 21 cm radio noise and 2
subflares in R-8397; minor events: Hy (R-8390) 0533E,
(R-8396) 0550E and 0730E, (R-8379) 0724E with br. surge,
(R-8397) 1625 with eruptive prominence and br. surge.

Geophysical: magnetically quiet; G-SWF at 0530; SCNA at
1225.
Solar: radio int. 13, 21 em radio noise and 1 subflare

in R-8379 at W limb; small spot continues with 1 sub-
flare in R-8390; radio int. 8 and 21 cm radio noise in
R-8392; spot continues with radio int. 8 in R-8394; spot
continues, radio int. 10 in R-8396; spot continues, radio
int. 21, 21 em radio noise and 4 subflares in R-8397;
major event: Hy (R-8379) impt. 2£, 0735E~0743 with active
prominence region and br. surge; minor events: Hy (R-8396)
0610E, (R-8397) 0615E and 0929E; active prominence region
(R-8397) 1330-1401.

Geophysical: continued magnetically quiet; at 0000-0500
aurora at 6 = 58° not overhead over North America; br. dis-
play noctilucent clouds seen over Western Europe between
52° and 55° at 0115 to 0229.

Solar: small spot in R~8390 goes over W limb; radio int.

10 and 21 cm radio noise in R-8392; spot gone but radio
int. 8 and 1 subflare in R-8394; spot continues with radio
int. 8 in R-8396; spot continues, radio int. 16, 21 cm
radio noise and 3 subflares in R-8397; 3 subflares in
R-8385.

Geophysical: mostly magnetically quiet with 3 Kp 0+ but
with a preliminary sudden commencement at 1500 and Kp 4+
2100-2400; at 0000-0500 aurora at # = 58° not overhead
over North America; moderate display noctilucent clouds
over Western Europe between 56° and 57.5° at 2240 to 0220.

-~ 39 -



APPENDIX

LIST OF SELECTED STANDARD SOLAR-GEOPHYSICAL DATA PUBLICATIONS

For convenience of the research worker, a selected list of pe-
viodic publications by observatories, institutions or interna-
tional scientific organizations follows. The selection is
mainly concerned with solar observations, geomagnetic indices
and observations of distinctive geophysical events. Those con-
taining mainly the results of synoptic observations for iono-
sphere, geomagnetic, cosmic rays, etc., are not included.

Other lists of publications can be found in Annals of the IQSY,
Volume 1, pp. 308-309, M.1.T. Press, 1968, or in the AFCRL Geo-~
physics and Space Data Bulletin, Vol. IV, No. 2, Second Quarter
1967.

The following list is by title, author or editors, publisher
and publication frequency. Subset below each entry is infor-
mation on the period of the data included in one of the latest
issues (date of first issue given for some series) together
with theix issue date (or time of receipt at WDC-A). General
data contents of the latest issue are specified.

Twice monthly
"Daily Maps of the Sun", K. 0, Kiepenheuer, Fraunhofer-~

Institut, Freiburg/Breisgau, German Federal Republic.
Twice monthly.

Data for October 16-31, 1968, received WDC-A
November 1968.

Monthly

1. "Photographic Journal of the Sun", editor M. Cimino -
Osservatorio Astronomico di Roma, Italia. Monthly.

First issue January 1968

No. 10 - Solar Rotation 1538, data for 1968
August 21 - 1968 September 17, received WDC-A
November 1968.

Daily HO and Kan chromosphere pictures

- 164 -



1966 10 cm

CMP of
Region
Number

Highlights

10 124 122

R-8571
(N16)

R-8572
«N18)

Solar: R-8567 over W limb; spot continues, radio int. 9 and 21 cm
radio noise in R-8571; spot continues, radio int. 6 and 21 cm
radio noise in R-8563; spot group continues, radio int. 8, 21
cm radio noise and 5 subflares in R-8572; radio int. 8 in R-8568;
radio int. 30, 21 cm radio noise and 3 subflares in R-8573; minor
events: Hy (R-8572) 1334 with cm. and m. solar bursts and 1433E;
cm. and m. solar bursts 1025; br. surges (R-8573) 1036, 1215,
1330 and 1730.

Geophysical: continued very slight magnetic activity; SID at 0217
and 1436.

Solar: spot continues, radio int. 11 and 21 cm radio noise in
R-8571; spot continues in R+8563; spot group decreases in size,
radio int. 12, 21 cm radio noise and 3 subflares in R-8572;
other spots appear in R-8572; radio int. 7 in R-8568; 2 spot
groups appear, radio int. 53, 21 cm radio noise and 5 subflares
in R-8573; minor event: Ha (R-8573) 0734 with cm., m. and dm.
solar bursts, br. surge and active prominence region and 1103,
(R-8572) 1109; cm. solar bursts 1750-2150; br. surge (R-8573)
0520.

Geophysical: magnetically quiet, 2 KpOt, until 2100, slight
activity thereafter; SID at 0731 and 1810.

Solar: spot continues, radio int. 9 and 21 cm radio noise in
R-8571; spot gone in R-8563; spots continue, radio int. 16 and
21 em radio noise in R-8572; radio int. 7 in R-8568; spot groups
continue, radio int. 34, 21 em radio noise and 2 subflares in
R-8573; moderate green corona SW limb; minor events: Ha (R-8573)
1157 with em., m, and dm, solar bursts.

Geophysical: continued slight magnetic activity until 0600, quiet
thereafter; SID at 0044; homogeneous auroral band overhead at
$= 59° over U.S.S.R. 1600-1700.

Solar: spot gone, radio int. 8, 21 cm radio noise and 1 subflare
in R-8571; R-8563 over W limb; spots continue, radio int. 16 and
21 cm radio noise in R-8572; radio int. 7 in R-8568; spot groups
continue, radio int. 35, 21 em radio noise and 3 subflares in
R-8573; minor event: active dark filament (R-8571) 2236-0233.

Geophysical: continued magnetically quiet, 3 KpOt; ionospheric F
region relatively quiet.

Solar: no spot, radio int. 8, 21 cm radio noise and 5 subflares
in R-8571; spots continue, radio int. 20, 21 cm radio noise and
3 subflares in R-8572; radio int. 6 in R-8568; spot groups con-
tinue, radio int. 37, 21 cm radio noise and 15 subflares in
R-8573; minor events: active dark filament (R-8573) 1943-0640;
dark surge (R-8573) 2230.

Geophysical: quiet to very slight magnetic activity 0000-0600,
slight activity 0600-1500, very slight thereafter; SID at 2230.

Solar: no spot, radio int. 7 and 21 cm radio noise in R-8571;
spots continue, radio int. 20, 21 cm radio noise and 7 subflares
in R-8572; R-8568 goes off W limb; spot groups continue, radio
int. 41, 21 cm radio noise and 18 subflares in R-8573; radio int.
11 in R-8576; minor events: cm. and m. solar bursts 0230.

Geophysical: slight magnetic activity until 1200, quiet thereafter,
1 KpOt, 1 KpOo.

- 64 -



Oot. 15, 196700 uT O} o2 OOo
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One of ten sagnetically quiet days; tonoapherie F region relatively quiet.

148



1966 10 cm Sun-
June Flux spot
SS, No.

CUP of
Region
Number

Highlights

24
(Cont'd)

25 102* 105* 80

26 102* 106* 78

27° 98 #101 69

16

* corrected for burst

R-8350(2)
(N21)

R-8348
(S24)

Geophysical: magnetically quiet 0000-1500, disturbance
varying from slight to near severe 1500-2400; SEA and
SES at 1952; ionospheric F region slightly disturbed.

Solar: no spot mag. obs. Mt. Wilson; spots continue, radio
int. 17, 21 cm radio noise and 3 subflares in R-8344; spot
growing and 2 subflares in R~8345; spot continues, radio
int. 17, 21 cm radio noise and 3 subflares in R~8348;
spot, radio int. 11 and 1 subflare in R-8358; spot, radio
dnt. 19, moderate green corona and 5 subflares in R~8361;
minor events: Hy (R-8348) 1523 with cm. and m. solar
bursts; rapid disappearance of filament and dark surge;
(R~8361) 0912; m. solar noise storm; type II, 10-180 Miz,
1535-1547; type LV, <100->320 MHz, 1535-1620 and 22-41 MHz,
1607-1940; sudden disappearance of filament (R-8343) 1948;
active dark filament (R-8344) 2345.

Geophysical: moderate magnetic disturbance 0000-0300
followed by slight disturbance; SPA at 0634; S-SWF, SEA,
SPA, SES and SFD at 1528; ionospheric absorption on 30 Miz
at Great Whale River 0100-2100; weak display noctilucent
clouds over Western Europe in latitude 55° from 0140-0243;
ionospheric F region disturbed.

Solar: no spot mag. obs, Mt. Wilsons spote continue, radio
int. 22, 21 em radio noise and 3 subflares in R-8344; spot
continues to grow and 2 subflares in R-8345; spot continues,
radio int. 11 and 3 subflares in R-8348; spot continues,
radio int. 12 and 1 subflare in R-8358; spot continues,
radio int. 16 and 21 cm radio noise in R-8361; spot
appears in R-8359; minor events: Hy (R~8344) 0034 with
em. solar burst; (R-8345) 0030E; cm. burst at 1515.

Geophysical: magnetically quiet except slight disturbance
1500-1800; ionospheric F region disturbance dies away.

Solar: no spot mag. obs. Mt. Wilson; spot group continues,
radio int. 22, 21 cm radio noise and 5 subflares in
R-8344; spot size decreasing and 2 subflarea in R-8345;
spot continues, radio int. 9 and 1 subflare in R-8348;
small spot and radio int. 8 in R~8358; spot continues,
radio int. 14 and 21 cm radio noise in R-8361; spot con-
tdnues, radio int. 7 and 2 subflares in R~8359; major
event: Hy (R-8344) impt. 2n, 2355-0130 with m. solar
burst; minor events: Hy (R-8348) 0520E, (R-8344) 1423
with cm. solar burst; m. solar burst 1210; active dark
filament (R~8344) 1603.

Geophysical: continued magnetically quiet especially 0000-
0900 Kp0+; widespread and bright display noctilucent
clouds over Weatern Europe visible during the whole night
in latitudes 50° and 57°.

-.35 -



1966 10 cm Sun- Geo-
Nov. Flux spot mag.
SS, No. Ap

CMP of
Region
Number

Highlights

23° 118*115* 76 2

24 117 11472 6

S

25 114111 74

26 110 107 67 10

27° «114*1ll* 59 6

28 107 104 41 19

* adjusted for burst

R-8584
31)

R-B586 (2)
22)

Solar: spot continues, radio int. 33 in R-8578; spots continue,
radio int. 15 and 3 subflares in R-8584; small spot group con-
tinues, radio int. 6 and 1 subflare in R-8588; large spot group
continues, radio int. 32, 21 cm radio noise and 5 subflares in
R-8589; radio int. 14, 21 cm radio noise in R-8586; minor event:
active dark filament (R-8584) 0012E-0736.

Geophysical: continued magnetically extremely quiet; 1 Kp0o, 4
KpO+; ionospheric F region relatively quiet.

Solar: spot continues, radio int. 16 in R-8578; spots continue,
radio int. 16 in R-8584; large spot group continues, radio int.
30, 21 cm radio noise and 5 subflares in R-8589; spot appears,
radio int. 15, 21 cm radio noise and 1 subflare in R-8586; spot
group appears, radio int. 11 and 21 om radio noise in R-8593.

Geophysical: slight magnetic activity 0300-0900, quiet thereafter.

Solar: wtiew spot appears, radio int. 29 and 3 subflares in R-8578;
spots continue, radio int. 15 and 1 subflare in R-8584; large
spot group continues, radio int. 29, 21 cm radio noise and 8
subflares in R-8589; spot continues, radio int. 15 and 21 cm
radio noise in R-8586; spot group continues, radio int. 14 and
21 cm radio noise in R-8593; moderate green corona NE Limb;

Ho (R-8589) 2212; cm. and m. solar bursts 1500-

Geophysical: continued magnetically quiet, 1 KpO+, with preli-
minary sudden commencement at 1339; SID at 1523; ionospheric F
region relatively quiet.

Solar: new spot continues, radio int. 22 and 2 subflares in
R-8578, which goes off W limb; one spot remains, radio int. 15
and 3 subflares in R-8584; large spot group continues, radio
int. 22, 21 cm radio noise and 6 subflares in R-8589; spot con-
tinues, radio int. 14, 21 cm radio noise and 2 subflares in
R-8586; spot: group continues, radio int. 14, 21 cm radio noise
and 1 subflare in R-8593; br. green corona NE limb; minor events:
Ho (R-8589) 0920, 1229, both with cm. and m. solar bursts, and
1310 with m. solar burst and active prominence region.

Geophysical: slight-to-moderate magnetic activity 0000-0600,
then very slight activity until 1800, quiet thereafter, 1 KpOt;
SD at 0001.

Solar: spot continues, radio int. 26 and 1 subflare in R-85845
large spot continues, radio int. 19, 21 cm radio noise and 3
subflares in R-8589; new spot group appears, radio int. 25, 21
om radio noise and 6 subflares in R-8586; spot group continues,
radio int. 12 and 21 cm radio noise in R-8593; minor event:

He (R-8586) 1055.

Geophysical: continued magnetically quiet, 1 KpO+, until 1500,
very slight activity until 2100, quiet thereafter; SID at 2149;
ionospheric F region relatively quiet.

Solar: spot continues, radio int. 16, 21 cm radio noise and 2
subflares in R-8584; 2 subflares in R-8589 at W limb, spot
groups continue, radio int, 15, 21 cm radio noise and 4 sub-
flares in R-8586; spot group decreases in size, radio int. 11,

21 cm radio noise and 2 subflares in R-8593; minor event:
Ha (R-8586) 0823E with cm. solar burst.

Geophysical: very slight magnetic activity until 0900, slight-
to-moderate 0900-1800, moderate storm beginning 1800; 30 MHz
ionospheric absorption at Great Whale River 2313 to Nov. 29 at
2130; auroral display over Western Europe mainly concealed by
cloud visible to ¢ = 58°; ionospheric F region slightly disturbed
in some sectors with some auroral blackout at high latitudes.

- 67 -



Day 10 em Sun- Geo- Iono- CMP of Highlights
Flux spot mag. Index Region
S No. Ap Ip Ia Number
1967 May
01134 «81 14 0 0 R-8796 Solar: visual spot group gone but radio int. 14 and 1 subflare in
qi4) R-8785; spot group decreases in size with radio int. 13 and 4 sub-
flares in R-8788; spot group continues with radio int. 32 and 3
subflares in R-8796; spot group classified By increasing in size
with radio int. 30 and 4 subflares in R-8791; spot group continues
with radio int. 16 and 2 subflares in R-8798; br. green corona on
NE limb.
Geophysical: very slight magnetic activity, becoming moderate with
sc at 1906; cosmic ray Forbush decrease begins late in the day,
reaching maximum May 2.
Events: minor: Ho (R-8791) 0517, 0746, 1101 and 1343 with cm solar
burst; Ho (R-8796) 0740; Ha (R-8795) 1024; Ha (R-8798) 1352 and
1613; SID at 0310 with cm solar burst.

02130 79 25 5 3 R-8797(5) Solar: radio int. 9 and 6 subflares in R-8785; spot group continues
(437) with radio int, 18 and 5 subflares in R-8788; spot group continues
with radio int. 22 and 2 subflares in R-8796; spot group continues
with radio int. 30 and 5 subflares in R-8791; spot continues with
radio int. 16 and 1 subflare in R-8798; small spot with radio int.
12 in R-8795.

Geophysical: some slight magnetic activity early in the day, though
moderate storm occurring 0900-1200, and moderate activity increasing
after 1500; Forbush decrease reaches maximum, begins gradual recov-
ery until. recovered May 3; moderately bright rayed arc or band over
Western Europe and Atlantic; base overhead at $ = 65°, 2350-0200,
becoming for a period between 2350-0050 two close rayed bands, rays
visible to ¢ = 56°; ionospheric F region disturbed.

Events: minor: Ho (R-8791) 0840; Ha (R-8798) 1418.

03 Burst 62 87 2 5 R-8791(3) Solar: radio int. 8 in R-8785 at W limb; spot group continues with
(820) radio int. 14 and 3 subflares in R-8788; spot group continues with
radio int. 16 and 4 subflares in R-8796; spot size decreasing with
radio int. 28 and 14 subflares in R-8791; spot size increasing with
radio int. 16 and 2 subflares in R-8798; small spot continues with
radio int. 14 in R-8795.
Geophysical: great magnetic activity continues with moderately severe
storm occurring until 1800, 2 Kp 7o, 2 Kp 7~, decreasing activity
late in the day; cosmic ray decrease recovers then drops again
slightly, reaching maximum May 4; glow on northern horizon visible
to § = 59° night of May 3/4 in Western Europe; aurora over Alaska
= 59° 0600-1100 and over North America: $ = 57° 0000-0500 and
$ = 58° 0600-1100; ionospheric F region very disturbed with wide-
spread auroral blackout at high latitudes.
Events: major: Ho (R-8798) impt. 2b 1537-1926 with cm, m, and dm
solar burst and SDF; Ho (R~8796) impt. 2b 1542-1707 with cm, m, and
dm solar burst; minor: Ho (R-8791) 0938; Ha (R-8798) 1140; Ha (R-
8795) 1411; ADF (R-8792) 1240; BSL (N27 E limb); EPL (N17 E limb) 2315.

04124 «462 12 0 4 Solar: spot group goes over W limb with radio int. 12 and 3 subflares
in R-8788; spot group continues with radio int. 18 and 6 subflares
in R-8796; spot continues to decrease with radio int, 28 and 7 sub-
flares in R-8791; spot size increasing with radio int. 24 in R-8798;
small spot continues with radio int. 14 in R-8795; mod. green corona
SW and NW limbs.

- 104 -



Section Ionosphere and Radio Astronomy of the Netherlands PTT,
Physics Laboratory of the University of Amsterdam. Monthly.

Data for June 1968, received WDC~A November 1968.

12.  "Lonospheric Data Part 1", Radio Propagation Unit, National
Physical Laboratory, Delhi-12, India. Monthly.

First issue January 1955; first issue as Part 1
January 1966; RRC-A1l41, data for February 1967,
received WDC-A October 1968.

13. "Solar and Geophysical Data Part 2", Radio Propagation Unit, National
Physical Laboratory, Delhi-12, India. Monthly.

First issue as Part 2 January 1966; data for April 1968,
issued May 1968, received WDC-A October 1968.

Sunspot numbers, solar radio noise, solar flares, sfe's,
magnetic storms, sudden ionospheric disturbances.

Quarterly

1. "Geophysics and Space Data Bulletin", edited A. L. Carrigan and
N. J. Oliver, Air Force Cambridge Research Laboratories, L. G.
Hanscom Field, Mass. Quarterly.

Vol. I, No. 1, data for January-March 1964, issued July 1964.
Vol. V, No. 2, data for April-June 1968, issued October 1968.

Geomagnetic, cosmic ray, riometer, solar and ionospheric
data,

2. "Kiruna Geophysical Data", edited by G. Gustafson, L. Liszka,
Kiruna Geophysical Observatory, Kiruna C., Sweden. Quarterly.

66/4, data for October-December 1966, received WDC-A
May 1968.

Geomagnetic K-indices, ionospheric absorption, visible
aurora index, earth currents, magnetic pulsations.

Supplements irregularly such as "PCA Events",
"Q indices", etc.

3. "High Latitude Geophysical Data", edited by M. J. Young, Geophysical
Institute, University of Alaska, College, Alaska. Quarterly
(formerly monthly). Publication suspended with April-June 1968 data.

Data for July 1959 in UAG-Cl, issued December 1962
Data for April-June 1968 in UAG-C52, issued June 1968,
received WDC-A September 1968.

30 MHz cosmic noise records, 68 MHz radio star
scintillation, N-S telluric current records,
magnetic micropulsation activity, geomagnetic
activity.

- 167 -



Juty 20, 1967 00 UT OL O2

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10/05 —— 10/95

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Joly 23, 1967 Our OO

6 6 @ 15

‘one of Five magnetically quiet days; fonospheric F region relatively quite.

CINCO Oe

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CJ @ is

One of five aout mognetically disturbed day

126 -



1966
Aug.

10 cm
Flux

S_Sa

CMP of
Region
Number

Highlights

10

iL

12

13

4

15

94 96

92 94

90 92

90 93

91 93

90 93

91 94

Sun- Geo-
spot mag.
No. Ap
7 9
Oo 12
16 0 «14
360 («14
30 6
37 9
4L 5

R-8429
(824)

R~B435
28)

Solar: radio int. 22 and 1 subflare in R-8415; 2 subflares
in R~8422; radio int. 12 in R-8435; br. green corona at NW
limb and moderate green corona at NE limb; minor events:
active prominence region (N22 27 W limb) 0805 and 0600-1600;
active prominence region (N55 E limb) 0749.

Geophysical: magnetically quiet except slight activity after
1800.

Solar: radio int. 12, 2 subflares in R-8422; radio int. 12
in R-8435; br. green corona at NW limb; moderate green
and red coronae at NE limb; minor events: br. surge (N24
W limb) 1142.

Geophysical: slight-to-moderate magnetic activity; iono~
spheric F region slightly disturbed.

Solar: small spot group appears, radio int. 8, 21 cm radio
noise, and 2 subflares in R-8435; radio int. 8 on W limb
in R-8422; moderate green corona NW limb; small spot ap-
pears, radio int. 20 in R-8438; minor event: Hy (R-8435)
0603; active dark filament (N32 W24) 0844; active filament
(N33 W limb) 0849.

Geophysical: slight-to~moderate magnetic activity continues;
fonospheric F region slightly disturbed.

Solar: spot group increases in size, radio int. 10, 21 cm
radio noise, and 3 subflares in R-8435; small spot con-
tinues, radio int. 17, 21 cm radio noise in R-8438; minor
events: dark surge (N32 W37) 0923; active prominence re-
gion (N32 W limb) 0802; active filament region (N30 E05)
0802; eruptive prominence at limb (N57 E limb) 1630.

Geophysical: slight-to-moderate magnetic activity continues;
fonospheric F region disturbed; at 0000-1100 aurora over~
head at ¢ = 60° over North America.

Solar: spot group continues, radio int. 12, 21 em radio
noise, and 4 subflares in R-8435; small spot continues,
radio int. 13, 21 em radio noise in R-8438; small spot
appears, 1 subflare in R-8429; minor events: active promi-
nence region (N25 36 W limb) 0700 and (N21 W limb) 1057;
eruptive prominence at limb (N32 W limb) 1307; active
filament region (N30 E06) 0842; dark surge (N35 E23) 0852
and 1034,

Geophysical: magnetically quiet after slight activity 0000-
0600.

Solar: spot group continues, radio int. 12, 21 em radio
noise in R-8435; no spot, radio int. 14, 21 cm radio noise
in R-8438; small spot continues, 2 subflares in R~8429;
small spot appears, 5 subflares in R-8441; minor events:
Hy (R-8435) 0800 and 0906, (R-8441) 0906, cm., m., and
dm. solar bursts 1020-1230; br. surge on limb (N38 E limb)
1057; active prominence region (N36 W limb) 0547.

Geophysical: slight magnetic activity 0000-0900, quiet
thereafter; ionospheric F region slightly disturbed.

Solar: spot group continues, radio int. 12, 21 em radio
noise in R-8435; no spot, radio int. 12, 21 em radio noise,
and 1 subflare in R-8438; small spot group continues,
radio int. 7, and 1 subflare in R-8429; small spot conti-
nues; 1 subflare in R-8441; small spot appears, radio int.
6; 1 subflare in R-8440.

Geophysical: continued magnetically quiet; SCNA and SEA at
1112; at 0000-0500 aurora overhead at 6 = 58° over North
America; br. display of noctilucent clouds seen at $ = 60°
over Western Europe at 0150-0230.

- 45 -

a



Day 10 cm Sun- Geo~ Iono- CMP of Highlights
Flux spot mag. Index Region
S No. Ap Ip Za Number
1967 February
19 124 S7 5 (0) 0 R+8693(2) Solar: radio int. 12 as R-8687 goes over W limb; small spot with

(N19) radio int. 12 in R-8688; small spot continues with 1 subflare
R-8694(3) in R-8691; spot groups continue with radio int. 22 and 4 sub-
(823) flares in R-8695; spot continues, radio int. 12 and 4 subflares

in R-8694; spot continues, radio int. 17 in R-8698; spot appears,
radio int. 12 and 1 subflare in R-8693.

Geophysical: continued magnetically extremely quiet until 0600,
increasing to very slight activity thereafter; gradual cosmic
ray recovery continues; ionospheric F region relatively quiet.

Events: none.

20132 60 45 00 Solar: spot gone in R-8688; small spot gone in R-8691; spots

continue with radio int. 18 and 7 subflares in R-8695; spot
continues, radio int. 7 in R-8694; spot continues, radio int.
14 in R-8698; spot continues, radio int, 8 in R-8693; no spot,
radio int. 9 in R-8703; no spot, radio int. 19 and 5 subflares
in R-8704; br. green corona SE and NW limbs; mod. green corona
NE and SW limbs.

Geophysical: continued very slight magnetic activity; cosmic ray
intensity near normal by end of day.

Events: minor: Ha (R-8695) 0725 with m solar burst; (R-8703) 2224
with SID and DSD;(R-8704) 2321; Dkm, m, dm and cm solar burst at
0925; APR (R-8704) 1145-1336; solar x-rays 1350; ADF (R-8695)
2051-0815.

21:135* 71 6 O 1  R-8695(4) Solar: spot groups continue with radio int. 16 and 5 subflares
(nis) in R-8695; spot continues, radio int. 6 in R-8694; spot conti~
nues, radio int. 15 in R-8698; spot continues, radio int. 10
and 4 subflares in R-8693; no spot, radio int. 10 in R-8703;
no spot, radio int. 28 and 13 subflares in R-8704; mod. green
corona NE, SE and NW limbs.
Geophysical: magnetically quiet until 0900, very slight activity
thereafter.
Events: minor: Ho (R-8704) 0229 with ADF and DSD, 0447, 0628 with
ADF, 1603 with SID and m and dm solar burst; 2037 with SID and
dm and cm solar burst; SIDs at 1621 with m and Dkm type II, 1951
and 2003; Dkm, m and dm solar burst at 1005 and 1320; BSLs
(R-8704) 1411-2207 DSD (R-8704) 2149; solar x-rays 0706 and 1700.

22 149 86 7 0 0 R-8698(4) Solar: spot groups continue with radio int. 15 and 2 subflares

@i26) in R-8695; spot continues in R-8694; second spot appears, then
(R-8700a) disappears in R-8694; spot continues, radio int. 19 and 1 sub-
(24) flare in R-8698; spot continues, radio int. 12 and 4 subflares

in R-8693; spot appears, radio int. 11 and 2 subflares in
R-8703; large spot group appears, radio int. 66 and 11 subflares
in R-8704; mod. green corona NE and NW limbs.

Geophysical: continued very slight magnetic activity.

Events: major: Ha (R~8704) impt. 2b 0622-0635 with SID, cm solar
burst, solar x-rays and DSD, 0802-0838 with m and cm solar
bursts, 1739-2039 with SID, m type II and m, dm and cm solar
burst, impt. 2n 0917-1023 with Dkm and cm solar bursts and
EPL and BSL, 1410-1539 with cm solar burst, solar x-rays, m and
Dkm type II and Dkm type IV; minor: Ha (R-8704) 0505 with SID
and m, dm and cm solar burst and solar x-rays, 0858, 1232, 2310;
(R-8693) 0755; (R-8698) 1440 with SID, solar x-rays and cm solar
burst; SIDs at 0120 with m and cm solar burst and solar x-rays,
0349 with cm solar burst and solar x-rays, 1147 with cm solar
burst, 1325 with Dkm, dm and cm solar burst, 1617, 1716, 1842,
1928 and 2211; solar x-rays 1043 and 1656.

* adjusted for burst
() estimated from less than 24 hours data



1966 10 cm
Jen. Flux

s

Sa

Sun-
spot mag.
No.

Geo-

Ap

CMP of
Region
Number

Highlights

23

24

25

26

27

28

29

94

92

88

85

82

80

81

91

89

85

83

80

78

78

38

Al

27

19

16

14

19

4

4

7

R-8139
(823)

(R-8152)
(825)

R-8148 (2)
(s29)

Solar: small spot persists in R-8130; spot group continues
decrease, 21 cm radio noise, radio int. 15 and 2 subflares in
R-8131; small spot persists, 21 cm radio noise and radio int.
8 in R-8133; spot growing, radio int. 10 and 3 subflares in
R-8139; minor event: Ha (R-8139) 1026E.

Geophysical: slight magnetic disturbance continues; ionospheric
absorption on 30 MAz at Great Whale River 0016-2345; Lono-
spheric F region slightly disturbed with some auroral black~
out at high latitudes; cosmic ray decrease recovery during
day.

Solar: spot gone in R~8130; spot group persists, 21 cm radio
noise and 4 subflares in R-8131; spot persists, 21 cm noise
and 6 subflares in R-8133; spot group growing and 5 subflares
in R-8139; weak green corona observed on NW limb; no obser-
vations for radio int; minor events: Ha (R-8133) 2130; dark
surge (R-8133) 2136,

Geophysical: slight magnetic disturbance continues; ionospheric
F region slightly disturbed.

Solar: small spot persists, radio int. 12 and a subflare in
R-8131; spot gone in R-8133; spot group continues to grow,
radio int. 13 and 4 subflares in R-8139; weak green corona
on NW limb.

Geophysical: slight magnetic disturbance continues; ionospheric
F region slightly disturbed in some sectors.

Solar: no spot but radio int. 10 where R-8131 over W Limb; 1
subflare in R-8133; spot group decreasing, radio int. 10 and
3 subflares in R-8139; moderately bright green corona on NW
limb; minor event: dark surges (R-8139) 0027, 0123 and 0204.

Geophysical: slight magnetic disturbance continues; G-SWF at
0122; ionospheric absorption on 30 MHz at Great Whale River
0332-2313; ionospheric F region slightly disturbed in some
sectors with some auroral blackout.

Soler: 4 subflares in R-8133; spot group persists and radio int.
10 in R-8139; moderately bright green corona on NW limb.

Geophysical: slight magnetic disturbance ends becoming extremely
quiet, all Kp Oo after 0900.

Solar: spot group persists and a subflare in R-8139; weak green
corona in R-8154 off E limb; moderate green corona on NW
limb; minor events: Ba (R-8133) 0815, (R-8154) 1755; at 1415
and 606 Miz, burst, 1642; br. surges (R-8133) 0805, (R-8154)
1650.

Geophysical: continued magnetically quiet except 2100-2400 Kp
ho.

Solar: 2 subflares in R-8133 at W limb; spot group persists,
radio int, 11 and 2 subflares in R-8139; small spot and 5
subflares in R-8152 new on disk; moderate green corona in
R-8154; minor events: Hy (R-8133) 1430 and 1501, (R-8139)
1752; at 8800, 2800, 1415 and 606 Mz, burst, 1800; eruptive
prominence (R-8133) 1513.

Geophysical: continued magnetically quiet.



INTRODUCTION

This report consolidates the Abbreviated Calendar Records which have
been published under the auspices of the International Ursigram and
World Days Service in IQSY Notes Nos. 17, 18, 20 and 21 for the data
of January through December 1966, and published in STP Notes Nos. 1,

2 and 3 for the data of January through December 1967. It is felt
that because of the limited distribution and availability of these two
publications that republication in this Upper Atmosphere Geophysics
Report will make the data more readily available to the scientific
research worker.

These Abbreviated Calendar Records are chronological summary accounts
of solar and geophysical activity and events. The record is intended
to give a convenient summary of daily solar-geophysical events for
quick interpretation of results of research programs such as those
being sponsored by the Inter-Union Commission on Solar-Terrestrial
Physics. The compilation of the data is done on a rather prompt sched-
ule. Thus it is based in part on some provisional data reports, avail-
able at World Data Center A - Upper Atmosphere Geophysics as well as on
final data reports. Therefore, the Calendar Record should not be relied
upon for details of solar and geophysical events, but rather it should
be used as a guide to the definitive results presented in the several
standard data publications. Many of these are listed in the Appendix
to this report.

The format of the Calendar Record is described below. It should be
noted that there was a major change in the style of presentation begin-
ning with the July 1967 data.

EXPLANATIONS FOR JANUARY 1966 - JUNE 1967
Column 1 - Date. The period covered is 0000 to 2400 UT (Universal Time).

Column 2 - 10cm flux. The solar radio noise at 2800 MHz, observed at
Algonquin Radio Observatory (National Research Council, Canada) at about
1700 daily, is expressed in units of 10-22wm-2Hz-l. § is the observed
flux, which should be used for most solar-terrestrial studies. The
values Sa have been adjusted for the varying Sun-Earth distance during
the course of the year; Sa = S/r2, where r is expressed in Astronomical
Units, and are appropriate as a measure of solar activity itself. Begin-
ning January 1967 only the S values are given.



oct. 25, 196700 ur Ob SOS Sg ket

FLARES

= = 2 oF = Fe E O]1p
pe [Ke E Es 1 r O}10

3 [se
0 8 6 8 te 5 8 a
146 10 em flux one of five magnetically quiet days; fonospheric F region relatively quiet.

1g Re
cue (9080) W368

oct. 261967 WUT) St kt

FLARES

cm
de
a
Dim
Sib n rn

Rays n
Be Kp. os is cs
a[ose

Bursts

STip
O}ta
0 8 05 o 2 5 e a ]

150 10 cm fLux One of five magnetically quict days; tonospheric F region relatively quiet.
125 Be
‘GHP 9037 NL7(2) 16535 N20 (BEDS

(16532) N21 @)1
16533423 (ap)4

oct. 27, 196700 url 02} Ok OSB a Stt ae

FLARES

cm L n n n L L n

SI} tp
26 [se fio
B i 09 ir 5 8 a

163 10 cm flux Aurora overhead in USSR at ¢ © 59° 1300-1600, at ¢ = 61° at 1700; gradual decrease in cosmic rays begins;

125 Re Sonospheric F region disturbed in sone sectors.
uP 9038 8234)

oct. 28, 1967 Our Ol 2304S BS q

FLARES 10/36
An 1/45, = 10/36 q

Bp [Kp = Be = = a = rs ‘alte
23 [se Tara 2|t0
0 i 6 (7 2 5 iy j a

179 10 em flux One of five nost magnetically disturbed daya; aurora overhead in USSR at $= 61" 0900-1000 and 1700-1800, at
156 Re $= 58° 1000-2500; homogencous are visible over W. Europe at $ = 58° 2050-2300; fonospheric F region very
Ge (9052) $20 dssturbed; gradual decrease in cosnie rays continues.
9061 B1B(2) (26546) N20 (Bp)2
16534 M2 Cap)4
16537 M19 (BE)2

oct, 29, 1967 0) UT OL 02 OB ok oS ot

FLARES
n/t apna 4
cm co

Bp |_Kp. 38 Se = 7 3 ae Tip
2s [se 3}to
8 (J [J id 5 ig a 4

266 10 em flux One of five nost magnetically disturbed days; aurora overhead in USSR at = 49° 1400-1600, at ¢ = 51° 1600-1700,
137 Re gradual decrease in cosmic rays continues until additional sudden decrease of about 5% late in day folloved by
cap 9042 518(2) Steady gradual recovery to normel on or about Novenber 8; ionospheric F region very disturbed.

9050 BKC)
150



1966 10 cm Sun- Geo-
July Flux spot mag.
S Sq No. Ap

CHP of
Region
Number

Highlights

25 122 126 67) 4

26: 124 128 74 6

27 120 124 520 «11

28 120 124 61 10

R-8408
37)

R-8405 (2)
(N22)

Solar: radio int. 14 and 21 cm radio noise in R-8397; spot
gone, radio int. 8 in R-8401; small spot with radio int. 7
and 1 subflare in R-8404; spot continues, radio int. 51,

21 cm radio noise and 4 subflares in R-8405; spot continues

to grow, radio int. 33, 21 cm radio noise and 8 subflares

in R-8408; spot continues, radio int. 17, 21 cm radio noise
and 2 subflares in R-8413; radio int. 29 and 1 subflare in
R-8414 at E limb; moderate green corona on NE limb; minor
events: Hy (R-8408) 0455 with cm. and m. solar bursts, and
1302; cm. solar burst 0815, 1145, 1525-1640, and 1955; m. solar
burst 1335.

Geophysical: continued magnetically quiet; S-SWF, SCNA and
SPA at 0455; SL-SWF, SPA, SES and SFD at 1528; ionospheric F
region relatively quiet; moderate display noctilucent clouds
seen over the Atlantic and Western Europe at latitudes
52.5° to 60° from 2300 to 0150.

Solar: radio int. 10 and 21 cm radio noise in R-8397; radio
int. 9 in R-8401; small spot gone in R-8404; spot continues,
radio int. 46, 21 cm radio noise in R-8405; spot continues,
radio int. 26, 21 cm radio noise and 8 subflares in R-8408;
spot continues, radio int. 18, 21 cm radio noise and 1 sub-
flare in R-8413; spot, radio int. 41 and 2 subflares in
R-8414; moderate green corona on NW limb; minor events:

He (R-8408) 0000E with cm. solar burst and dark surge,
(R-8413) 0321 with active filament region, and 0623E with
om. and m. solar bursts, (R-8414) 0837E with active promi-
nence region, and 1155 with em. and m. solar bursts, and br.
surge; cm., m., and dm. solar bursts 0715-0850, 0925; cm.
solar bursts 1040, 1235 and 1430; dark surges (N30 E50)
0648 and 0748.

Geophysical: continued magnetically quiet, very slight acti-
vity 1500-2400; SPA at 1159; SL-SWF, SPA and SES at 1443;
SEA at 1844.

Solar; radio int. 7 in R-8401; spot continues, radio int. 44,
and 1 subflare in R-8405; spot size decreasing, radio int.
14 and 2 subflares in R-8408; spot continues, radio int. 18,
21 cm radio noise and 3 subflares in R-8413; spot continues,
radio int. 50, 21 cm radio noise and 7 subflares in R-8414;
7 subflares in R-8415 at E limb; minor events: Hy (R-8415)
0043 and 0902E with active prominence region, (R-8414) 2012
with cm. solar burst and 2329; cm., m., and dm. solar bursts
1030; cm. solar burst 0930-0940.

Geophysical: magnetically quiet until preliminary sudden com-
mencement at 0603, slight to moderate activity through 1800;
noctilucent clouds seen over the Atlantic at 56.5° at 0300.

Solar: spot continues, radio int. 37, 21 cm radid noise and
1 subflare in R-8405; spot size still decreasing, radio int.
8 and 3 subflares in R-8408; spot continues, radio int. 14,
and 21 cm radio noise in R-8413; spot size increases, radio
int. 59, 21 cm radio noise and 11 subflares in R-8414; 6 sub-
flares in R-8415; moderate green corona on NW limb; major event:
Hy (R-8413) impt. 2b, 2213-0150 with cm. and m. solar bursts;
type I 2330-0048, 19-41 Miz; minor events: Ha (R-8414) 0637,
2110 and 2310E, (R-8415) 1047E; cm., m., and dm. solar bursts
0805-0850 and 0935-1025; type II, 2238-2351, 20-29 mlz; active
filament region (R-8413) 0354.

Geophysical: slight activity until 0900, very slight activity
0900-2400; SEA at 1857; SCNA at 1923; SFD at 2214; SPA and SES
at 2223; SPA at 2250; ionospheric F region slightly disturbed.

- 42-



pec. 17, 1967 vr 02 ORS Ce
Os
FLARES bates nin/i
tots =1Ens an/is
> em a i n im
3 (am
§ lcm T (E
© [Km ee
S10. i i i
X-Rays i n 1 T
7p |__Ke = 3s = ie 3 26 ro a stp
u_ [se P}I0
03 i ca 2 5 ie a a
209 10 em Flux Tonosphorte F region slightly disturbed; small proton increase on >10, 30 and 60 Mev counters on Explorer 34
172 te coneinuca with seconé peak about 2100,
HP OILS M1a¢e) 16807 MAB C6)
Dec. 18, 1967 0 ur OL 02 HOS Ot Bow be OM a oe
FLARES ——In/15. —in/l3 — n/1s
— i <in/is ——— 8
> ee i L i i
3 [Cam 1
5 [om 1
© [bien
SID. T i i
X-Rays
Bp [Ke = rs is = ry i ed Ezy rat
as [Tse T bssaapy Kimady raed
0 cH as ® i 5 i Ea a
219 10 ex fiux Aurora overhead over USSR at $ = S8* 1400-1500 and ac @ = 57* 1600-1700; Lonoapherte F region slightly
170 Re disturbed.
bec. 19, 1967 UT 02H Ott ae 34
FLARES
iy
> Len
3 [Cam
5 [om
© [kee
S10 i
X-Roys
Bp [Kp es re Ps = re = se = tp
3o [se + [Tio
05 [J ca 2 15 cy ai a
212 10 em flux one of five most magnetically disturbed days; rayed auroral arc overhead over W. Europe at # * 66° ond
129 Re Wlatble to 9» 56" 2130-2230; aurora overhead over USSR at = 55° 1400-1900 and at $ ~ 58° 2000-2100;
Aenozpherte F region slightly disturbed with cone auroral blackout.
dec. 20, 1967 OD ur Ol OO} Od SOT te st an Be
FLARES
ina? — 1/27,
> Le i i i n ti i I
= [am Ci oo n
3 a n ot L
© [dem ia 16S ie
S10. it T I ct i
Rays
‘Ap [_Ko. ry 3 = = a = = alte
yz [se s|t0
a a ae 9 @ 5 ie a Fa
208-10 on Aux Gone of ve moat nugneticalty dlocurbed days} aurors overhead over USSR at 9 = 38° 1600-2200 and at @ = 57°
s lowest intensity on the long duration cosmic ray dectease; ionospheric F region discurbed vith aurora!
ow (26609) 120 (ap) blackout. * ” ‘Bherke F region disturbed with a
(26623) ea
(26631) $22 BE)3
Bec. 22, 1967 Our O02 OF OOS Ott tet ae a
FLARES
— wns
» i i
& [Cen i
§ [om —S eee
© Token
S10 i
X-Roys
%p [Kp i = = ie ie rey = z a] ip
ze [sc TE o04516) s|lo
6 () 2 5 18 a

205 10 cm Flux
130 Re
cap 9121 s10
16610 N23 BE
16620 122 BE

Auroral Light visible through clouds over W. Europe at ¢ = 59° 1715-2310; Lonospherfe F region alightly disturbed,

161



1966 10 cm Sun- Geo-
Dec. Flux spot mag.
S Sq No. Ap

CUP of
Region
Nunber

Highlights

23° 114*111* 38 8

24 114110 45 12

25 115 112 60 14

26 115 111 65 24

27 113 110 48 34

* adjusted for burst

R-8626
28)

R-8620
(30)

R-8621
26)

Solar: radio int. 10 in R-8612 at W limb; small spot group con-
tinues and radio int. 6 in R-8620; small spot group in R-8621;
another spot group appears, radio int. 20, and 21 cm radio noise
and 4 subflares in R-8624; spot group continues, radio int. 20;
21 cm radio noise and 7 subflares in R-8625; 1 subflare in R-8619
minor events: Hx (R-8625) 0752 with cm., m. and dm. solar bursts,
1019, 1046, 1210, 1334 with cm. solar burst, br. surge and active
prominence region, 1506 with cm. and m. solar burst, 1639 with cm.
solar burst and br. surge, 1850 and 1925, (R-8620) 0815, (R-8624)
1110; cm. solar burst 1110 and cm. and m. solar bursts 1310; br.
surge (R-8625) 0248.

Geophysical: magnetically quiet until 1500, slight activity there-
after; SID at 0229, 0754, 1114, 1305, 1505, 1639, 1959 and 2211;
30 MHz ionospheric absorption at Great Whale River recovers.

Solar: spot group continues with radio int. 6 in 8620; small spot
group disappears in R-8621; spot groups continue, radio int. 22,
21 cm radio noise and 1 subflare in R-8624; spot group continues,
radio int. 18, 21 em radio noise and 10 subflares in R-8625; spot
group appears with radio int. 7 in R-8626; 1 subflare in R-8619;
an events: Hy (R-8625) 0444 with om. solar burst; cm. and m.
solar bursts 1020-1310 and em. solar bursts 1445-1530.

Geophysical: slight magnetic activity until 1200, quiet thereafter;
STD at 0345, 0435 and 1445.

Solar: spot group continues with radio int. 6 and 1 subflare in
R-8620; spot groups continue, radio int. 25, 21 cm radio noise
and 3 subflares in R-8624; spot group decreasing in size, radio
int. 11, 21 em radio noise and 4 subflares in R-8625; spot group
increasing in size with radio int. 8 in R-8626; major events:
Ho (R-8625) impt. 2£ 1105E-1140D with m. solar burst; minor events:
Ho (R-8625) 0205 with cm. solar burst and 0937 with m. solar
burst; (R-8624) 0910E with m. solar burst; cm. and m. solar
bursts 0920-1240.

Geophysical: slight magnetic activity; SID at 2339; ionospheric
F region slightly disturbed in some sectors with some auroral
absorption at high latitudes.

Solar: small spot continues with radio int. 6 in R-8620; spot
groups continue, radio int. 19, 21 cm radio noise and 3 sub-
flares in R-8624; spot group continues decreasing, radio int.
12, 21 cm radio noise and 3 subflares in R-8625; spot continues
increase, radio int. 12 and 1 subflare in R-8626.

Geophysical: moderate magnetic activity with moderate storm be-
ginning 1500; 30 MHz ionospheric absorption at Great Whale River
0549-1547D; homogeneous auroral arc overhead at ¢ = 58° over
U.S.S.R, 1700-1800; ionospheric F region slightly disturbed with
some auroral absorption at high latitudes.

Solar: small spot continues with radio int. 7 and 1 subflare in
R-8620; spot groups continue, radio int. 19, 21 cm radio noise
and 4 subflares in R-8624; spot group continues, radio int. 10,
21 cm radio noise and 1 subflare in R-8625; spot group continues,
radio int. 9 and 1 subflare in R-8626; radio int. 9 and 21 cm
radio noise in R-8628; minor events: Ho (R-8625) 1006 with cm.
solar burst and dark surge; active prominence region (N42 W limb)
0415-0825.

Geophysical: moderate magnetic storm until 1500, moderate activity
thereafter; 30 Milz ionospheric absorption at Great Whale River
0058-1408D; ionospheric F region disturbed with auroral absorp-
tion at high latitudes.



Day 10 cm Sun- Geo- Iono- CMP of
Flux spot mag- Index Region

S___No.

Ap Ip Ia Number

Highlights

1967 January
30
(Cont'd)

31161 108

1967 February

01 156 93
02 148 88
03 143 92

2 (0) 0 R-8670
(N21)

2 2 0 R-8671(7)
(N16)

corona NE and NW limbs; mod. green corona SE and SW limbs.

Geophysical: continued magnetically quiet; ionospheric PCA event
dies out.

Events: minor: Ho (R-8673) 1120 with m and cm solar burst; Dkm,
nm, dm and cm solar burst at 0925; SID at 1410 with dm and om
solar burst; SID at 2120; ADF (S50 £02) 0514-0803; BSL (R-8680)
0745E.

Solar: spot group decreases in size, radio int, 21 and 2 sub-
flares in R-8659 as region goes over W limb; spot decreases
in size, radio int. 22 and 5 subflares in R-8667; spot group
continues, radio int. 24 and 9 subflares in R-8670; spot group
appears, radio int. 21 in R-8674; spot group continues, radio
int. 12 and 3 subflares in R-8671; spot continues, radio int.
9 and 1 subflare in R-8673; spot continues, radio int. 20 and
5 subflares in R-8680; large spot appears, radio int. 8 in
R-8681.

Geophysical: magnetically extremely quiet 1 Kp0o, 3 Kp0+.

Events: major: Ha (R-8680) impt. 2£ 0204-0222
(R-8663) 0850 with Dkm, m, dm and cm solar burst and ‘and 1208;
(R8680) 0924 with Dkm and m solar burst; (R-8659) 1833 with
cm solar burst, SID and BSL; Dkm, m, dm and cm solar burst at
1030; SID at 0016; Dkm and m type II at 0022; ADF (S55 WO5)
1409-0000; APR (R-8659) 0605E and 0803-1600.

Solar: spot continues, radio int. 19 and 6 subflares in R-8667;
spot group continues, radio int. 14 and 1 subflare in R-8670;
spot group continues, radio int. 15 in R-8674; spot group con-
tinues, radio int. 12 and 2 subflares in R-8671; spot continues,
radio int. 21 and 2 subflares in R-8680; large spot continues,
radio int. 9 in R-8681; spot continues, radio int. 10 and 1 sub-
flare in R-8673; no spot, radio int. 15 in R-8682; br. green
corona NE and NW limbs.

Geophysical: very slight magnetic activity, becoming quiet after
1800.

Events: minor: Ha (R-8680) 0446; SID with Dkm, m, dm and cm
solar burst and solar x-rays at 1220: SID with m, dm and cm
burst and solar x-rays at 2300; SID at 0809; APRs (R-8669)
0003-0547 and 0830-1600; BSLs (R-8669) 0420 and 1143, (R-8682)
0907.

Solar: spot increases in size, radio int. 14 and 5 subflares in
R-8667; spot decreases, radio int. 9 in R-8670; spot group con-
tinues, radio int. 15 in R-8674; spot group increases in size,
radio int. 8 in R-8671; spot size decreases, radio int. 21 and
4 subflares in R-8680; large spot increases in size, radio int.
9 and 2 subflares in R-8681; spot continues, radio int. 9 and 2
subflares in R-8673; large spot appears, radio int. 20 and 1
subflare in R-8682.

Geophysical: continued magnetically quiet.

Events: minor: SID at 0144 with dm and cm, also m type II solar
bursts; APR (R-8669) 0000-0615; Dkm and m type II at 1838.

2 5 O R+8673(3) Solar: spot continues, radio int. 12 and 3 subflares in R-8667;

(824)

spot continues, radio int. 11 in R-8670; spot continues, radio
int. 11 in R-8674; spot group continues, radio int, 8 in R-8671;
spot continues, radio int. 19 and 2 subflares in R-8680; large

() estimated from less than 24 hours data

- 82 -



WORLD DATA CENTER A

Upper Atmosphere Geophysics

REPORT UAG-4

ABBREVIATED CALENDAR RECORD
1966-1967

sy
Zs

December 1968



Day

10 cm Sun- Geo- Tono~

CMP of

Flux spot mag. Index Region
S No. Ap Ip Ia Number

Highlights

196
19

20

21

22

*

7 Hay

(Cont'd)

143 80 6 0

156* 99 6 0

178 «118 3.0

adjusted for burst

0

R-B816(2)
(S14)

Events: minor: Ho (R-8816) 0208 with cm solar burst and SID; Ha
(R-8818) 0611 with cm and m solar burst and SID, 0840 with SID,
1104 with cm and dm solar burst and SID, 1120 with cm solar burst,
1252 with cm and dm solar burst and SID, and 1523 with cm, dm and
m solar burst, m type II and IV, solar x-rays and SID; SID at 0830
and 1710; DSD (R-8809) 1805-1845.

Solar: small spot continues with radio int. 10 in R-8809; spot con-
tinues with radio int. 11 with 1 subflare in R-8810; spot groups
decreasing in size with radio int, 16 and 3 subflares in R-8816;
three spot groups with one By, radio int. 62 and 16 subflares in
R-8818; spot with radio int. 19 in R-8819.

Geophysical: mostly magnetically quiet, 1 Kpl-, 2 Kplo, 2 Kpl+;
ionospheric F region relatively quiet.

Events: minor: Ho (R-8818) 0911, 1006 with cm solar burst, 1510
with em, dm and m solar burst, m type II and IV, solar x-rays and
SID, 1734 and 2353; Ha (R-8806) 2229 with cm and dm solar burst
and SID, and 2316; cm and dm solar burst with SID 0230; cm solar
bursts 0500-1010; m solar bursts 0630-1500; cm solar burst 1650
with SID and 1820 with SID; SID at 2000; m solar burst 2130-2330.

Solar: small spot with radio int. 8 and 2 subflares in R-8809; spot
decreasing with radio int. 12 in R-8810; spot groups continue with
radio int. 18 and 7 subflares in R-8816; spot groups continue with
radio int. 85 and 23 subflares in R-8818; spot continues with radio
int. 17 and 1 subflare in R-8819; spot at EB limb with radio int. 10
and 3 subflares in R-8821; br. green corona NE and SE limbs.

Geophysical: continued magnetically quiet, until 1800, 1 Kp0+, slight
activity thereafter; ionospheric F region relatively quiet.

Events: major: Ho (R-8818) 1919-2024, impt. 2n with cm, dm and
solar burst, m type II and IV and/Dkm type IV, DSD, solar x-rays
and SID; minor: Ha (R-8818) 1035 with cm, dm and m solar burst,
1138, 1249 with cm solar burst and SID, 1304 with cm, dm and m
solar burst and SID, 1439 with cm and dm solar burst and SID, 1535
with cm and dm solar burst, solar x-rays and SID, 2347 with solar
x-rays and ADF; Ha (R-8809) 2143 with cm and dm solar burst and
SID; cm, dm and m solar burst and SID at 0240; cm solar burst and
SID 0330; cm, dm and m solar burst 0740, 0755 and 1040; dm and m
solar burst 0840; cm, dm and m solar burst 0945 with SID; APR
(R-8821) 1000-1115; cm solar burst, solar x-rays and SID at 1240;
dm solar burst, solar x-rays and SID at 1340; BSL (N35 E limb) 1535-
1800; cm and dm solar burst and SID at 1615, 1740, 1800 and 2150;
dm solar burst with SID 1855 and 2155.

Solar: small spot with radio int. 10 in R-8809; spot continues with
radio int. 16 and 3 subflares in R-8810; spot groups continue with
radio int. 14 and 2 subflares in R-8816; one of three spot groups
increases greatly in size with radio int. 112 and 20 subflares in
R-8818; spot appears with 2 subflares in R-8820; spot continues with
radio int. 24 in R-8819; spot continues with radio int. 22 and 1 sub-
flare in R-8821.

- 108 -



0s est

Avguat 8, 1967 Q90T Of

FLARES
10/26

19/29

om
ém
im i
Dim

310

aye

p ]_Kp rs ie 2 a Za Ze rs tp

u Cee

CI 8 cy a 2 5 e
140 10 em fx
19 Re Tonospherte ¥ region slightly disturbed.

CHP Region 8927 120
Region 8923 $08

Bs tet

Auguct 9, 1967 00 ur Ol 02

FLARES
——— we
ma

Bursts

ns ie Te z |1p
(O}10

8 6 [J 12 15

137 10 ex flux
107 Re One of the ten eagnetically quiet
AP 16451 119(6p)5

August 10, 196700 urOl 02 OS 0405

FLARES

a
am.
Dkm_

S10

Raye

TMp |_Kp ie i crs " 7 = nt

n [se : 2\T0

C7 rf ti cf @

133 10 em flux
91 Rr One of the five most magnetically disturbed day:

Bursts

CHP Region 8921 1123

2 8

August 11, 1967 0 or Ol

FLARES

Sp
= Se = cry Ip
2 Io

Bp [Kp 3e ae
2 [se Tass eesy
o iF 8 We 5 ie a i]

One of the five most magnetically discurbed days; tonospheric F region disturbed,

133 10 em flux
94 Re

OUP Region 8925 N28
(16654) N2OC@E)L

- 131 -



Dec. 7, 1967 0 UTO 02

oy

FLARES:

om

‘dm

Bursts

TMm.

Oke

‘SiO

X-Rays:

Bp [Kp

B]ip

20 [se

5}t0

132 10 en flux

126 Re
car 9101 wi5(2)

16580 110 (ap)5
16581 24 Cap)?

bec. 8, 1967 00 ur Ol 02

3

6 8 ig 5 w i
Aurora overhead over USSR at ¢ = 57° 1100-1700.

FLARES

on

Bursts

134 30 om flux
aL ke
or

dec. 9, 2967 00 UT O02

8

(16885) 112 ap)
(16603) 824 (ap)2

03

06 cy ie 5 8 a
one of five moot magnetically disturbed dayas honogencave gnd rayed auroral ates visible overhead over

fi Atlantle at $ = 61° 0500; aurora overhead over USSR at @ = 58° 1500-1800 and at ¢ = S7° 1900; Lonospherte
F region slightly disturbed.

oo 5 Tt te

FLARES

om

‘dm

Bursts

ry

mm
Okm

S10

Rays

Fp [_Kkp.

= ze iE 3s Ey 3s En

T
so [se

Ip
alto

136 10 em Flux
17 Be
GMP $103 520

9102 N23 16595 u24 6

pec. 10, 1967 00 ur Ol 02

fi)

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2

FLARES

— inyis = In/10

om

Bursts

L
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n ky n fas deepy |) ee
n

}Ip

ofa

132 10 em fLux

B

AM ne
‘CHP 9108 SLB(261) 16591 S16 (Bp)4

Dec. 11, 1967

16596 420 ap

muro

16601 $24 (8)2

Cy

6 6 @ 5 iy 2

one of ten magnetically quiet days; br. green corona 7 days Later on SH Linb.

ee er re a a en en rn

Ei)

FLARES

20/084
= 10/0, — 1/01

om

dm

E pote store.

Bursts

es

a]ip

o}i0

LAL 10 em flux

132 Re
CAP 9107 817(683) (16613) N20 (ap)2

®

6 09 i 8 6 a

one of five magnetically quiec days; br. green corona 7 days later on HW Limb,

159



ABBREVIATED CALENDAR RECORD 1966 - 1967

INDEX
Page
Introduction 1
Explanatory description for January 1966 - June 1967 1 |
Explanatory description for July - December 1967 3
Calendar Record
January 1966 5
February 9
March 13
April 19
May 25
June 30
July 37
August 43
September 50
October 57
November 63
December 68
January 1967 75
February 82
March 89
April 97
May 104
June 113
July 121
August 129
September 137
October 145 |
November 151 |
December 157 |

Appendix:
List of standard data publications 164



Day 10 cm Sun- Geo-
spot mag.

Flux
A

No.

Ap

Iono-
Index
Ip Ia

CMP of
Region
Number

Highlights

1967 May
22

(Cont'd)

23 189

24 196

145

159

li

97

Geophysical: mostly magnetically quiet, becoming extremely quiet after
1200, 1 KpOo, 3 KpO+; ionospheric F region relatively quiet.

Events: minor: Ha (R-8818) 0011 with cm, dm and m solar burst, SID
and DSD, and 1215 with cm and m solar burst; Ha (R-8809) 1106 with
m solar burst; cm, dm and m solar bursts 0320-1600; m noise storms
0700-1350; APR (N40 E limb) 0015-0330 and EPL (N44 E limb) 0025-
0145; DSD (R-8818) 1355-1415; ADF (R-8818), (R-8816), (R-8819),
(R-8818), (S45 E03) and (S08 W55) 1600-2400; SID 1700.

Solar: small spot near W limb with radio int. 6 in R-8809; spot con-
tinues to W limb with radio int. 20 and 2 subflares in R-8810; spot
groups decreasing with radio int. 10 in R-8816; spot groups continue
with radio int. 158 and 20 subflares in R-8818; small spot continues
near W limb in R-8820; spot continues with radio int. 19 in R-8819;
spot continues with radio int. 20 and 2 subflares in R-8821; spot
at E limb with radio int. 35 and 6 subflares in R-8824

Geophysical: continued mostly magnetically quiet until 1500 increasing
to slight-to-moderate activity thereafter.

Events: major: Ho (R-8821) 0709-0736, impt. 2n with m solar burst;
Ha (R-8818) 1804-2013, impt. 2b with cm and dm solar burst and SID,
1836-2146, impt. 2b with cm, dm, m and Dkm solar burst, dm and Dkm
type IL and IV, m type II, solar x-rays, and SID, 1850-2122 impt
2b with m solar burst, m type II and IV, 1932-2156, impt. 2b with
solar x-rays and SID; minor: Ha (R-8818) 0740 with m solar bursts,
2112 with cm solar burst, and 2129; Ha (R-8821) 1106; Ha (R-8824)
2028 with cm solar burst; Ha (R-8820) 2145 and 2349; BSL (R-8825)
0640-0725 with m solar bursts; m noise storm 0640-1405; cm and m
solar burst 1455; dm solar burst and m type IV 1535; EPL (S35 W limb
1630-2005; SED at 1720 and 1825; m solar burst 1755 with solar x-rays;
m solar burst 2100 with SID; cm and m solar burst 2235 with SID.

Solar: small spot groups continue with radio int. 12 and 2 subflares
in R-8816; spot groups continue with radio int. 111 and 11 subflares
in R-8818; another spot group appears with radio int, 30 and 3 sub-
flares in R-8819; a second spot group appears with radio int. 24
and 2 subflares in R-8821; spot continues with radio int. 30 and 9
subflares in R-8824; small spot with 5 subfleres in R-8825; radio
int. 22 with 1 subflare in R-8829,

Geophysical: very slight magnetic activity most of the day, though
slight-to-moderate activity 1500-2100 accompanied by sc at 1726;
cosmic ray Forbush decrease begins near end of day; PCA event 0130,
>72 hours in duration, peak absorption 11 db on 25 May 0700-1300,

Events: minor: Ha (R-8824) 0003 with BSL, 0854, and 1030; Ha
(R-8818) 0258 with cm and dm solar burst, solar x-rays and SID, 0337
with em, dm and m solar burst, 0835 with cmj'm end dm solar burst,
0855, 1812 with cm, dm and m solar burst, m type IV and SID; Ho
(R-8821) 0820, 1016; HY (R-8825) 1124 with m solar burst and 2203;
em solar bursts 0730-1130 and 1900-2330; dm solar burst 0515;

m noise storm 0310-0145: em, dm and m solar burst 0815;
SID at 0620 and 0640; cm and dm solar bursts 1210-1300 and 2300-
2330; cm and dm solar burst with SID at 1425 and cm solar burst with
SID 1445 and 2230.

- 109 -



1966 10 cm Sun~ Geo-
May Flux spot’ mag.
$ Sa__No. Ap

CMP of
Region
Number

Highlights

28 (103) ** 60 5
at 1415UT
29 103 107 39 4

30 99 102 58 6

31 103 106 56 48

June
1 loz 105 71 12

(R+8313) (4)
(N28)

R-8314
(N24)

R-8318
qyo5)

R-8315 (4)
(N29)

R-8319
(N21)

R-8320(3)
(N28)

Solar: no spot mag. obs. Mt. Wilson; spot gone, radio
int. 25 and 21 cm radio noise in R~8310; 1 subflare in
R-8312; spot decreasing, radio int. 36, 21 cm radio noise
and 2 subflares in R~8314; spot growing, radio int. 14 and
8 subflares in R-8318; small spot appears and radio
int. 10 in R~8320; 1 subflare in R-8315; major event:
Hy (R-8310) impt. 2b, 1521-1955 with cm. and m. solar
bursts; type IV, 21-41 Miz, 1628-1855; br. surge (R-8310)
1545; minor event: Hy (R-8318) 1444.

Geophysical: continued magnetically quiet until slight dis-
turbance 2100-2400; SL-SWF, SEA, SES, SPA and SFD at 1614.

Solar: no spot mag. obs. Mt. Wilsons radio int. 17 and
21 cm radio noise in R-8310; spot decreasing, radio
int. 32, 21 em radio noise and 2 subflares in R-83145
spot continues, radio int. 16 and 4 subflares in R-8318;
small spot continues, radio int. 8 and 2 subflares in
R-8320; 1 subflare in R-8315; 1 subflare in R-8319; radio
int. 10 and 1 subflare in R-8326; radio int. 7 and 1 sub-
flare in R-8328; major event: Hy (R-8309) impt. 2n, 1005-
1243; minor events: Hy (R-8320) 0910; m. solar noise storm.
Geophysical: continued magnetically quiet; ionospheric
F region relatively quiet.

Solar: no spot mag. obs. Mt. Wilsons radio int. 15 and
21 em radio noise in R-8310; spot continues to decrease,
radio int. 23 and 21 cm radio noise in R-8314; spot con-
tinues and radio int. 11 in R-8318; spot disappears in
R+8320; small spot appears and radio int. 8 in R-83265
radio int. 8 and 7 subflares in R-8328; radio int. 8 and
5 subflares in R-8329; 1 subflare in R-8312.

Geophysical: continued magnetically quiet until 1800-2400
slight disturbance; SPA at 2320.

Solar: no spot mag. obs. Mt. Wilson; radio int. 10 and
1 subflare in R-8310 at W limb; spot still decreasing,
radio int, 21 and 21 cm radio noise in R~8314; spot
continues to decrease and radio int. 7 in R-8318; spot
decreases and radio int. 6 in R-8326; small spot appears
and radio int. 8 in R-8328; spot appears, radio int. 18
and 11 subflares in R-8329; minor events: Ha (R-~8326)
0926E, (R-8328) 1028; eruptive prominence (R-8309) 074023
br. surge (N42 W90) 0812.

Geophysical: moderate~to~severe magnetic disturbance,
Kp 3+5~So4+406-645+, with a preliminary sudden commence~
ment at 0342; SPA at 0415; aurora overhead at ¢ = 56° over
North America 0600-1100; ionospheric F region very dis-
turbed with some auroral absorption at high latitudes.

Solar! spot continues to decrease, radio int. 21, 21 cm
radio noise and 1 subflare in R-8314; small spot continues
and radio int. 8 in R-8318; spot increases, radio int. 13
and 3 subflares in R-8326; small spot continues, radio
int. 11 and 2 subflares in R-8328; spot continues, BY,
and radio int. 19 in R-8329; spot appears and 7 subflares
in R-8330; radio int. 18, 2 subflares and moderate green
corona in R-8332 at E limb; 2 subflares in R~8312.

4 Strong burst in progress, no value reportable for 1700 UT.

- 30 -



Day 10 cm Sun- Geo~
Flux spot mag.

S.No.

Ap.

Tono-
Index
Ip Ia

CMP of
Region
Number

Highlights

1967 February
26
(Cont'd)

27 180 = 186

28 184 = 166

1967 March
01 198 = 172

oo

R-8704(2)
(N23)

R-8706 (4)
(s18)

R-8707
qul7)

Events: minor: Ho (R-8704) 0853 with Dkm, m, dm and cm solar burst;
SID at 0137 with cm solar burst and DSD; dm and cm solar bursts at
0410 and 1520

Solar: spot size increases, radio int. 14 and 1 subflare in R-8695
as region goes over W limb; radio int, 11 in R-8698; spot decreases
slightly, radio int. 9 in R-8703; large spot group decreases in
size, continued 6-type, radio int. 97 and 16 subflares in R-8704;
multiple spot groups appear, radio int, 10 and 3 subflares in
R-8706; several small spots, radio int. 11 and 5 subflares in
R+8707; small spot appears, radio int. 5 in R-8709; multiple
spots, relatively large, appear, radio int. 20 and 1 subflare
in R-8711; br. green corona NE and NW limbs.

Geophysical: very slight magnetic activity, subsiding to quiet
several times.

Events: major: Ha (R-8704) impt. 2n 1637-1830 with SID, solar
x-rays and m, dm and cm solar burst; m and Dkm type II and Dkm
type IV, and impt. 2n 2051-2256 with SID and solar x-rays;
minor: Ho (R-8704) 2337 with SID and dm and cm burst; Dkm, m,

dm and cm solar burst at 0845; SIDs at 1454 and 1503 with m, dm
and cm bursts; SIDs at 0251 and 1300 with cm solar bursts.

Solar: radio int. 14 as R-8698 goes over W limb; spot decreases
slightly, radio int. 8 in R-8703; large spot group increases
slightly, continued 6-type radio int. 67 and 10 subflares in
R-8704; spot groups continue, radio int, 12 and 1 subflare in
R-8706; spot group grows in size, radio int. 41 and 8 subflares
in R-8707; small spot continues, radio int. 6 in R-8709;
multiple spots continue, radio int. 26 in R-8711; spot group
appears, radio int. 16 and 1 subflare in R-8714; no spot, radio
int. 9 in R-8700a.

Geophysical: mostly magnetically quiet.

Events: minor: Ha (R-8704) 1558 with SID and dm and cm solar
bursts ;(R-8707) 2020 with dm and cm solar burst; SID with cm
solar burst at 0148; m, dm and cm solar bursts at 1120, DSD
(R-8704) 1736 with dm and cm solar burst; SID with m, dm and
cm solar burst at 1835; SID at 2234; DSD (R-8704) 1940; BSL
(R-8698) 1346, (R-8700a) 1506; EPL (R-8711) 1645, (R-8700a)
1828 and 1853; APR (NO9 W limb) 2206.

Solar: spot continues with radio int. 8 in R-8703; spot groups
By and é-type continue with radio int. 86 and 8 subflares in
R-8704; spot groups continue with radio int. 16 and 2 sub-
flares in R-8706; growing spot group becomes By with radio
int. 36 and 23 subflares in R-8707; small spot continues with
radio int. 14 in R-8709; spot group growing becoming y with
radio int. 39 and 7 subflares in R-8711; spot group grows and
becomes By with radio int. 32 and 8 subflares in R~8714; br.
green corona NE limb; mod. green corona NW limb.

Geophysical: mostly very slight magnetic activity with several
periods of quiet; aurora overhead in U.S.S.R. to $ = 57° 1400-
1700.

Events: minor: S1D at 0155 and 1815; SID at 0425 with m, dm
and cm solar burst and solar x-rays, DSD (R-8707) 0830 with
m, dm and cm solar burst and 1210; DSD (R-8714) 1430 with m,
dm and cm solar burst; SID with dm and cm solar burst at 1946;
m solar noise storms; no solar x-ray obs. 0711 to 0931.

- 89 -



Day 10 cm Sun- Geo- Iono- CMP of Highlights
Flux spot mag. Index Region
Ss No. Ap Ip Ia Number

1967 February
07 167 138 30 6 4 R+8682(2) Solar: radio int. 11 in R-8674; spot disappears, radio int.10 in
(N16) R-8671; spot continues, radio int. 14 and 1 subflare in R-8680;
spot continues, radio int. 12 in R-8681; spot group continues,
radio int. 34 and 2 subflares in R-8682; spot group continues,
radio int. 29 and 14 subflares in R-8684; spot decreases, radio
int. 13 and 4 subflares in R-8685; spot appears, radio int. 17
and 6 subflares in R-8687.
Geophysical: very slight magnetic activity until 1500, moderately
severe storm beginning after sc at 1636; aurora overhead in
U.S.S.R. to ¢ = 53° 1600-2200 and ¢ = 55° 2200-2400; br. display
visible all night of Feb. 7-8 in Western Europe with much red
coloration between 2140 and 2400, with rayed arc intermittently
becoming quiet and homogeneous and with ray bundles and visible
as homogeneous glow to $ = 53°; ionospheric F region disturbed
with some auroral blackout at high latitudes.
Events: major: Ha (R-8684) impt. 2£ 0720-0755 with m, dm and cm
solar burst, impt. 2n 1025-1125 with SID and m, dm and cm solar
burst; minor: Ha (R-8684) 0128 with SID, solar x-rays and dm
and cm solar burst, and 0624 with solar x-rays; (R-8687) 1136,
1255 with Dkm and m burst; solar x-rays at 1028, SID at 1557,
1801 and 1857, 2056 with solar x-rays and 2233.

08152 109 «446 «#40 2 Solar: radio int. 11 in R-8674; R-8671 goes over W limb; spot
size decreases, radio int. 13 and 1 subflare in R-8680; spot
continues, radio int. 12 and 1 subflaxe in R-8681; spot group
increases, radio int. 30 and 7 subflares in R-8682; spot group
increases, radio int. 25 and 5 subflares in R-8684; spot group
decreases, radio int. 10 in R+8685; spot continues, radio int.
15 and 1 subflare in R-8687; mod. green corona NE, SW and NW
limbs.

Geophysical: moderately severe magnetic storm continues until
0600, moderate activity thereafter; aurora overhead in North
America to @ = 58° 0000-0500 and to } = 59° 0600-1100, overhead
in U.S.S.R. to ¢ = 55° 0100 and 1400, and to ¢ = 51° 1000-1300
and 1900-2400, weak display in Western Europe visible through
cloud to ¢ = 59° night of Feb. 8-9; ionospheric F region very
disturbed with auroral blackout at high latitudes.

Events: minor: Ha (R-8687) 0233; (R-8684) 0436 with SID and
solar x-rays; (R-8682) 0844 with Dkm, m, dm and cm burst;
(R-8674) 2233; SID at 1814 with dm and cm burst; solar x-rays
at 0431; Dkm and m solar burst at 0955; cm solar burst at 1045.

09.150 112 8 0 0 Solar: radio int. 12 in R-8674; spot disappears, radio int. 12
and 1 subflare in R-8680; spot continues, radio int. 12 in
R-8681; large By spot group continues, radio int. 32 and 6
subflares in R-8682; spot group continues, again Sy, radio int.
23 and 1 subflare in R~8684; spot continues, radio int. 9 in
R-8685; spot continues, radio int, 13 and 3 subflares in R-8687;
spot appears, radio int. 9 and 1 subflare in R-8688; mod. green
corona SW and NW limbs.

Geophysical: slight magnetic activity until 0900, mostly quiet
thereafter.
Event: minor: Ha (R-8682) 1016.

10 144 97 2 (0) 0 R-8684 Solar: radio int. 12 as R-8674 goes over W limb; spot gone, radio

(N23) int. 14 and 2 subflares in R-8680; spot continues, radio int. 13
R-8685 and 1 subflare in R-8681; spot group decreases in size, radio
($25) int. 22 and 4 subflares in R-8682; fy spot group decreases,

(.) estimated from less than 24 hours data

- 84 -



1966 10 cm Sun- Geo- CMP of Highlights
Feb. Flux spot mag. Region
S__Sa__No. Ap Number

23° 84 83 55 28 = R-B174 Solar: small spot group persists and radio int. 7 in R-8166
(N21) near W limb; spot group persists radio int. 12 and 2 sub-
flares in R-8171; spot persists, radio int. 10 and 2 sub-
flares in R-8174; spot persists, radio int. 7 and 6 subflares
in R-8177; strong green corona continues on NW limb; minor
event: BX (R-8174) 1243Z; at 960 and 328 MHz, burst, 1441.
Geophysical: moderate magnetic disturbance becoming more severe
0300-1200 Kp 5o505-; fonospheric absorption on 30 MHz at
Great Whale River continues to 2356; ionospheric F region
very disturbed with auroral blackout at high latitudes.

24 84 82 42 19 R-8173 Solar: spot group persists, radio int, 9 and a subflare in
(824) R-8171; spot persists, radio int. 11 and 7 subflares in
R-8174; spot persists but radio int, decreasing in R-8177;
atrong green corona continues on NW limb; minor event: Ha
(R-8174) 1109.
Geophysical: slight-to-moderate magnetic disturbance; at 0030
auroral glow on northern horizon at ¢ = 58° over Western
Europe; aurora overhead at ¢ = 59° from 0600-1100 in North
America; ionospheric absorption on 30 MHz at Great Whale
River 0220-2156; ionospheric ¥ region disturbed with auroral
blackout at high latitudes.

25° 81 79 «37 10 Solar: spot decreasing, radio int. decreasing but 3 subflares
in R-8171; small spot persists, radio int. 15 and 7 sub-
flares in R-8174; small spot persists and 2 subflares in
R-8177; 2 subflares in R-8166; minor events: Ha (R-8166)
0610; br. surge (R-8166) 0657; eruptive prominence (R-8166)
0730.

Geophysical: slight-to-moderate magnetic disturbance 0000-0600,

fairly quiet thereafter; ionospheric F region disturbance dies
away, leaving slight disturbance in some sectors.

26 85 83 36 3 Solar: spot persists and a subflare in R-8171; spot persists,
radio int. 22 and 13 subflares in R-8174; small spot persists
in R-8177; minor events: Ha (R-8174) 0254, 0355, 0705 and
1000; at 3750, 2000 and 1000 Miz, burst, 0112; active
prominence region (N48 W limb) 1042,

Geophysical: magnetically very quiet; SL-SWF and SPA at 0103.

27 85 83 35 4 R-8177 Solar: 3 subflares in R-8171 at W limb; spot persists, radio
(N28) int. 19 and 13 subflares in R-8174; small spot persists in
R-8177; radio int. 8 and 8 subflares in R-8184 at E limb;
minor events: Ha (R-8174) 0015, 2145 and 2311; (R-8184)
2331E; dark surge (R-8174) 0400; active prominence region
(N40 E limb) 0752.
Geophysical: continued magnetically quiet; S-SWF and SPA at
0043 and 2326, SPA and SES at 1217.

28 «86 84 31 2 Solar: spot group persists, radio int. 25 and 14 subflares in
R-8174; small spot persists and 2 subflares in R-8177; new
spot appears and radio int. 11 in R-8184; strong green
corona, also yellow line emission on NW limb; minor events:
Ha (R-8184) 0040 and 0455, (R-8174) 0347, 0931E, 1650, 2025,
2050 and 2257E, (R-8177) 0955; at 9400, 3750, 2000 and 1000
MHz, burst, 0351; at 9400, 3750, 2800 and 2000 Maz, burst,
2304; dark surge (R-8174) 0516.

Geophysical: magnetically very quiet, six Kp 0o or 0+; S-SWF
and SPA at 0351, SFD at 1653 and 1837, G-SWF and SPA at
2258; ionospheric F region relatively quiet.



1966 10 cm
Sep. Flux
ss

Sun- Geo- CMP of Highlights
spot mag. Region
No. Ap Number

19 145 147

20 142 143

21 136 137

76 «17 Solar: spot group continues, radio int. 30, 21 cm radio noise
and 9 subflares in R-8505; spot group continues, radio int.
55, 21 cm radio noise and 15 subflares in R-8509; small
spot continues in R-8510; spot group continues, radio int.
20, 21 cm radio noise, and 2 subflares in R-8496; radio int.
13, 3 subflares at limb in R-8497; radio int. 16 in R-8513;
radio int. 13 in R-8514; major events: Hy (R-8509) impt.
26, 1157-1240 with em., m., and dm. solar bursts; minor
events: HY (R-8509) 1641, 2133, and 2338E with cm. solar
burst and active dark filament; HY (R-8505) 1840; type II,
20-41 Mz, 1536-1543; type II, 50-100 Miz, 1537-1543; type
II, 21-41 Miz, 1546-1549; m. noise storms 0825-1500 and
2200-0200; m. and dm. solar bursts 0720-0740 and 0825; cm.,
m, and dm. solar bursts 1305-1545; cm. and m. solar bursts
2200; br. surges (R-8496) 0235E, 1455 and 1528E; active
prominence region (R-8496) 0252; active dark filaments
(R-8496) 0155 and 0239, (R-8505) 0511, (R-8512) 1302.

Geophysical: slight-to-moderate magnetic activity with a
preliminary sudden commencement at 0251; SFDs at 0251 and
1410; SPAs at 0942 and 1915; SL~SWF, SEA, SPA and SES at
1155; S-SWF, SCNA, SEA, SPA, SES and SFD at 1515; S-SWF
SPA, SES and SFD at 1756; G-SWF and SPA at 2140; S-SWF and
SCNA at 2345.

78 21 R-8505(2) Solar: Spot group continues, radio int. 15, 21 om radio
N07) noise and 5 subflares in R-8505; 8y spot group increases
R-8506(4) in size, radio int. 43, 21 cm radio noise and 19 subflares
(N22) in R-8509; small 6y spot group appears, radio int. 9 and
3 subflares in R-8511; radio int. 10 in R-8513; br. green
corona at NE limb; major events: HY (R-8505) impt. 2b,
1738E-2100 with cm. and m. solar bursts and dark surge,
and impt. 2b, 1045E-1055 with cm., m., and dm. solar
bursts; minor events: Hy (R-8509) 0255E with cm. solar
burst, 0821 with cm. and m, solar bursts and O840E with
cm. and m, solar bursts, Hx (R-8505) 0332 with cm. solar
burst, br. surge and dark surge; Hr (R-8514) 1116 and 1129;
m. noise storms 0625-1510 and 1630-0055; cm., m., and dm.
solar bursts 0705-0755 and 1230-1830; m. solar bursts
0620-0635 and 2310; active prominence region (R-8497)
0606E; dark surges (R-8505) 0840E and 1105E and (R-8506)
0827 and 0830; active dark filament (R-8512) 0753E; br.
surge (R-8513) 0755.
Geophysical: slight-to-moderate magnetic activity continues;
G-SWF and SPA at 0257; S-SWF and SPA at 0331; G-SWF, SES
and SFD at 0820; SPA and SES at 1020; SPA at 1219; SEA,
SPA and SES at 1245; SFD at 1448; SES at 1616; SL-SWF, SPA,
SES and SFD at 1700; at 1200 homogeneous auroral patch
overhead at § = 62°, at 1500 homogeneous band at $ = 61°,
at 1600-1700 homogeneous arc at § = 61° and at 1700 homo-
geneous arc at # = 60° over U.S.S.R.; aurora at # = 59°
over North America 0600-1100.

89 10 —-R-8509 Solar: Spot group continues, radio int. 20, 21 em radio

(24) noise, and 2 subflares in R-8505; Sy spot group continues,
radio int. 33, 21 cm radio noise and 14 subflares in R-8509;
spot group increases in size, radio int. 20 and 1 subflare
in R-8511; spot group appears, radio int. 35, 21 cm radio
noise and 3 subflares in R-8516; radio int. 8 in R-8514;
minor events: HY (R-8511) 0916E with m. solar burst, (R-8516)
0930E with cm. solar burst, (R-8509) 0928E with cm. solar
burst, (R-8514) 1811; cm. and m. solar bursts 0059-0425

- 54 -



Day 10 cm Sun Geo- Iono- CMP of Highlights
Flux spot mag. Index Region

S__No. Ap Ip Za Number

1967 March

28 Events: minor: Ha (R-8740) 0617 with SID and m, dm and em solar

(Cont'd) burst, 0700 with cm solar burst, 1733 with SID, solar x-rays, m,

dm and cm solar burst and m type II, 1903 with SID, DSD, m, dm and
cm solar burst and m type Il, (R-8733) 1113, (R-8739) 1313; DSD
(R-8739) 1440 with SID; ADF (R-8740) 2000-0640, (R-8739) 2000-0640;
$IDs at 1620 with m and cm solar burst, 2250 with cm solar burst;
m solar noise storm.

29.179 = 130 6 0 2 R+8741(2) Solar: spot groups continue, one again By, with radio int. 72 and
(N18) 22 subflares in R-8740; spot group continues with radio int. 17
and 2 subflares in R-8741; spot group growing with radio int. 20
and 10 subflares in R-8745; spot group continues to grow with
radio int. 48 and 30 subflares in R-8739; spot group with radio
int. 14 and 2 subflares in R-8751; spot group on W limb with radio
int. 24 and 7 subflares in R-8752.

Geophysical: mostly very slight magnetic activity; aurora overhead
in U.S.S.R. to ¢ = 58° 1400-1800.

Events: minor: Ha (R-8740) 0648 with m and cm solar burst, 1726
with SID, solar x-rays and m and cm solar burst, 2245 with SID, ADF
and cm solar burst, (R-8745) 0711 with solar x-rays and m and cm
solar burst, 1156 with SID and cm solar burst, (R-8752) 0932 with
SID and m, dm and cm solar burst, 1828 with cm solar burst, 2125;
ADFs (R-8740) 2100, (R~8742) 2110, (R-8745) 2230; SID at 1650 with
cm solar burst; m solar noise storm.

30176 130 1 0 2 Solar: spot groups continue, one still By, with radio int. 82 and 18
subflares in R-8740; spot group continues decreasing with radio int.
14 in R+8741; spot group continues with radio int. 19 and 7 subflares
in R+8745; spot group continues with radio int. 37 and 13 subflares
in R-8739; spot continues with radio int. 10 and 3 subflares in
R-8751; spot continues with radio int. 28 and 3 subflares in R-8752;
spot on W limb with 2 subflares in R-8754; br. green corona NE, SE
and NW limbs; mod. green corona SW limb.

Geophysical: slight magnetic activity until 0600, subsiding to very
slight activity until moderate activity 2100-2400; ionospheric F
vegion slightly disturbed.

Events: major: Ha (R-8740) impt. 2n 0842-0935 with SID and Dkm, m,
dm and cm solar burst; minor: Ho (R-8739) 0023 with SID, solar
x-rays and cm solar burst, 0530 with cm solar burst, (R-8733) 0103E,
(R-8740) 0756 with SID and Dkm, m and cm solar burst, 0856E with
solar x-rays, 1144 with SID, ADF and Dkm, m, dm and cm solar burst,
1936 with SID and dm and m solar burst, 2336 with SID and cm solar
burst; BSL (R-8733) 0210 with cm solar burst; ADF (R-8740) 1510;
$1Ds at 0450, 0955 and 1335 with cm solar bursts; m solar noise
storm.

31 168* 115 3 0 0 Solar: spot groups begin going over W limb with radio int. 74 and 17
subflares in R-6740; spot group continues with radio int. 14 and 1
subflare in R-8741; spot group continues with radio int. 18 and 7
subflares in R-8745; spot group continues with radio int, 31 and 3
subflares in R-8739; small spot group continues with radio int. 10
and 1 subflare in R-8751; spot group continues with radio int. 23
and 2 subflares in R-8752; spot continues with radio int. 10 and 1
subflare in R-8754; br. green corona NE limb.

Geophysical: very slight magnetic activity until 0300, mostly ex-

tremely quiet thereafter, 5 Kp0+.

* adjusted for burst

- 96 -



Upper Atmosphere Geophysics Report UAG-1

"IQSY Night Airglow Data" by L. L. Smith, F. E. Roach and
J. M. McKennan of Aeronomy Laboratory, ESSA Research Labora-
tories, July 1968, single copy price $1.75.

Upper Atmosphere Geophysics Report UAG-2

"A Reevaluation of Solar Flares, 1964-1966" by Helen W. Dodson
and E. Ruth Hedeman of McMath-Hulbert Observatory, The Univer-
sity of Michigan, August 1968, single copy price 30 cents.

Upper Atmosphere Geophysics Report UAG-3

"Observations of Jupiter's Sporadic Radio Emission in the
Range 7.6-41MHz, 6 July 1966 through 8 September 1968” by
James W. Warwick and George A. Dulk, Department of Astro-
Geophysics, University of Colorado, October 1968, single
copy price 30 cents.

USCONM-ESSA-ASHEVILLE-~1/15/69--1100



Day 10 cm Sun- Geo-
Flux spot mag.
S__No. Ap

Tono- CNP of
Index Region
Ip Ia Number

Highlights

1967 January
Ol 129 60 18

02 148% 9930 7

03.159 124 10

04 166 «148 2

*adjusted for burst

02
0 0 R-8629
(823)
R+B628(2)
(N16)
03
0 0

Solar: spot continues, radio int. 10 and 1 subflare in R-8624;
spot group continues, radio int. 27 and 4 Subflares in R-8629;
R-8631 develops multiple spot groups, radio int. 14 and 4 sub-
flares; spot continues, radio int. 12 in R-8633; mod. green
corona NE and SE limbs.

Geophysical: slight magnetic activity except 1200-1500 moderate
activity; aurora overhead in U.S.S.R. to $ = 57° 1400-1600 and
1700-1900, $ = 54° 1600-1700, @ = 58° 1900-2000

Events: minor: Ho (R-8629) O805E and 1109; Ho (R-8631) 1035
with Dkm, m, dm and cm solar burst, SID and solar x-rays; SID
0652 with solar x-rays and 2157.

Solar: spot continues, radio int. 11 in R-8624; spot group in-
creases in size, radio int. 42 and 29 subflares in R-8629;
multiple spot groups continue, radio int. 16 and 6 subflares
in R-8631; no spot, radio int. 12 and 6 subflares in R-8632;
spot continues, radio int. 15 and 2 subflares in R-8633; mod.
green corona NE limb.

Geophysical: continued slight magnetic activity until 0600,
quiet thereafter.

Events: minor: Ho (R-8632) 1733; SID 1235 and 1510 with m, dm
and cm solar bursts, also Dkm and m type 11; SID 1600, 2050
and 2133; ADF (R-8629) 0927£-1200D

Solar: spot continues, radio int. 16 in R-8624; By spot group
increases in size, radio int. 52 and 27 subflares in R-8629;
multiple spot groups continue, radio int. 17 and 2 subflares
in R-8631; By spot group appears, radio int. 8 and 7 sub-
flares in R-8628; spot group appears, radio int. 12 and 2 sub-

flares in R-8632; spot continues, radio int. 17 in R-8633; mod.

green corona NE and NW limbs.

Geophysical: slight worldwide magnetic activity until 2100-2400
KpO+ though moderate magnetic disturbance at high latitudes
0935-1900.

Events: major: Ho (R-8629) impt. 2n, 2330-0010 with m solar

burst; minor: Ha (R~8631) 1134 with Dkm, m, dm and cm solar

burst and SID; (R-8629) 1726 with SID, SDF and DSD; a, dm

and cm solar burst at 0830; Dkm, m, dm and cm solar burst at

1035; m and cm solar bursts at 1355 and i435; ADF (R-8629)

1115-1750; DSD (R-8629) 1020 and 1107.

Solar: spot gonc, radio int. 13 in R-8624; spot group becomes
very large, radio int. 51 and 10 subflares in R-8629; multi-
ple groups By type continue, radio int. 16 and 3 subflares
in R-8631: spot group increases in size, radio int. 10 and
4 subflares in R-8628; spot group continues, radio int. 13
and 9 subflares in R-8632; spot appears, radio int. 15 and 1
subflare in R-8637; By spot continues, radio int. 7 and 1 sub-
flare in R-8633.

Geophysical: magnetically extremely quiet 2 Kp0o, 3 Kp0+;
ionospheric F region relatively quiet.

Events: minor: Ho (R-8629) 0311 with cm solar burst, SID and
DSD, (R-8631) 1531 with m solar burst; (R-8637) 1837; (R-8632)
2329; m type II at 0214; m, dm and cm solar burst at 0900;

dm solar bursts at 1030 and 1335; DSD (R-8629) 0210; SDF and
EPL (S50E limb) 2320; solar x-rays 2343.

I
|



Highlights

1966 10 cm Sun- Geo- CMP of
June Flux spot mag. Region
S$ Sa No. Ap Number
28 98 1Ol 52 5 R-8355(4)
23)
R-8359
(826)
29 96 100 47 6
30 97 101 55 6 — R-8358(3)
quis)
R-8377
(S24)

Solar: no spot mag. obs. Mt. Wilson; spot group continues,
radio int. 32, 21 em radio noise and 1 subflare in R-8344;
spot continues and 4 subflares in R~8345 at W limb; spot
continues, xadio int. 9 and 2 subflares in R-8348; small
spot continues, radio int. 11 and 1 subflare in R-8358;
spot size decreasing, radio int. 18 and 21 em radio noise
in R+8361; spot continues and radio int. 6 in R-8359; 1 sub-
flare in R-8362; minor events: Hy (R-8345) 1404E, (R-8361)
0658E and 1535E; active dark filament (R-8344) 0000; dark
surges (R-8344) 0007, (R-8348) 0150; cm. solar burst 1510.

Geophysical: continued magnetically quiet especially 0600-
1500 Kp0+; wisps of noctilucent clouds visible over Western
Europe in latitudes 55° and 58° between 2140-0155.

Solar: spot continues, radio int. 17, 21 cm radio noise and
2 subflares in R~8344; spot continues and radio int. 13 in
R-8348; small spot growing, radio int. 21 and 4 subflares
in R-8358; spot gone, radio int. 15, 21 em radio noise and
1 subflare in R-8361; spot continues, radio int. 6 and
1 subflare in R~8359; minor events: cm. solar bursts at
1700 and 2055.

Geophysical continued magnetically quiet; weak display
noctilucent clouda visible over Western Europe in
latitudes 55° and 57° between 2315-0115.

Solart no spot mag. obs. Mt. Wilson; spot continues, radio
int. 12, 21 em radio noise and 2 subflares in R-8344 at
W limb; spot growing, radio int. 11 and 4 subflares in
R+8348; spot continues, radio int. 18 and 1 subflare in
R-8358; radio int. 14 and 21 cm radio noise in R-8361;
spot growing with radio int. 6 in R-8359; 2 subflares in
R-8362; radio int. 7 in R-8377; mimor events: Hy (R-8348)
O115 and 0227 with cm. and m. solar bursts; (R-8377) 0220;
(R-8362) 0352 with cm, soler burst; cm. and m. solar
bursts 0635.

Geophysical: continued magnetically quiet; SL~SWF and SPA
at 0227; SPA at 0636; SEA at 0718; brilliant display
noctilucent clouds visible over Western Europe during the
whole night in latitudes 52° and 57°.



CMP of
Region
Number

Highlights

1966 10cm Sun- Geo.

Aug. Flux spot mag.
s No. Ap

26

(Cont 'd)

27 131 133 90 5

28 130*133* 844

29 227 1330 89) 13

* adjusted for burst

R-8459 (2)
(N26)

R-8460 (3)
033)

R-8461 (183)

N23)

spot continues, radio int. 14 and 5 subflares in R-8459;
moderate green corona at NE limb; major event: Ha (R-8461)
impt. 2n, 1728-1955 with cm. and m. solar bursts; type IV,
7.6-41 MHz, 1758-1858; type IV, 21-41 MHz, 1858-2130; minor
events: Ha (R-8461) 2146 with flare-associated disappearance
of filament; m. noise storm 0650-1505; active dark filament
(R-8459) 1848. ,

Geophysical: slight magnetic activity 0000-0900, quiet there-
after; G-SWF, SPA, SES and SFD at 1800; SFD at 2030; SCNA,
SEA, SPA and SES at 2145; ionospheric F region relatively
quiet; at 0000-0500 aurora overhead at $= 60° over North
America

Solar: small spot decreases in size, radio int. 40, 21 cm
radio noise in R-8460; By spot group continues, radio int.
100, 21 cm radio noise and 11 subflares in R-8461; spot
group increases in size, radio int. 26 and 10 subflares in
R-8454; no spot, radio int, 12, 21 cm radio noise in R-8447;
small spot continues, radio int. 10 and 1 subflare in R-8467;
spot continues, radio int. 9 and 5 subflares in R-8459;
minor events: Ha (R-8454) 1855 with cm. and m. solar bursts;
m. noise storm 1140-1500; cm. solar burst 1300-1535 and cm.
and m, solar bursts 1430; cm. and m, solar bursts 2000-2145;
active prominence region (N38 W limb) 0416.

Geophysical: continued magnetically quiet; G-SWF, SPA and
SES at 1608; SL-SWF, SEA, SPA and SES at 1855; G-SWF, SEA,
SPA and SES at 2020; at 0000-0500 aurora overhead at
# = 60° over North America,

Solar; small spot decreases, radio int. 18, 21 cm radio
noise in R-8460; By spot group continues, radio int. 50,
21 cm radio noise and 10 subflares in R-8461; spot group
continues, radio int. 40 and 7 subflares in R-8454; no
spot, radio int, 17, 21 om radio noise in R-84473 no spot,
1 subflare in R-8474; spot continues, radio int. 9 and 2
subflares in R-8459; radio int. 8 and 4 subflares in R-8467;
spot appears, radio int. 9 in R-8473; major events: Hy
(R-8461) impt. 2b, 1522-1945D with cm., m., and dm. solar
bursts and dark surge and partial disappearance of fila-
ment; type IV, <50- >320 MHz, 1527-1640; type II, 11-41 Miz,
1530-1547; type IZ, <25- >150 Miz, 1531-1548; type IV,
11-41 MHz, 1547-1634; type IV, 21-41 MHz, 1634-1749; minor
events: Ha (R-8454) 0508, 0946 with cm. solar burst and br.
surge, 1150 with cm., m., and dm. solar bursts, 1637 with
cm. solar burst, and 1755, (R~8461) 0900E, (R-8447) 1241;
m, noise storm 0550-1445; m. noise storm 0700-1200 and cm.
noise storm 1100-1510; cm. solar burst 1100-1110; cm. and
m, solar bursts 1255-1520; br. surge (R-8454) 1915, 2035,
and 2215; slow disappearance of filament (N34 W18) 2120.

Geophysical: continued magnetically quiet; G-SWF at 0046;
SEA and SES at 0303; SL-SWF and SPA at 0510; SEA at 1137;
SCNA and SEA at 1155; SL-SWF and SCNA at 1457; S-SWF, SCNA,
SEA, SPA, SES and SFD at 1523; SEDs at 1637, 2050 and 2210;
SPA and SFD at 2131,

Solar: small spot continues, radio int. 20, 21 cm radio
noise in R-8460; spot group combines into one spot, in-
creases in size, radio int. 68, 21 cm radio noise and 5
subflares in R-8461; spot group increases in size, radio
int. 20 and 3 subflares in R-8454; no spot, radio int. 15

- 48 -



Day 10 cm Sun- Geo- Iono- GHP of Highlights
Flux Spot mag, Index Region
S_No. Ap Ip Ja Number
1967 June
17108 «657 «90 0 Solar: small spot continues with radio int. 8 in R-8852; four spot
groups with radio int, 22 and 14 subflares in R-8854; small spot
continues with radio int. 10 in R-8858,
Geophysical: very slight magnetic activity, increasing to slight
later in the day.
Events: minor: Ha (R-8854) 0125, 0245 with BSD, 0704, 1049 with
cm, dm, m, and Dkm solar burst, 1107 with cm and m solar burst,
1944, 2121 with cm and dm solar burst and SID, and 2141; cm and
dm solar burst 1510,

wll 64 4 OO Solar: spot continues with radio int. 8 in R-8852; spot groups
continue with radio int, 24 and 11 subflares in R-8854; small
spot continues with radio int. 9 in R=8858; small spot with 1 sub-
flare in R-8860; br. green corona NE limb,

Geophysical: slight magnetic activity until 0300, becoming quiet
thereafter, 3 Kp 0+; very faint noctilucent veil N53-55 W04-04.5,
0015-0200 and faint bands and billows N55~56 W03.5-04.5, 2350-
0200,

Events: major: Ha (R-8854) 0120-0154, impt. 2b with cm and dm
solar burst and SID; minor: Ha (R-8854) 0101, 1032 with em and
dm solar burst, 1308 with cm and dm solar burst and SID, 1552 with
cm and dm solar burst, m and Dkm type II, DSD and SID; lx (R-8846)
0720; Ha (R-8860) 1556 and 2308; Ha (R-8863) 1808 with cm, dm,
and m solar burst; cm solar bursts 1020-1905; dm solar bursts 1030-
1915; m solar bursts 0835-1145; APR (N41 E limb) 1300-2400,

wis 67 5 00 Solar: spot continues with radio int. 6 in R-8852; spot groups con-

tinue with radio int, 21 and 9 subflares in R~8854; small spot con-
tinues with radio int. 8 and 3 subflares in R-8858; small spot
continues in R-8860; radio int, 24 and 5 subflaces in R-8863.

Geophysical: continued magnetically quiet, 3 Kp 0+, though some
slight activity 1200-1800; ionospheric F region relatively quiet.

Events: minor: Ha (R-8863) 0015; cm, dm, m, and Dim solar burst
1225 with APR (N38 E limb) 1220-2310; cm solar burst 1720; m solar
bursts 0855-1325; APR (N33 E limb) 1730-2030,

20117 84 4 0 O R-8852(2) Solar: spot continues with radio int. 7 in R-8852; spot groups con-
(819) tinue with radio int, 18 and 9 subflares in R-8854; spot continues
with radio int, 8 and 1 subflare in R-8858; small spot with 1 sub-
flare in R-8860; spot at E limb with radio int. 29 and 8 subflares
in R-8863; 2 subflares in R-8862.

Geophysical: continued mostly magnetically quiet; ionospheric F
region relatively quiet; extensive and bright display of veil,
bands, billows, and whirls in noctilucent clouds N52-60 from Central
Europe to West Atlantic, 2300-0300.

Events: minor; Ho (R-8863) 1052; cm, dm, m, and Dkm solar burst 1225;
dm and Dim solar burst 0955; cm and dm solar burst 2205; cm solar
burst 2010 with SID,

2llg 7 4 00 Solar: spot continues with radio int. 6 in R-8852; spot groups de-
creasing in size with radio int. 15 and 2 subflares in R-8854;
visible spot gone but radio int. 7 and 4 subflares in R-8858; small
spot in R-8860; spot group continues with radio int, 31 and 7 sub-
flares in R-8863; 5 subflares in R-8867; mod. green corona NE and

- 117 -



1966
Sep.

10 cm Sun- Geo-
Flux spot mag.
S__Sa__No. Ap

CMP of
Region
Number

Highlights

15 111112 38 «20

16 123125 57 10

17° («12812976 9

18 141 143° 83 3

(-8510)
(N07)

R-8501
(827)

(R-8511)
nig)

Solar: spot group increases in size, radio int. 29, 21 em
radio noise and 5 subflares in R-8496; 8y spot group con-
tinues, radio int. 35, 21 cm radio noise and 6 subflares
in R+8505; moderate green corona at NE limb; minor events:
HY (R-8505) 1828E with active dark filament; active dark
filament (R-8497) 0000 and 1610.

Geophysical: slight-to-moderate magnetic activity continues;
S-SWF, SCNA and SPA at 0100; SPAs at 0253, 0434 and 0552;
SFD at 1819; S-SWF, SCNA and SPA at 2030; cosmic ray decrease;
glow of aurora on horizon visible over Western Europe to
latitude $ = 60° between 2050 and 0100 (Sept. 16).

Solar: spot group increases in size, radio int. 19, 21 cm
radio noise and 3 subflares in R-8496; 8y spot group con-
tinues, radio int. 48, 21 cm radio noise and 9 subflares
in R-8505; small Sy spot group appears, radio int. 12, 21
cm radio noise and 10 subflares in R-8509; moderate green
corona at NE limb; minor events: Hy (R-8505) 0120 with cm.
solar burst and active dark filament, 1615 with cm. and m.
solar burst, dark surge and sudden disappearance of fila-
ment; HY (R-8509) 0944 with cm., m., and dm. solar bursts,
1040E, 1612 with cm. and m, solar bursts and br. surge,
and 1740 with em. and m. solar bursts; HY(N27 E limb) 2118
with eruptive prominence; type II, 24-41 MHz, 1815-1820;
type II, 21-41 MHz, 1827-1836; type II, 20-31 MHz, 1838-
1843; m. noise storm 0730-1500; cm. solar burst 0425-0445;
em., m., and dm. solar bursts 0700-0950; sudden disappear-
ance of filament (R-8505) 0512E; dark surges. (R-8505)
0822E, (R-8509) 0905E; active dark filaments (R-8506)
0958E, (R-8497) 2108, (R-8505) 2108; br. surge (R-8509)
10008.

Geophysical: slight magnetic activity 0000-0300 and 1800-
2400, otherwise quiet; S-SWF and SPA at 0121; SPAs at
0953 and 1625; G-SWF, SPA and SFD at 1800.

Solar: spot group increases in size, radio int. 22, 21 cm
radio noise and 4 subflares in R-8496; spot group increases
in size, radio int. 24, 21 em radio noise and 13 subflares
in R-8505; Y spot group increases in size, radio int. 31,
and 5 subflares in R-8509; moderate green corona at NE
limb; major events: HY (R-8496) impt. 2n, 0935E~1239D with
cm., m., and dm. solar bursts; minor events: Hx (R-8509)
0831 with cm. solar bursts; cm. and m. noise storms 0815-
1355; m. solar bursts 1255-1425 and 2045; cm. and m. solar
bursts 2325-0035; active filament region (R-8509) 0345E,
active dark filament (8505) 2105.

Geophysicai: slight magnetic activity continues 0000-0900,
quiet thereafter; SPAs at 0350 and 0950; ionospheric F
region relatively quiet.

Solar: spot group continues, radio int. 25, 21 em radio
noise and 4 subflares in R-8496; spot group continues,
radio int. 30, 21 cm radio noise and 9 subflares in R-8505;
spot group increases in size, radio int. 40, 21 cm radio
noise and 8 subflares in R-8509; small spot appears, radio
int. 7 in R-85°9; small spot appears, radio int. 13 in
R-8497; br. green corona at NE limb; radio int. 15 on E
limb in R-8513; radio int. 6 on E limb in R-8514; minor
events: H¥ (R-8509) 1450B with cm. and m. solar bursts;
type II, 75-230 MHz, 1500-1513; type II, 24~41 MHz, 1505~
1513; type II, 22-41 MHz, 1526-1538; om. and m. solar
bursts 0315-0405 and 0750-1015 and 1858-2015; active dark
filament (R-8505) 0131 and 0605.

Geophysical: continued magnetically quiet; G-SWF, SCNA, SPA
and SES at 0400; SEA, SPA and SES at 0850; S-SWF, SCNA, SEA,
SPA, SES and SFD at 1450; ionospheric F region relatively
quiet.

- 53 -



Sept. 4, 1967 Our Ol O23 OSS St

FLARES
>
3 [lam
2 Dn

S10,

XeRays n
Te [_Ke. z ES = ry 2 ie 1 = lo}tp
« [se 0 JI

cy w cs & @ 5 is a a

139 10 en flux
wi ke

GHP Region 6960 527(2)
Rogen 6957 27(2)

Sept. 5, 1967 (DUT Ol 203k

FLARES

Bursts

6 5 6 8 te 5 ie a a

126 10 em flux
125 Re One of the five

pnettcally quiet days; bright green corona observed 7 days later on MW Lieb.

sept. 6, 1967 (ur 0-03 OH Tg

FLARES

om
ry
i
Dim 4
Si0.

Rays

Be [ke i 7 e is rs is = E
é [se

Bursts

0 B 6 cc) 5 8 a
en tux
tae ke one of ten sapnetically quiet days; fonoepherie F cegion relertvely autet.
GHP Region 0961 w200269)
fegton #962 S19
token waco?
1ste9 tap)
1ses9 5220852

Sept. 7, 1967 Mur Ol 02 OS OOS

FLARES

on
‘der
m L im
km
3D,
X-Rays
fp [Ke
9 [Tse

Bursts

= ‘i 2 as 2 is. 1p
iz. rr cr Re }10

126 10 cw flux

109 Re

CHP Region 8963 N22(162)
16495 123¢op)1

- 138 -



1966 10 cm
Aug. Flux
s Ss,

Sun- Geo-
spot mag.
fa No. Ap

CME of
Region
Number

Highlights

29
(Cont 'd)

30 124 126 76 82

31 119 121 66 23

R+8467(3)
N25)

in R-8447; no spot, radio int. 10, 21 cm radio noise in
R-8466; small spot appears, 10 subflares in R-8474; spot
continues, radio int. 11 and 1 subflare in R-8459; no spot,
radio int. 6 and 1 subflare in R-8479; spot continues, radio
int. 6 in R-8473; major event: Hx (R-8454) impt. 2n, 2351E-
2351D; type IV, 21-41 MHz, 2032-2258; minor events: HY
(R-8454) 0313 with br. surge, 0730E, 2058, and 2214, (R-8461)
0533 with cm. and m. solar burst, 1318 with cm., m., and dm.
solar bursts, and 2021, (R-8474) 0726 with disappearance of
filament, and 0830 with disappearance of filament, (R-8479)
1437 with cm. and m. solar bursts and active prominence region
and br. surge, and 1645E with br. surge; cm. noise storm
0800-1420 and m. noise storm 2100-0100; cm., m., and dm.
solar bursts 0800-1100; cm. and m. solar bursts 1200; type
II, 20-41 Miz, 1319-1324.

Geophysical: magnetically quiet until preliminary sudden
commencement at 1315, moderate activity thereafter; G-SWF,
SCNA and SPA at 0536; S-SWF, SCNA, SEA, SPA, SES and SFD
at 1315; SCNA at 1531; SPA at 1720; at 2000-2100 auroral
homogeneous band overhead at ¢ = 61° over U.S.S.R.

Solar: small spot continues, radio int. 14, 21 cm radio
noise in R-8460; 8 spot continues, radio int. 58, 21 om
radio noise and 9 subflares in R-8461; no spot, radio int.
16 and 3 subflares at W limb in R-8454; no spot, radio int.
18 on W limb in R-8447; spot continues, radio int. 16 and
2 subflares in R-8459; spot continues, radio int. 7 in
R-8473; major event: Ho (R-8461) impt. 2n, 1450-1621 with
cm. and m. solar bursts and dark surge and sudden disap-
pearance of filament; minor events: Ha (R-8461) 0212 with
active dark filament, (R-8454) 0855; m. noise storms 0S15-
1450 and 2100-0055; cm. solar bursts 0025-0330 and cm., m.,
and dm, solar bursts 1105-1230; br. surge (S18 W Limb) 0606.

Geophysical: moderately sevewz-magnetic storm with prelimi-
nary sudden commencement at 1112, 1 Kp 7- and 2 Kp 7+;
8~SWF and SPA at 0047 and 0232; SCNA at 1335; SEA at 1443;
SL-SWF, SCNA, SEA, SPA, SES and SFD at 1450; a Forbush cos-
mic ray decrease begins about 1200 and continues for 9 days;
ionospheric F region disturbed with auroral absorption at
high latitudes; at 0100 auroral short rayed arc overhead at
é= 59°, at 1800 short rays at $= 54° and homogeneous band
at $= 57°, at 1900 homogeneous arc at ¢ = 58°, at 2000 br.
striated band at ¢ = 57°, at 2100 homogeneous band at ¢ = 57°,
at 2200-2300 striated band at ¢ = 57° and at 2300 homogeneous
patches at ¢ = 57° over U.S.S.R.; at 0000-0500 aurora over-
head at ¢ = 60° over North America; rays visible along the
horizon in latitude ¢ = 60° over Western Europe from 0050
to 0250.

Solar: no 9.1 cm obs.; 6 spot increases in size, 21 cm radio
noise and 11 subflares in R-8461; spot continues, 2 sub-
flares in R-8459; major event: He (R-8461) impt. 2b, 0036-
0347 with cm. solar bursts; minor events: Ha (R-8461) 0002E,
02S0E with cm. solar burst, 0604E, 1104E with dm. solar burst
and 1835E with cm. and m. solar bursts; m. noise storms 0630-
1455 and 2100-0200; em., m., and dm. solar bursts 0730 and
0915-1130 and 1310-1450.

Geophysical: magnetic storm, now moderate, continues; G-SWF,
SCNA and SPA at 0038; G-SWF, SPA and SFD at 1831; SES and
SFD at 1904; SPA at 2230; ionospheric F region slightly
disturbed; auroral medium length rays overhead at ¢ = 57°
over U.S.S.R.; at 0000-0500 aurora overhead at ¢ = 60° over
North America.

- 49 -



Day 10 cm Sun~ Geo~
Flux spot mag.

S$ No.

AR.

Tono-
Index
Ip Ia

CMP of
Region
Nunber

Highlights

1967 January
12

(Cont'd)
13 143 86
14 140 85
15 131 56
16124 56

26

61

9

(0) 2

R-B641(5)
(N25)

R-8647
(823)

Geophysical: magnetically extremely quiet, 2 KpOo, 4 Kp0+; iono-
spheric F region relatively quiet.

Events: minor: Ho (R-8631) 0231E with cm solar burst, Dkm and m
type IIs, SID and solar x-rays; (R-8647) 1120E with dm solar
burst; SID with solar x-rays at 1807; BSL (R-8631) 0330.

Solar: R+8631 over W limb; no spot, radio int. 17 and 2 subflares
in R-8632; spot becomes very small, radio int. 35 and 4 subflares
in R-8637; spot group decreases in size, radio int. 33 in R-8639;
spot group continues, radio int. 23 and 2 subflares in R-8638;
spot group continues, radio int. 15 and 3 subflares in R-8644;
spot group, relatively large, continues, radio int. 24 and 12 sub-
flares in R-8647; no spot, radio int. 6 in R-8641.

Geophysical: slight magnetic activity until preliminary sc at 1202,
storm moderately severe; cosmic ray decrease of about 3% at Deep
River; aurora overhead in U.S.S.R. to ¢ = 53° 1400, $ = 56°
1800-2100 and $ = 59° 2100-2400; occasionally brilliant and very
active display visible all night in Western Europe with homo-
geneous arc overhead sometimes as far south as ¢ = 60° becoming
a rayed arc later with intense flaming and visible as glow south
of @ = 54° the night of Jan. 13-14; ionospheric F region disturbed
in some sectors.

Events: minor: Ha (R-8632) 1819 with cm solar burst; preliminary
sc at 1202; ADF (R-8641) 1507-2359; EPL (R-8631) 1710-1905.

Solar: spot continues, radio int. 29 and 4 subflares in R-8637;
spot group continues, radio int. 25 and‘3 subflares in R-8639;
spot group decreases rapidly in size, radio int. 16 in R-8638
as region goes over W limb; spot group increases in size, radio
int. 17 in R-8644; spot group continues, radio int. 30 and 4
subflares in R-8647; spot group appears, radio int. 9 in R-8648;
no spot, radio int. S$ and 4 subflares in R-8649; mod. green
corona NE and SW limb; br. green corona NW limb.

Geophysical: magnetic storm severe but ending about 1200; Forbush
decrease continues; aurora overhead in U.S.S.R. to ¢ = 59°
0000-0400, overhead in North America to @ = 50° 0000-0500;
ionospheric F region very disturbed with auroral blackout at
high latitudes.

Events: major: Ho (R-8639) impt. 2n 2317-0011; minor: Ha (R-8638)
0327 and at 1027 with Dim, m, dm and cm solar burst and solar
x-rays; (R-8649) 1058 and 1637 with SID; (R-8644) 1738 with dm
and cm solar burst and SID.

Solar: R-8637 and R-8639 over W limb; spot group continues, radio
int. 14 and 6 subflares in R-8644; spot group increases in size,
radio int. 21 and 14 subflares in R-8647; spot group increases
in size, radio int. 8 in R-8648; no spot, radio int. 8 in R-8649;
mod, green corona NE, SE and SW limbs; br. green corona NW limb.

Geophysical: slight magnetic activity; recovery from Forbush de-
crease by end of day.

Events: minor: m type II and om solar burst at 03243 m and Dkm
type II at 2321; APR (R-8638) 0821-1546, (R-8650) 0838-1023;

DSD (R-8647) 1632 and 1955; ADF (R-8647) 2038-2347.

Solar: spot size decreases, radio int. 12 and 1 subflare in
R-8644; spot group begins 6-day gradual decrease, radio int.
20 and’ 7 subflares in R-8647; spot group continues, radio int.
8 in R-8648; no spot yet, radio int. 18 and 4 subflares in R-8650:

() estimated from less than 24 hours data

- 78 -



Day 10 em Sun- Geo-~
Flux spot mag.
S No. Ap

Iono- CMP of
Index Region
Ip Ia_ Number

Highlights

1967 February
23.152 84 14

24 166 100 4

25 163% 106 15

26:177* 123° 1k

* adjusted for burst

0 4

0 2

0 2  R-8703(3)
(825)

Solar: spot continues, radio int. 19 and 4 subflares in R-8695; spot
in R-8694; spot size decreases, radio int. 14 in R-8698; spot size
increases, radio int. 10 and 2 subflares in R-8693; spot continues,
radio int. 12 in R-8703; large spot group increases in size becom-
ing S-type, radio int. 78 and 16 subflares in R-8704; mod. green
corona NW Limb.

Geophysical: very slight magnetic activity increasing to slight-
to-moderate activity 0900-2100; weak auroral display over Western
Europe visible to @ = 59° between 1835 and 2100; ionospheric F
region slightly disturbed with some auroral blackout at high
latitudes.

Events: major: Ha (R-8704) impt. 2b 0829-0857 with SID, solar
x-rays, and Dkm, m, dm and cm solar burst, impt. 2n 1143-1218
with solar x-rays and m, dm and cm solar burst; minor: Ha (R-8704)
0053 with SID, solar x-rays and m, dm and cm solar burst and m type
II, 0242, 1417E, 1625 with SID and dm and cm solar burst, 1701 with
SID; ADF (R~8704) 0838; DSDs (R-8704) 1618 with m type II, dm and
cm solar burst, solar x-rays and SID, and 2242 with cm solar burst
and SID; SIDs at 0547 with solar x-rays, 1554, 1728, 1806 and 1945
all with cm solar bursts.

Solar: spot continues, radio int. 19 and 3 subflares in R-8695;
spot in R-8694; spot continues, radio int. 13 in R-8698; spot
gone in R-8693; spot continues, radio int. 18 in R-8703; large
spot group increases in size, radio int, 94 and 28 subflares in
R-8704,

Geophysical: mostly magnetically quiet.

Events: major: Ha (R-8704) impt. 2b 1900-1944 and 2341-0012 both
with SID and cm solar bursts; minor: Ha (R-8704) 0609 with SID,
solar x-rays and dm and cm solar burst, 2110; SIDs at 1515, 1720,
1947; Dkm, m, dm and cm solar burst at 1430; dm and m burst at
1805; DSD (R-8704) 0800; APR (R-8709) 1356.

Solar: spot continues, radio int. 17 and 4 subflares in R-8695;
spot in R-8694; spot continues, radio int. 11 in R-8698; spot
continues, radio int. 14 and 2 subflares in R-8703; large spot
group continues to increase, becoming extremely large in size,
radio int. 113 and 16 subflares in R-8704.

Geophysical: slight-to-moderate magnetic activity 0300-2400;
ionospheric F region slightly disturbed in some sectors.

Events: minor: Ha (R-8704) 0735 with cm burst, 0926 with dm
and cm burst, 1131 with Dkm and om burst, 1322 with dm and cm
burst, 1509 with DSD, 1806 with SID and dm and cm burst, 1846
with SID, solar x-rays, dm and em solar burst and Dkm type II
and IV, 1950 with SID, solar x-rays and cm burst; SID at 1620
with cm burst.

Solar: spot decreases in size, radio int. 17 and 1 subflare in
R+8695; R-B694 goes over W limb; spot gone, radio int. 11 in
R-8698; spot continues, radio int. 12 in R-8703; very large
spot group continues, again 6-type radio int. 92 and 14 sub-
flares in R-8704; small spot group appears, radio int. 15 and
4 subflares in R-8706; small spot appears, radio int. 9 and 2
subflares in R-8707; no spot, radio int. 15 in R-871l.

Geophysical: slight~to-moderate activity 0000-0600, subsiding
to very slight activity; ionospheric F region slightly dis~
turbed in some sectors.

- 88 -



1966
July

10 cm
Flux spot mag.
SS, No. Ap

Sun- Geo-

CMP of
Region
Number

Highlights

29 129 133 76 5

30 124 128 63 6

31 121125 66 5

August

L 122 126 78 6

2 116 120 62 1

(R-8427)
(N25)

R-8413(2)
(N36)

R-8414 (2)
(N25)

Solar: spot size decreasing, radio int. 29 and 21 cm radio
noise in R-8405; spot size decreased, radio int. 9 and 1
subflare in R-8408; spot continues, radio int. 13 and 21
cm radio noise in R-8413; spot continues, radio int. 45,

21 cm radio noise and 13 subflares in R-8414; spot with
radio int. 23, 21 em radio noise and 8 subflares in R+8415;
major event: Hr (R-8415) impt. 2£, 0405E-0608D; minor
events: Hy (R-8414) 0500 and 0728E with cm. solar burst,
(R-8415) 06368 with br. surge, and 1121E; cm. solar burst
1635-1655.

Geophysical:
after.

slight magnetic activity 0000-0300, quiet there-

Solar: spot continues, radio int. 31, 21 cm radio noise and
4 subflares in R-8405; spot continues with 1 subflare in
R-8408; spot continues, radio int. 18 and 21 cm radio noise
in R-8413; spot continues, radio int. 34, 21 cm radio noise
and 8 subflares in R-8414; spot continues, radio int. 33,
21 cm radio noise and 4 subflares in R-8415; minor events:
By (R-8415) 2356R; cm., m., and dm. solar bursts 1040-1445;
dark surges (R-8414) 0741 and 0835E; active filament region
(R-8414) 0758E,

Geophysical: continued magnetically quiet except slight acti-~
vity 0300-0900.

Solar: spot decreasing, radio int. 28, 21 cm radio noise and
2 subflares in R-8405; spot continues in R-8408; spot con-
tinues, radio int. 21 and 21 cm radio noise in R-8413; spot
size decreases, radio int. 33, 21 cm radio noise and 3 sub-
flares in R-8414; spot continues, radio int. 28, 21 cm radio
noise and 3 subflares in R-8415; spot, radio int. 13 and 3
subflares in R-8422; moderate green corona on NE limb; minor
events: Hy (R-8422) 08195.

Geophysical: continued magnetically quiet; moderate display
noctilucent clouds seen over Western Europe between 55° and
56.5° from 2230 to 0115.

Solar: spot growing smaller, radio int. 24 and 21 cm radio
noise in R-8405; spot goes over W limb in R-8408; spot con-
tinues, radio int. 19 and 21 cm radio noise in R-8413;

§ spot, radio int. 33, 21 cm radio noise and 1 subflare in
R-8414; spot size decreasing, radio int. 18, 21 cm radio
noise and 3 subflares in R-8415; By spot, radio int. 18

and 21 cm radio noise in R-8422; minor events: HY (R-8415)
1100 with cm. solar burst and active dark filament, (R-8413)
1810 with cm. solar burst; m. noise storm 0600-1510; active
dark filament (N32 E55) 0949.

Geophysical: slight magnetic activity 0000-0600, quiet there~
after.
Solar: spot continues, radio int. 19 and 21 em radio noise

in R-8405, spot continues, radio int. 23 and 2 subflares
in R-8413; g spot, radio int. 29 and 21 cm radio noise in
R-8414; spot continues, radio int. 28, 21 cm radio noise
and 7 subflares in R-8415; spot continues, radio int. 19
and 21 cm radio noise in R-8422; minor events: cm. solar
burst 2121; active prominence region (N58 E limb) 0411.

Geophysical: magnetically extremely quiet, 5 Kp 0o, 2 Kp 0+;
SCNA and SED at 2122; ionospheric F region relatively quiet.

- 43 -



August 1967

na0"
WA /. 398
426
a aM
sis 475 50S
0 pam
71s
20° a5 55M “49M Sam
538 43M
sac’
30 28 ra a4 22 2 18 16 4 2 10 8 6 4 2
Day of Central Meridian Passage
puguot 1, 1967 Dur) Hae
FLARES snjos
10/01 infos — aL 1/02
Ts 1 1 n ri
$ [Com n
5 om LE Toles store 21 z
© [0K ia
0) n z
pa a P z |i
aK rE OE = Te = a 7% >
2 bse on
8 [F @ 2 5 8 a
122-10 en flux
139 te one of the five eagnetically quiet days; ionoapheric F rogion relatively quiet: bright green corona observed 7 days earlier
GHP Region #917 HDL on SE Unb and 7 days later on WW Linh.
Repton €919 H12(9)
Teese N11G@n)4
16445 1206p)
pogose 2, 1967 00 url 03 OST Bes
FLARES. tans
10l0 — tala sass = ta/a2 = w/t ala’
Te ni ni ran ri
3 Cam
5 [cm 1
& orm
S10 r
KRays
Ap [Kp OF OF 99. 1. rs Ot. OF it lp. |tp
[ose jo }io
o 8 iy cc) we cy 8 a Ea
162 10 cn Cox
126 te One of the five magnetically quict days,
augue 3, 1967 © urd 03 HH me
FLARES ——nyos
nls
Ls ran
3 [Com :
3 [oo alae St =
© [km
S10. z ra
Rove r
7 T_Ke te & & co ra ry roy rs 19
3 J se ors
0 8 6 CF i 5 iy f

159 10 em Flux

13 Be

GHP Region $918 528
Region (8924) 112
Region 6914 521(263)
164AS. $29(8)3
(16442 $21¢@p)2

One of the five magnetically quiet days; tonospherte F region relatively quiet.

- 129 -



‘Day 10 cm Sun- Geo-
Flux Spot mag.
S__No, Ap

Tono- CMP of
Index Region
Ip Ia_Number

Highlights

1967 May
31

(Cont'd)

1967 June
01170 «138 4

02 154 118 9

03146 «4210207

%* adjusted for burst.

0 0 R-8829
(s17)

0 1 R-8830(2)
(N19)

Events: minor: Ha (R-8831) 2104 with cm solar burst and SID; cm,
dm, and m solar burst 0735; cm and dm solar burst 1635; cm solar
bursts 0400-1200, 1740, and 2015-2215; SID at 0210, 0425, 0455,
and 1840; APR (R-8818) 0600-1600 and BSL (R-8818) 1325-1330,

Solar: radio int. 37 and 1 subflare in R-8818 at W limb; radio int.
22 in R-8819 at W limb; spot groups continue with radio int. 26
and 4 subflares in R-8821; spots continue with radio int. 24 and
6 subflares in R-8824; spot groups decrease with radio int. 26
and 1 subflare in R-8829; small spot continues with radio int. 20
in R-8830; spot groups continue with radio int. 72 and 19 subfleres
in R-8831,

Geophysical: magnetically quiet, 1 Kp 0+; faint noctilucent clouds
N56.5 WO7, 0005-0100.

Events: minor: Ha (R-8831) 0958 with dm and m solar burst, 1153,
and 1451 with cm and dm solar burst; Ha (R-8824) 1552 with cm and
dm solar burst; cm, dm, and m solar burat 0705 with solar x-rays;
cm solar burst 0445 with SID; cm and dm solar burst 0015 with SID;
dm, and m solar burst 1000 and 1120 with m solar burst; cm solar
bursts 1440-1810 and 2135-2350, dm solar bursts 0630-1130 and
1350-1650, m solar bursts 0410-1430; SID at 1920; APR (R-8818)
0600-1510 and 1645-2400D, BSL (R-8818) 1325-1350 and 2300-2330.

Solar: spot at W limb with radio int. 16 in R-8821; spots decreasing
with radio int. 17 and 4 subflaxes in R-8824; spot continues with
radio int. 32 and 4 subflares in R-8829; small spot with radio int.
10 in R-8830; spot groups, one By, continue with radio int. 78 and
18 subflares in R-8831.

Geophysical: continued magnetically quiet until 0900, increasing to
slight activity thereafter.

Events: minor: Ha (R-8824) 0057 with dm solar burst, 0747, 0847
with cm and dm solar burst; Ha (R-8821) 0828 with cm, dm, and m
solar burst, and 1259; Ho (R-8831) 0843 with cm and dm solar burst,
1048 with m solar burst, and 1633 with cm solar burst; om solar
bursts 0020, 1130-1950 and 2245-2400; dm solar bursts 1205-1955;

m solar bursts 0945-1515; solar x-rays 0155, 0655, and 1620 with
cm and dm solar burst; SID at 0345, 1430 with dm and Dkm solar
burst, 1605, 1710, 2055 with cm solar burst and 2305; APR (N32
E limb) 1910-2225,

Solar: spots continue with radio int. 18 and 9 subflares in R-8824;
spot continues with radio int. 20 and 2 subfleres in R-8829; small
spot with radio int. 10 in R-8830; spot groups growing with radio
int. 85 and 28 subflares in R-8831; 1 subflare in R-8837; 1 sub-
flare in R-8838.

Geophysical: mostly very slight magnetic activity, though occasional-
ly quiet.

Events: minor: Ho (R-8831) 0243 with cm solar burst, Dkm type IL
and SID, 0321 and 1114 with cm solar burst; Ho (R-8838) 0316 with
m solar burst; Ha (R-8829) 0758 with cm solar burst; Ha (R-8824)
0847 with m solar burst and 1054 with cm solar burst; cm, dm, and
m solar burst 0550 with solar x-rays and SID; em solar burst 0225

- 113 -



uly 4, 1967 0D Ur 2} OHS
FLARES
1e/75 — in/75
> ni mn ni
= Can n 1
§ [om A . A
© [ober
SID. ni
KRoys =
Ap [kp at = Ae 1 2 it 3a. o|ip
[ose K teoarey alte
00 e 5 oy i 5 ie a Fa
123 10 em flux
2 Re Paine bands and bright whirls {x roctilucent clouds 56°%, 12.5°E 2130-0130.

GHP Region 6875 S18
16413 N19(Op)S
16417 S21(BFY4
(16426) 13(BP)t

July 5, 1967 0 urd 02 eos oso

FLARES

—ase0 ab/an ab/75
> en
3 [Cee a :
© [Km we
S10 ni n

Xeaaye
pe [Ke = FY z te 3 se = a alip
16 [se Br

i) e 6 @ we 6 is a 7

120 10 em Flux
98 Re One of five woat megnetically disturbed days;
GHP Region 8876 w19(2) bends at 52°H over Hestora Atlantic 0400,
(16620) W11(8)2

os st ee

July 6 1967 00 ur OL 03

FLARES. an
= 1n/80~ 10/80, inl

Bursts
a

20 3 z 3p
1}I0

Ci) ® 06 co ia

113 10 en flux
Tonospharic F region slightly disturbed,

Re
GHP Region (8884) N05
16416 S16Cap)3

suly 7, 1967 yr 02 Sta

FLARES = 20/83 — 1n/s0
6) In/71 19 coleys0

}— 36/71

Bursts

S10)
X-Rays

es 2 2. 22 it O]Ip

2}10

T
alse
i 6 i) 2 5
12 10 en flux
70 Re Tonospherte F region disturbed.

GAP Region 8877 $19(2)
Regton 6881 N23
(aséa) $22¢ap)1

- 122 -



July 24, 1967 00 urd)

w

8 Mt

FLARES

srin/05~1n/ 907

20/05,

26/05,

lo

Wotaa, SESE

a

cy
171 10 em flux
90 Re

(4 Region $901 522(2)
Region 890% $08

a

3

July 25, 1967 OUT OF

FLARES:

1/9

10/05
=—1n/o5—

——/05
£198.

—injos
= th/0s

= 1n/05_— to/0:

om

£/95._= 1/0

Woise Store

n

i

B]Ip

i ]t0

189 10 ew flux
106 Re
HP 16438 s16(Bp)2

July 26, 1967 00 UT OL

w

[a

a

FLARES.

10/07
£707

— 19/07
25/05

10/9

— tn/o5_=~ 15/07

om

I Weise 88

tp

ofTo

a

194 10 em flux

16 ke

OP Region 8902 122(2)
Repion (0909 SOL
Region 8903 $26(3)

o

B 8 te

Joly 27, 1967 00 UT OL

FLARES

=1e/07
= Inyos

18/13 = 18/07

— 16/05
10/05

= 10/05

mn

Wolae stave

Bursts

os

2\Ip

‘oie
4

207

10 ea Fux
2 Re

8

One of ten magnetically quiet

®

@

127 -

4; woderately bright soctilucent banda, billows and whirls 56.

a

9-57.59, 3%=3,5°H 0145-0230,



ce. 30, 1967 Dur Ol 0 3ST tke
FLARES — Ks
}— 29734 1n/a? hh
> Lm Hl i an ai ni it
3 (om Hi it n an
§ [om t i poles Stora
2 [Oke
0) n
X-Rays
me _Ke = = = = ie cy = ie a]ip
as [se ‘ola
C7 cs) cn ® i & i ai a
162 10 ex flux Aurora overhead in X. Anerica at ¢ = 59° 0000-0500; aurora overhead in USSR at $ = 35° 1400-1900; tonospherte
132 Re F region disturbed.
GHP 9044 2016538 N22 Cap)1
9063 $16(2) (16548) S13 (8E)3
occ. 31, 1967 Dor | BS
FLARES —anlas
maar eer
7 Le ra ni
3 [Cam i an
§ ice i 1 Lat Lo
© [oe
S10 n
XR n i
7p [Ke ie & iss i = re a m O} 1p
7 [osc Or
0 cy 6 iJ @ 5 8 a 4
152 10 em flux
116 Bs
ome (9058) wis
NOVEMBER 1967
o iM 15¢ o 45* 90° 135° 180° y° 70°
na L 270 3 205° 270" 40H
SQ 70S
* \ res)
93M / \ Loa,
2 res 66M as 20°
2 826) i re) _J een NES _60S. ae
ta . O
g
3
2 ow 0
5 a seg hog
7553 Ys 87s
2 20
745 95 47M ass}
685, 53M
$40" “40°S,
02 28 NAN Fr a a i 2 a |
Doy of Central Meridian Passage
Nov. 1, 1967 OT O02 O08 05 ogo kk
FLARES
2 [=m
& [Tam te
3s
Ox
0)
X-Rays
cr
qo i oe i te ry ie, ie = altp
a}t0
& 9 @ it 5 6 Fy
12 10 cn Fue One of ten magnetically quict days
GHP 9045 $25(2) 16540 $28 «69)3
9046 K16(2) 16538 N16 (ap)5
26541 S18 (69)2
16547 N13 (@p)2
Mov. 2, 1967 0 OTOL SOT ttt
FLARES
afi t= tft
7 Le n Ti i
4 [Caer n n H
5 lm L a noise store
& [im
SID a rm
X-Rays 1
Ap |_Kp e is Be is = Fy e % T]to
ao [se a}to
i @ oe 8 it 5 iy FA %

143 10 om flux

122 Re

‘CHP 9053 $28 (16549) S26 (Bp)4
(26542) S19. (@p)4

Aurora overhead over USSR at ¢ = 59° 1800-2200; ionospheric F region disturbed in cone sectors; smelt proton
Increase on 30 MeV counter on Explorer 3% peaks about 1600.

151



Nov. 18, 1967 00 ur Oi 0203 ok 0508 tte te
FLARES
> Le n n
3 [Cam i
5 [cm ri
© [ker
S10 i
XRoys, 1
Bp [Ke F = x = r oF ca lo|tp
3 [se lo }Io
Ci 8 i oe id 5 ie a Ey
161 10 en flux ‘one of five sagnetically quiet days; Jonosphorie F region relatively quiet; br. green corona on NE Limb observed
136 Re T days earlter.
ow (26556) x17 (we)
Nov. 19, 1967 00 or Ol 02 0} Oe SOS
FLARES aeye — une
his 10/67
2 Lee n n 1 L
3 [Cem n
gts n
‘Dkim
S10 i n
X-Rays n
[Ke rE E iE = is Te }10
3 [ose jie
8 8 2 15 8 a a
171 10 em flux one of Five magnetiesily quiet days.
An Re
GH 9072 1242) 16565 N20 Bp
2083) 515
9075 517(3)
9073 NL&(3) 16557 woo &
16564 K19 Bp
Nov, 20, 1967 00 ur OL O23 40S oss tt
FLARES _ user
By 192 = 10/6
> Ls
3 [Cam
5 [om
© Fim
10
X-Roys
Bp [Ko Te rey o o a = ry 7 fate
2] 8 foto
0 & ts [J id 5 16 a a4
170 10 co flux one of five magnetically quiet days.
26 Re
Hoy, 21, 1967 00 ur Ol | 02 OF OS OG et
FLARES
> Lem ia n
& [Cam
3 im 2 noise storm ——)
& [om
SID. n L
X-Rays L n
Tp Kp tz my & te Te iE = = T]1p
5 [se Tsay a}io
8 6 Cy i 5 ie a
165 10 ca flux One of ten angnetically quict days; counte ray level decreases about 3Z starting very late in day and levels off
98 Re at ond of Nov. 22 followed by very slow recovery on or about Dec. 15; fonospheric F region relatively quiet.
Gir 9077 1716566 MIS 8
3076 S140)
(26567) 16 (ap)
Nov. 22, 1967 00 ur Ol 0230405 Ob geo to
FLARES
> Le i ian
$ [Cam L n
5 [> ‘noise store
® [bem
S10 i
¥Rays
Bp |_Ke. ccs * ig 22 = it es fate
33 [se atte
0 8 6 oy iz 5 18 ai 4

164 10 ex flux
92 Re

Tonospheric F region very disturbed.

155



WORLD DATA CENTER A

Upper Atmosphere Geophysics

REPORT UAG-4

ABBREVIATED CALENDAR RECORD
1966 -1967

J. Virginia Lincoln, Hope I. Leighton,
and
Dorothy K. Kropp

Aeronomy and Space Data Center
Space Disturbances Laboratory

Boulder, Colorado Sy
Prepared by Research Laboratories, ESSA, Boulder, Colorado
and published by iN

U.S. DEPARTMENT OF COMMERCE
ENVIRONMENTAL SCIENCE SERVICES ADMINISTRATION

ENVIRONMENTAL DATA SERVICE
ASHEVILLE, NORTH CAROLINA, USA 28801

1969

SUBSCRIPTION PRICE: $9.00 a year; $2.50 additional for foreign mailing; single copy
price varies.* Checks and money orders should be made payable to the Superintendent of
Documents. Remittance and correspondence regarding subscriptions should be sent to the
Superintendent of Documents, Government Printing Office, Washington, D.C. 20402.

*Price of this issue $1.25


OCTOBER 1967

Le 315° ‘a

180° 225°

135°

210°

Ag H

HAD".
50S

4a

KE TM

bd

585

15M 13

U

at

045

Lotitude

$35 £25,

if

ETS

22s
eM

eM) (oun)

les
tos|

/NZ

2957 oy \

e) 36s ( Pp

19S 9s 4
oO lS

Ne

Ws"

40°S

3 30-2 BT

oct. 1, 1967 Our th 0205

% 24 23 22 21 2 BT

Day of Centrol Meridion Possage
oS Tt a

FLARES

ite

vs

lo [To

229 19 en flue
cop 6959 13

oct. 2, 1967 Our Oo 2 OB

6 ® @ 5 ie

a

Be. green corona 7 days later on SW and NW Linb; fonospheric F region disturbed dn some aectors with cone

auroral blackout.

FLARES

—in/98

noise stor

Gursts

iC

o)Ip

3} ta

10 o

cy [J iz i ry

135 10 ex flux

77 Re

CHP (010) 818
9002, x26(3)

¢9009) $03
(9016) S10

vet.

(16518) $20 (@y)2
16510820 (ap)

3, 1967 00 ur O02

One of cen magnetically quiet days; aurora overhead at g = 57° in USSR 1200-1800; br, green and br. red corona

7 days earlier on SE lieb, br. green corona 7 days Later on MW and S¥ Liab.

oo 5 Ge

FLARES

cm

om
TM

Bursts

km

S10.

Slip

Rays

=

Ap |

Kp.

‘aio

zi

‘sc

0 6

06 0 i 5 8

a

13h 10 em flux
95 Re
HP “9004 $16 16512 S15 (ap)é
9003 N19(3)
(9017) $29

Gee. 4, 1967 00 vr Ol 02 OS

Aurora overhead in USSR at $ * $7° 1300-1700 and at $ = 59° 1700-2000; ionospheric F region relatively qutets

br. green corona 7 days earlier on NE linb and 7 days later on W and SW Lind.

FLARES

— 1/99

Bursts

la tp

jo}to

3

130 10 cm flux
98 Re

6 8 ie 5 8

fone of ton magnetically quiet days; donoapheric F region relatively quiet.

145



Day 10 cm Sun- Geo- Iono- CMP of Highlights
Flux spot mag. Index Region
S__No. Ap Ip Ia Number
1967 May
10107 «17 «7 «0 0 Solar: radio int, 10 with 2 subflares in location of R-8791 at W
limb; spot decreasing in size with radio int. 17 and 2 subflares
in R-8798; small spot continues with radio int. 15 and 2 subflares
in R-8807; 2 subflares in R-8806.
Geophysical: continued quiet magnetic activity early in the day
becoming very slight after 1200.
Events: major: Ho (R-8791) 1051-1250, impt. 2n; minor: Ha (R-8791)
0741 with APR, 0852 and.1151 with cm solar burst and SID; solar
x-rays 0711 and 1141.

11 104 25 io 00 R-8803(3) Solar: radio int. 7 and 1 subflare in position of R-8791 at W limb;
quis) spot continues to decrease with radio int. 16 in R-8798; small
spot continues with radio int. 14 and 6 subflares in R-8807; small
spot appears in R-8806; spot at E limb with radio int. 18 and 2
subflares in R-8810,

Geophysical: slight-to-moderate magnetic activity 0000-0600, sub-
siding to quiet 0900-1500, then increasing to very slight there~
after; ionospheric F region relatively quiet.

Events: minor: solar x-rays 0929.

ws % 13 00 Solar: spot continues to decrease with radio int. 16 and 5 subflares

in R-8798; small spot becomes group with radio int. 13 and 1 sub-
flare in R-8807; 3 subflares in R-8809; small spot continues with
1 subflare in R-8806; spot continues with radio int. 22 and 2 sub-
flares in R-8810; br. green corona NE limb, mod. green corona SE
and SW limbs.

Geophysical: slight-to-moderate magnetic activity subsiding to very
slight 0600-1800, then increasing to slight activity; aurora over
North America $ = 60° 0000-0500.

Events: minor: Ho (R-8798) 1753 and 2157; BSL (R-8810) 1315-1435.

13105 34 14 0 2 Solar: spot last seen at W limb with radio int. 10 and 5 subflares
in R-8798; spot group continues with radio int. 11 and 2 subflares
in R-8807; small spot appears with 1 subflare in R-8809; small spot
continues in R-8806; spot continues with radio int. 16 and 1 sub-
flare in R-8810; small spot at E limb with radio int, 10 in R-8813.

Geophysical: moderate magnetic disturbance 0300-0600, then subsiding
to very slight activity rest of the day; aurora over North America
= 60° 0000-1100.

Events: minor: Ha (R-8798) 0228; ADF (N35 W50) 0245-0650.

14 106* 40 10 © 5 R-8806(7) Solar: radio int. 7 with 1 subflare in location of R-8798 at W limb;
(N24) spot gone but radio int. 11 and 1 subflare in R-8807; small spot

continues with radio int. 7 and 2 subflares in R-8809; spot dis-
appears in R-8806; spot continues with radio int. 14 in R-8810;
small spot continues with radio int. 15 in R-8813; radio int.
15 with 1 subflare in R-8816.

Geophysical: very slight magnetic activity 0300-1200 increasing to
slight activity thereafter.

Events: minor: Ha (R-8807) 1534 with cm solar burst and solar x-rays;
m solar burst 0458; APR (R-8816) 0600-1615.

* adjusted for burst

- 106 -



1966 10 cm
Nov. Flux
Ss &,

Sun- Geo-
spot mag.

2 No. AP

CMP of
Region
Number

Highlights

18 116 113 57) 1

19 114111 65 12

20 14 111 74

o

21° Li3*Ll1* 77 6

22 120116 «78 3

* adjusted for burst

R-8588
(s15)

R-8578
N23)

R-8589
N22)

Solar: spot groups continue, radio int. 35, 21 cm radio noise and

9 subflares in R-8573; spot group continues, radio int. 11 and 1
subflare in R-8578; spot continues, new spot appears, radio int.
19 and 6 subflares in R-8584; radio int. 12 and 21 cm radio noise
in R-8586; radio int. 6 in R-8574; minor events: Hy (R-8573)
0516; br. surge (R-8584) 1307E.

Geophysical: magnetically extremely quiet until 0900, 1 KpOr,

2 KpOo, slight-to-moderate activity thereafter; cosmic ray de-
crease begins recovery; homogeneous auroral band overhead at
¢ = 56° over U.S.S.R, 1500-2200 and homogeneous arc at ¢ = 54°
1700-2000, bright homogeneous arc overhead in ¢ = 68° over
Western Europe with horizon glow visible to ¢ = 59°; iono-
spheric F region slightly disturbed.

Solar: spot groups continue, radio int. 22, 21 cm radio noise

and 11 subflares in R-8573; spot slightly decreasing, radio int.
12 and 1 subflare in R-8578; spots continue, radio int. 18 and 2
subflares in R-8584; radio int. 7 and 21 cm radio noise in R-8586;
moderate green corona NE limb; radio int. 12 in R-8589; minor
events: Ha (R-8584) 0820.

Geophysical: slight magnetic activity; SID at 1830; cosmic ray

decrease recovers; homogeneous auroral arc overhead at 4 = 55°
over U.S.S.R, 1200-1700, short rays of medium brightness at
= 54° 1800, homogeneous band at ¢ = 56° 1400-1900.

Solar: no spots, radio int. 10, 21 cm radio noise and 2 subflares

in R-8573; spot continues, radio int. 18 in R-8578; spot sizes
decrease slightly, radio int. 16 and 8 subflares in R-8584; small
spot group appears, radio int. 6 and 1 subflare in R-8588; large
spot group appears, radio int. 18, 21 cm radio noise and 7 sub-
flares in R-8589; radio int. 16 and 21 cm radio noise in R-8586;
br. surge (R-8584) 2025.

slight magnetic activity until 0600, quiet until
1800, then very slight activity thereafter; SID at 1632; rayed
auroral band of medium brightness overhead at ¢ = 58° over U.S.S.R,
1300, homogeneous arc at $= 55° 1400-2100, short rays at ¢ = 55°
1900 and homogeneous band at $= 56° 1800-1900.

Solar: R-8573 over W limb; spot decreases slightly in size, radio

int. 30 in R-8578; spot sizes decrease slightly, radio int. 17

in R-8584; small spot group continues in R-8588; large spot

group continues, radio int. 30, 21 cm radio noise and 12 subflares
in R-8589; new spot appears R-8589; radio int. 15 and 21 cm radio
noise in R-8586; minor event: dark surge (R-8589) 0245.

Geophysical: very slight magnetic activity 0300-0900, quiet until

2100, 1 KpO#, slight activity thereafter; homogeneous auroral arc
overhead at ¢ = 57° over U,S.S.R. 1600-1900.

Solar: no radio int. available; spot continues in R-8578; spots

continue, 1 subflare in R-8584; small spot group continues in
R-8588; large spot group continues, 21 cm radio noise and 10 sub-
flares in R-8589; new spot in R-8589 disappears; 21 cm radio noise
in R-8586; moderate green corona NW limb; minor events: Hr (R-8589)
1024E with cm. and m. solar bursts, and 1128E, (R-8584) 1835E with
cm. and m. solar bursts; type IL, 19-40 MHz 1903E-1914, type IV,
35-40 MHz 1920-2036; active dark filament (R-8589) 2008-2254D.

Geophysical: magnetically extremely quiet, 1 Kp0o, 4 KpO+; SID at

1830; ionospheric F region relatively quiet.



1966
Sep.

10 cm Sun- Geo-
Flux spot mag.
No. AP

CMP of
Region
Number

Highlights

10

11

12

4

93 94 37 19

95 97 42 7

100*101* 38 5

101 102 29

S

106 107 35 10

* adjusted for burst

(R-8502)
(wo9)

R-8491(2)

(823)
R-8496 (4)
(N20)

R-8497 (4)
(N29)

Solar; spot group continues, radio int. 3, 21 cm radio noise
and 4 subflares in R-8496; spot group continues, radio int.
13, 21 cm radio noise and 11 subflares in R-8484; 1 sub-
flare in R-8495; minor events: Ho (R-8496) 0603, 1220E with
dm. solar burst and 1813 with cm. solar burst; m. noise
storm 0730-1330; m. and dm. solar bursts 1420; dark surge
(R-8484) 1030E.

Geophysical: slight-to-moderate magnetic: activity continues;
S-SWF at 0606; SFDs at 1720 and 1819.

Solar: spot continues, radio int. 12, 21 em radio noise and
4 subflares in R-8496; spot group increases in size, radio
int. 15, 21 cm radio noise and 3 subflares in R-8484; 1
subflare in R-8495; 1 subflare in R-8501; minor events:
m. and dm, solar bursts 0730 and cm. solar burst 1305.

Geophysical: magnetically quiet after very slight activity
to 1200.

Solar: spot continues, radio int. 13, 21 cm radio noise and
1 subflare in R-8496; spot group continues, radio int. 7,
21 em radio noise in R-8484; no spot, radio int. 12, 21 cm
radio noise and 1 subflare in R-8505; possible spot group
appearance in R-8502; spot, radio int. 6, 21 cm radio
noise in R-8497; minor events: Ha (R-8505) 0858 with br.
surge, (R-8506) 0925 with cm., m., and dm. solar bursts,
(R-8497) 1242 with om. solar burst; active prominence
region (R-8505) 0705E-2213E; eruptive prominence (R-8505)
1012E; active prominence region (R-8506) 0906.

Geophysical: continued magnetically quiet; G-SWF at 0320;
G-SWE, SCNA, SEA and SES at 0930; ionospheric F region
relatively quiet; aurora at ¢ = 58° over North America
0000-0500.

Solar: spot size decreases, radio int, 15, 21 cm radio noise
and 2 subflares in R-8496; spot appears, radio int. 13,
21 cm radio noise and 4 subflares in R-8505; spot group
continues, radio int. 9 in R-8484; radio int. 6 in R-8497;
minor events: Ha (R-8484) 0930 with active prominence
region, and (R-8501) 1256.

Geophysical: continued magnetically quiet; ionospheric F
region relatively quiet; at 1300-1400 homogeneous auroral
are overhead at ¢ = 60°, at 1500-1600 br. homogeneous band
at $= 58°, at 1600 homogeneous arc at ¢ = 59° and at
1700-1800 rays at $= 59° over U.S.S.R.

Solar: spot continues, radio int. 18, 21 cm radio noise and
1 subflare in R-8496; spot becomes spot group, radio int.
36, 21 cm radio noise and 15 subflares in R-8505; moderate
green corona at NE limb; radio int. 6 in R-8484; radio int.
6 in R-8497; minor events: Hy (R~8505) 0310 with active
prominence region and br. surge and 1416, (R-8484) 1012
with cm., m., and dm, solar bursts, br. surge and eruptive
prominence at limb.

Geophysical: continued magnetically quiet until slight acti-
vity 1500-2400, sudden commencement at 1511; S-SWF and SPA
at 0048; SPA at 0311; S-SWF, SCNA, SEA, SPA and SES at 1008;
S-SWF, SCNA and SPA at 2205; SCNA, SEA and SPA at 2348; at
1800-1900 homogeneous auroral arc overhead at $= 61° and
at 1900-2200 rayed band at ¢ = 58° over U.S.S.R.

- 52 -



Day 10 cm Sun- Geo- Iono- CMP of
Flux spot mag. Index Region

Ap__Ip Ia . Number

Highlights

S__No.
1967 April
16

(Cont'd)
1712542
18127 58
19126 56
20126 44
2113360

io cl

7 0 0 R-8777
(823)

20 0 4 R-8776
(N23)

Geophysical: slight magnetic activity.

Events: minor: Ho (R-8779) 1835 with SID; m noise storm 0755-1200;
m and cm solar burst 0855; SID at 0125 and 1655; ADF (R-8767) 0435;
APR (R-8761) 0705-1600 and ($52 E limb) 1315-2200,

Solar: small spot continues with radio int. 10 and 3 subflares in
R-8767; spot continues with radio int. 38 and 2 subflares in R-8776;
spot continues with radio int. 18 in R-8778; spot at E limb with
radio int. 19 in R-8779.

Geophysical: slight-to-moderate magnetic activity 0000-1200, quiet
thereafter; ionospheric F region disturbed in some sectors.

Events: minor: APRs (R-8767) and (S40 E55) 0810-1220 and (R-8776)
1230-1630; BSL (R-8776) 1150-1320.

Solar: small spot continues with radio int. 10 and 3 subflares in
R-8767; spot continues with radio int. 38 and 4 subflares in
R-8776; spot continues with radio int. 22 in R-8778; spot group
continues with radio int. 20 in R-8779.

Geophysical: very slight magnetic activity; ionospheric F region
disturbed.

Events: minor: Ha (R-8767) 1016 with m solar burst; cm solar burst
0650, 1725 and 1925; APRs (SLO E50) and (R-8771) 0800-1230; ADFs
(NOS W32) 2055 and (NOO W35) 2215.

Solar: small spot over W limb with radio int. 9 and 1 subflare in
R-8767; spot continues with radio int. 33 and 10 subflares in
R-8776; spot continues with radio int. 19 and 3 subflares in
R-8778; spot group continues with radio int. 19 and 2 subflares
in R-8779; small spot appears in R-8781; small spot appears with
1 subflare in R-8777; mod. green corona NE limb; br. green corona
SE limb.

Geophysical: slight-to-moderate magnetic activity; aurora overhead
at @ = 59° 1100-1200, at @ = 55° 1900-2000; ionospheric F region
disturbed.

Events: minor: cm and dm solar bursts 1915-1930; ADF (NOO W35) 0125;
APR (R-8779) 0850-1100; ADFs (N26 W26) 2055-2315 and (R-8776) 2205.

Solar: spot continues with radio int. 26 and 3 subflares in R-8776;
spot continues with radio int. 16 in R-8778; spot group continues
with radio int. 16 in R-8779; small spot continues with 5 sub~
flares in R-8781; small spot with radio int, 10 and 1 subflare in
R-8777; br. green corona NE limb; mod. green corona SW and Nk limbs.

Geophysical: very slight magnetic activity; aurora overhead in
U.S-S.R. at § = 56° 1900-2100.

Events: major: Ha (R-8778), impt. 2n, 2118-2218 with cm solar burst;
minor: Ho (R-8778) 2112 with cm solar burst and (R-8778) 2115.

Solar: spot continues with radio int. 27 and 3 subflares in R-8776;
spot continues with radio int, 14 in R-8778; spot group continues
with radio int. 18 and 1 subflare in R-8779; small spot with 1 sub-
flare in R-8781; small spot growing with radio int. 18 and 2 sub-
flares in R-8777; spot group with radio int. 17 and 2 subflares in
R-8785; br. green corona SW and NW limbs; mod, green corona NE limb.

Geophysical: very slight magnetic activity continues; ionospheric F
region slightly disturbed in some sectors.

Events: minor: Ha (R-8778) 0806 and Ha (R-8781) 0823; m solar burst
and BSL (N27 E limb) 1325; BSLs (N27 E limb) 1535 and 1655; Dkm and
m type II, 2042 and 2049.

- 1ol -



1966 10 cm

May

Flux
s§

Sa

Sun- Geo-
spot mag.
No.

Ap

CMP of
Region
Number

Highlights

10

il

12

86

88

86

86

85

87

91

88

90

88

88

87

88

93

23

13

16

4

4

7

10

6

R-8285
(N17)

R-8286
(N30)
R-8290
(N12)

(R-8303)
($20)

(R-8298)
(N23)

R-8289(3)
(N35)

R=8296
(N23)

Solar 21 cm radio noise and 3 subflares in R-8279; spot
again By, radio int. 12, 21 cm radio noise and 8 sub-
flares in R-8284; spot gone but radio int. 7 in R-8285;
radio int. 9 in R-8289; minor event: Hy (R-8284) 0322.

Geophysical: magnetically quiet except slight disturbance
0300-0900.

Solar: no spot mag. obs. Mt. Wilson; 1 subflare in R-8279;
spot continues, radio int. 15, 21 cm radio noise and
7 subflares in R-8284; radio int. 7 and 1 subflare in
R-8285; radio int. 8 and 1 subflare in R-8289; weak
green corona and radio int. 8 on NE limb.

Geophysical: continued magnetically quiet especially 0300~
0900 and 1200-1500 Kp0+; SPA at 2022.

Solar: 2 subflares in R-8279 at W limb; spot continues,
xadio int. 14, 21 cm radio noise and 1 subflare in
R-8284; radio int. 7 in R-8285; 1 subflare in R-8289;
moderate green corona and radio int. 10 in R-8294 at
E limb,

Geophysical: continued magnetically quiet especially 0300-
0900 Kp0+00; SI-SWF and SCNA at 0431,

Solar: no spot mag. obs. Mt. Wilson; spot continues, radio
int. 10 and 4 subflares in R-8284; radio int. 7 and 1 sub~
flare in R-8289; moderate green corona, radio int. 17 and
21 cm radio noise in R-8294; minor events: Hx (R-8284)
0905E; br. surges (R-8284) 0450 and 2055; type II, 26~
280 MAz, 2139-2155.

Geophysical: continued magnetically quiet especially 1800-
2400 KpO+; SCNA and SPA at 0431.

Solar: no spot mag. obs. Mt. Wilson; radio int. 8 in R-8284
at W limb; 1 subflare in R-8285; radio int. 18, 21 cm
radio noise and 1 subflare in R-8294; radio int. 10 in
R-8299; minor events: Hy (R-8284) 0724E; br. surge
(R-8284) 1001.

Geophysical: continued magnetically very quiet 5 Kp 0o or
OF.

Solar: no spot mag. obs. Mt. Wilson; radio int. 8 in R-8285
at W limb; radio int. 19, 21 em radio noise and 4 sub-
flares in R-8294; radio int. 7 in R-8299; 1 subflere in
R-8289; 1 subflare in R-8293; small spot and 1 subflare in
R+8300; minor events: HY (R-8294) 2048 with cm. and m.
solar burete; type IV, 25-41 Mz, 2113-2148 and type Il,
22-41 MHz, 2118.5-2130; active prominence region (R-8294)
2042,

Geophysical: continued magnetically quiet 0000-0600,
slight-to-moderate disturbance 1200-2400; S]~SWF, SCNA,
SEA and SPA at 2100.

Solar: no spot mag. obs. Mt. Wilson; 21 em radio noise and
1 subflare in R-8294; radio int. 9 in R-8299; small spot
continues, radio int. 17 and 1 subflare in R-8300; 1 sub-
flare in R-8298; minor eventa: Hx (R-8294) 1825} br.
surge (R-8294) 1432.

Geophysical: magnetically quiet.

- 26 -



1966
Apr.

10 cm

Fh
s

ux

Sa

Sun-
spot mag.
No.

Geo-

Ap

CMP of
Region
Number

Highlights

14

16

17

18

19

20

93

90

96

93

94

92

88

93

93

91

96

93

95

93

89

94

24

29

29

35

40

40

24

37

15

3

(R-8259)
qs)

R-8262 (3)
(N22)

(R-8265)
(823)

(R-8275)
Qi29)

Solar: spot gone but 7 subflares in R-8240; radio int. 8
and 1 subflare in R-8254; spot, radio int. 38, 21 cm
radio noise, and 9 subflares in R-8262; minor event:
(R-8240) 0635 and 1148; spray (R-8240) 0624-0635;
noise storm.

Geophysical: slight magnetic disturbance throughout day;
S-SWF, SCNA and SPA at 0616; S-SWF, SCNA, SEA, and SPA at
0706; SPA and SES at 1015; SPA at 1147; G-SWF at 1440.

Ha
solar

Solar: radio int. 7 in R-8254; spot By, radio int. 39,
21 em radio noise, and 4 subflares in R-8262; minor
events: Ro (R-8262) 0406 and 0702; dark surges (R-8262)
0422 and 0724; cm. solar bursts 0410 and 1245.

Geophysical: magnetically quiet except slight disturbance
0900-1500 and 2100-2400; ionospheric F region slightly
disturbed.

Solar: radio int. 10 in R-8254; spot By, radio int. 49,
21cm radio noise, and 3 subflares in R-8262; major
event: Ha (R-8262) impt. 2b, 0950-1135 with em. and
m. solar burst.

Geophysical: magnetically quiet after slight disturbance
0000-0300, especially 1200-2400 Kp0t0o; SL-SWF, SEA, SPA,
and SES at 1003.

Solar: spot By, radio int. 37, 21 om radio noise, and

“3 subflares in R-8262; 1 subflare in R-8254; 1 subflare in
R-8265; minor event: cm. solar burst 1830.

Geophysical: continued magnetically very quiet especially
0000-1200 Kp0+; SFD at 1831.

Solar: spot smaller, radio int. 42, 21 cm radio noise, and
9 subflares in R-8262; minor events: Ha (R-8262) 0842E,
M20 and 1744; dark surges (R-8262) 0847 and 2025-2034;
sudden disappearance of filament (R-8262) 1745; cm. solar
bursts 0940 and 1750.

Geophysical: continued magnetically quiet; S-SWF at 0844;
SEA at 0942; SFD's at 1750 and 2030; ionospheric F region
relatively quiet.

Solar: spot slightly smaller, radio int. 38, 21 cm radio
noise and 19 subflares in R-8262; minor events: Ha
(R-8262) 1326; cm. solar burst 0430.

Geophysical: continued magnetically very quiet 4kp0+0o;
S-SWF and SPA at 0500; SEA at 0752.

Solar: spot smaller, radio int. 27, 21 cm radio noise, and
3 subflares in R-8262; 6 subflares in R-8272; minor event:
dark surge (R-8262) 2040-2235.

Geophysical: continued magnetically extremely qifiet, SKp000+;
ionospheric F region relatively quiet.

Solar: spot still smaller, radio int. 32, 21 cm radio noise,
and 1 subflare in R-8262; small spot, radio int. 13, 21 cm
radio noise, and 6 subflares in R-8272; moderate green
corona and small spot in R-8273; minor events: Ho (R-8272)
0847E, (R-8262) 0919; dark surge (R-8272) 0805; active
dark filament (R-8262) 1612-2219.

Geophysical: continued magnetically quiet except slight
disturbance 1200-1500.

~ 22 -



Day 10 cm Sun- Geo-
Flux Spot mag.

Ap

Iono-

CMP of

Index Region
Ip _Ia_Number

Highlights

S__No.
1967 May
04
(Cont'd)
05 126 «68
06 121 49
07 118 «#441
08 115 18
09 112 «25

10

16

5

0 3

03

(0) 0

R-8795
(N25)

(N26)

Geophysical: slight-to-moderate magnetic activity early in the day,
subsiding to mostly slight activity thereafter; slight cosmic ray
decrease reaches maximum, begins gradual recovery, though never
reaches level of May 1; aurora over USSR, ¢=60° at 1200; aurora
over North America, $=58° 0000-1100; ionospheric F region slightly
disturbed at high latitudes.

Events: major: Ho (R-8798)0120-0307, impt. 2n with cm and dm
solar burst and SDF; minor: Ha (R-8795)1208; SID at 0255; BSD
(R-8788) 0120-0145; APR (R-8785) 0730-1115; ADF (R-8792) 1800-2310.

Solar: no visual spot but 1 subflare in R-8788; spot group continues
with radio int, 22 and 6 subflares in R-8796; spot continues with
radio int. 26 and 5 subflares in R-8791; spot continues with radio
int, 28 and 2 subflares in R-8798; small spot disappears but radio
int, continues at 12 in R-8795; mod. green corona SE limb.

Geophysical: mostly slight magnetic activity, becoming quiet 1200-
1500; aurora over North America, $=58° 0000-0500 and $=59° 0600-
1100,

Events: minor: Ho (R-8788) 1110 with cm solar burst; solar x-rays
1541,

Solar: spot group goes over W limb with radio int, 17 and 7 subflares
in R-8796; spot continues with radio int, 27 and 3 subflares in R-
8791; spot continues with radio int. 22 and 2 subflares in R-8798,

Geophysical: some slight magnetic activity, though mostly quiet.

Events: principal: Ha (R-8791) 0432-0538, impt, 3n, with cm and dm
solar burst, SID and solar x-ray; minor: Ho (R-8796) 1400 with cm
solar burst and SID 2035.

R-8798(3)Solar: radio int. 16 and 7 subflares in R-8796; spot continues to

grow smaller with radio int, 20 and 6 subflares in R-8791; spot
continues with radio int, 22 and 1 subflare in R-8798; radio int.
14 on SE limb probably in R-8807.

Geophysical: brief moderate magnetic activity following sc at 0105,
subsiding to quiet after 1200; aurora over North America at $=59°
0000-1100

Events: or: Ha (R-8791) 1111; (R-8797) 1122; cm solar burst,
SID and solar x-rays 2055.

Solar: small spot continues with radio int, 17 and 2 subflares
in R-8791; spot continues with radio int. 20 in R-8798; radio int.
22 and 1 subflare in R-8807 at E limb; br. green corona SE limb,
mod. green corona NW limb,

Geophysical: mostly magnetically quiet, some very slight activity
1200-2100; ionospheric F region relatively quiet.

Events: major; Ho (R-8791) 1125-1434, impt. 2n with cm and dm
solar burst, SID and solar x-rays; minor: Ho (R-8791) 0613, 1314,
and 1342; solar x-rays 2030 and 2240,

Solar: small spot last seen at W limb with radio int, 14 in R-8791;
spot continues with radio int. 22 and 4 subflares in R-8798; small
spot appears with radio int. 20 and 3 subflares in R-8807,

Geophysical: continued mostly quiet magnetic activity; small cosmic
ray decrease of about 2% reaches maximum, begins very slow recovery,
lasting until May 16; ionospheric F region relatively quiet.

Events: minor: APR (R-8791) 0715-1210.

() estimated from less than 24 hours data

- 105 -



Dec. 22, 1967 00 urd 02

FLARES

om

dm.

TMm.

Bursts

Dim

S10.

X-Rays

7p [Kp Ey

ate

az {sc

[2 jo

0
188 10 cm flux
105 Re
Gp 9118 123.(462)

8 06 08 ig 5 iy a
De. green corona 7 days earlier on NE Liab.

125 S16 «16621 S17 (Bp)S
16616 $28 (81

Dee. 23, 1967 0 ur gl 02

Sw Bt tg

FLARES

= inl ye

foie

}lo

170 20 em flux.
Lol ke
CMP 9122 S14(4) (16617) S15 op

8 6 co iz 5 i i

Connie ray recovery takes place; fonoapherie F region slightly disturbed; br. geen corona 7 days earlier on
RE Liab.

‘9120 $272) 16622 $25 (By)S

Dec. 24, 1967 00 ur O02

eS Ste

FLARES

Bursts

o}tp

o}to

158 10 em flux

91 Re
cae (9323) m6

Dec. 25, 1967 0 ur Ol

8 a6 e 2 t iy a

‘One of ten magnetically quiet dayes aurora overhead over USSR at $= 59° 1500; br. green corona 7 days earlier
fon SE Linh and 7 days Later on SW limb.

(16632) 518 (op)2

8 &  % 0 of oe ete

FLARES

om

‘dm

m

km,

S10.

Rays.

Kp 7

Ip

se

a}to

165 10 em flux

An Re

ur 9124 $20(243) 16626 S18
9126 016(263)

(16827) 819

Dec. 26, 1967 Our Ol 02

8 & (J iz 5 6 f]

One of five magnetically quiet days; tonospheric F region relatively quiet; br. green corona 7 days
SE limb.

op

op

I Se OS LO

FLARES

10/28 = 1n/2h

Bursts

piss store.

jolt

o}10

0

171 10 ex lux

1k Re

GHP 9130 nos
16619 WES (ap)2

om 6 oy i2 5 Te a

One of ten nagneticatly quiet days; br. green corona 7 days Later on SW and XW Limbs.

162



5.

"LtActivité Solaire", M. J. Martres, Observatoire de Meudon,
published in L'Astronomie. Monthly.

Data for 19 December 1967 - 15 January 1968, issued
June-July 1968, received WDC-A September 1968.

Faculae, filaments and sunspots on 27-day rotation
chart and table of remarkable prominences.

“Solar-Geophysical Data" (IER-FB formerly CRPL-F Part B series),
edited by J. V. Lincoln and H. I. Leighton, ESSA Research
Laboratories, Environmental Science Services Administration,
Boulder, Colorado, U.S.A. - 80302. Monthly.

First issue CRPL-F135 Part B, data for September and
October 1955, issued November 1955.

IER-FB291 data for May, September and October 1968,
issued November 1968, received WDC-A December 1968.

Alert periods, daily solar indices, solar centers of
activity, solar flares, sudden ionospheric disturbances,
solar radio waves - fixed frequency and spectral, solar
wind, solar proton monitoring and events, coronal line
emission indices, solar x-ray radiation, cosmic ray
neutron monitoring, geomagnetic indices including prin-
cipal magnetic storms and sudden commencements, radio
propagation indices.

"Ionospheric Data" (CRPL-FA), edited by Institute for Telecommuni-
cation Sciences, ESSA, Boulder, Colorado, U.S.A. 80302. Monthly.

IRPL-F1 issued September 1944
CRPL-FA289, data for miscellaneous periods back to 1963,
issued September 1968, received WDC-A November 1968.

Worldwide monthly median tables and graphs of up to 11
ionospheric characteristics. Data usually less than two
years old.

World Data Center A "Upper Atmosphere Geophysics Reports" (UAG series),
ESSA Research Laboratories, Boulder, Colorado, U.S.A. 80302. Irregular.

UAG-1, IQSY airglow data, issued July 1968
UAG-2, Solar flares 1964-1966, issued August 1968
UAG-3, Jupiter emissions 6 July 1966 through

8 September 1968, issued November 1968

- 165 -



Special issues

1.

“Calendar Record for the IGY", A. H. Shapley and J. V. Lincoln,
Annals IGY, 16, 1-157, 1962, Pergamon Press, London.

"Calendar Record for the IGC 1959", A. H. Shapley and J. V. Lincoln,
Annals IGY, 16, 201-300, 1963, Pergamon Press, London.

“Solar and Geophysical Events 1960-1965 (Calendar Record)", J. V.
Lincoln, Annals of the IQSY, 2, 1-297, 1968, M.I.T. Press, Mass., U.S.A.

"Geomagnetic Planetary Indices Kp, Ap and Cp, 1932-1961", J. Bartels,
TAGA Bulletin No. 18, IUGG Publications Office, 39 ter, Rue Gay-
Lussac, Paris (V) France.

"Hourly Values of the Auroral Electrojet Activity Index AE", T. N.
Davis, C. Echols and Y. S. Wong, Geophysical Institute, University
of Alaska, College, Alaska, U.S.A.

Data for July-December 1957 in UAG R-194, published March 1968
January-December 1958 in UAG R-192, published July 1967
January-December 1959 in UAG R-195, published October 1967
January-December 1960 in UAG R-199, published March 1968
January-December 1961 in UAG R-196, published October 1967
January~December 1962 in UAG R-197, published October 1967
January~December 1963 in UAG R-200, published March 1968
January-December 1964 in UAG R-198, published September 1967

“Provisional Hourly Values of Equatorial Dst for 1961, 1962 and
1963", M. Sugiura and S. Hendricks, NASA Technical Note (TIN-D-4047),
National Aeronautics and Space Administration, Washington D. C.,
August 1967.

- 169 -



1966 10 cm Sun- Geo- CMP of Highlights
June Flux spot mag. Region
SS, No. Ap Number

19 94 97 33

o

(R-8352) Solar: no spot mag. obs. Mt. Wilson; radio int. 9 and
quis) 21 cm radio noise in R-8338; spot continues, radio
int. 17 and 1 subflare in R-8340; spot continues, radio
int. 8, 21 em radio noise and 2 subflares in R-83445
minor events: Hr (R-8340) 0920E with em. solar burst;
m. solar noise storm.

Geophysical: continued magnetically quiet 0000-0900 Kp0+,
slight disturbance 1200-1500 and 1800-2100; small patches
noctilucent clouds over Western Europe in latitudes 53°~
57° at 0050, faint patches visible in latitudes 55°-56°
from 2245-0045.

20 91 94 42 7 R+8353 Solar: radio int. 9 and 21 em radio noise in R-8338; spot
(N18) size decreasing, radio int. 15 and 4 subflares in R~8340;
spot continues, radio int. 9 and 21 cm radio noise in
R~8344; 2 subflares in R-8352; 5 subflares in R-8353;
minor events: several m. solar noise bursts.
Geophysical: continued magnetically quiet except slight
disturbance 1800-2100; SPA at 0425.

21 90 94 29 4 Solar: no spot mag. obs. Mt. Wilson; radio int. 8 and
21 cm radio noise in R-8338; spot size decreasing, radio
int. 13 and 2 subflares in R-8340; spot continues, radio
int. 12, 21 cm radio noise and 3 subflares in R-8344;
2 subflares in R-8350; 1 subflare in R-8351.
Geophysical: continued magnetically quiet; SCNA at 2306.

22 93 96 «34

&

R-8345(3) Solar: no spot mag. obs. Mt. Wilson; radio int. 7 and
(N28) 21 em radio noise in R-8338 at W limb; spot continues,
radio int. 10 and 1 subflare in R-8340; 2 spot groups,
radio int. 18, 21 em radio noise and 4 subflares in
R-8344; 1 subflare in R+8350; 1 subflare in R-8345; spot
appears, radio int. 10, 21 cm radio noise and 6 subflares
in R-8348; radio int. 6 and 1 aubflare in R-8355; minor
events: m. solar noise storm; cm. solar burst 2200;
eruptive prominence (R-8355) 2030.
Geophysical: continued magnetically very quiet, 1500-1800
Kp0+.

23° 96 99 59 17 R-8344 Solar: no spot mag. obs. Mt. Wilson; spot, radio int. 11
(N23) and 3 subflares in R-8340 at W limb; spot groups continue,
radio int. 15, 21 cm radio noise and 3 subflares in
R-8344; small spot appears and 1 subflare in R-8345; spot
continues, radio int. 12, 21 cm radio noise and 8 sub~
flares in R-8348; radio int. 9 in R-8355; minor events:
HY (R-8344) O940E, (R-8345) 0925; cm. solar burst 0205;
m. solar noise storm; dark surges (R~8348) 1244 and 1348.
Geophysical: elight-to~moderate magnetic disturbance 0900-
2400; S-SWF and SPA at 0200.

24 100 104 63 l

a

R-8351(4) Solar: no spot mag. obs. Mt. Wilson; spots continue, radio

(N31) int, 15, 21 cm radio noise and 2 subflares in R~8344; spot
continues and 2 subflares in R~8345; spot continues, radio
int. 17, 21 em radio noise and 1 subflare in R-8348; spot,
radio int. 9, moderate green corona and 2 subflares in
R~8358; radio int. 13, moderate green corona and 1 sub~
flare in R-8361 at E limb; minor events: Hy (R~8358)
0655, (R-8345) 0855E with dark surges; m. solar noise
storm; eruptive prominence (R-8358) 1358.

- 34 -



Day 10 cm Sun- Geo-
Flux Spot mag.
S$ No. Ap

Tono- CMP of
Index Region
Ip Ia Number

Highlighte

1967 June
07 116 59 22

08 107 43° 15

09 LOL 2614

10 94 21 7

ll 94 20 6

0 5 R-8841
(819)

(0) 3 R-8837
qui7)

R-8838

(s14)

0 4 R+8836
(s17)

Solar: radio int, 10 and 4 subflares in R-8829; spot groups con-
tinue with one By, radio int. 47 and 7 subflares in R-8831;
spot decreasing with radio int, 10 in R-8837; small spot continues
with 1 subflare in R-8838.

Geophysical: moderately severe magnetic storm until 0300 Kp 7-
decreasing to quiet after 0900; auroral glow on horizon over
Western Europe visible to ¢=57° early in morning; aurora over North
America to $=58° 0000-0500 and $=57° 0600-1100; ionospheric F region
disturbed with auroral blackout at high latitudes; Forbush de-
crease reaches maximum drop of 5%, begins recovery complete on
June 11,

Events: minor: Ho (R-8831) 0748; Ha (R-8829) 0802, 0840, 0854 with
dm and m solar burst, 1451, and 1955; cm solar bursts 1120-1640;
dm solar burst 1430-1940; m solar bursts 0500-1250; APR (R-8834)
0005-0545, BSL (R-8829) 1520-1605, 1720-2125, and APR 2250-0725.

Solar: spot groups continue with radio int. 38 and 5 subflares in
R-8831; spot continues with radio int. 10 in R-8837; small spot
disappears in R-8838,

Geophysical: continued magnetically quiet, increasing to slight-to-
moderate after 0900.

Events: minor: Ha (R-8831) 1024; dm solar bursts 0640-2120; m noise
storm 0515-1450; BSL (R-8831) 0445-0600.

Solar: last of spot groups at W limb with radio int. 36 in R-8831;
small spot continues with radio int. 10 and 1 subflare in R-8837;
small spot appears with radio int. 6 and 1 subflare in R-8836;

1 subflare in R-8841; radio int. 8 and 2 subflares in R-8843,

Geophysical: mostly slight magnetic activity, becoming slight-to-
moderate after 2100,

Events: minor: Ho (R-8843) 1220; dm solar burst 0525-0640; m solar
bursts 0545-1320, 1730-1955; APR (S20-45 W limb) 0800-0935.

Solar: radio int, 14 at W limb in position of R-8831; small spot
continues with radio int, 9 in R-8837; small spot continues with
1 subflare in R-8836; radio int. 7 and 3 subflares in R-8843; br.
green corona NW limb, mod. green corona NE limb,

Geophysical: slight magnetic activity, subsiding to quiet after
0900

Events: minor: Dkm type II 0125,

Solar: small spot continues with radio int. 9 and 1 subflare in R=
8837; spot increases in size with radio int. 9 and 2 subflares in
R-8836; small spot with radio int. 7 and 2 subflares in R-8843;
br. green corona NW limb.

Geophysical: continued magnetically quiet, though some slight activ-
ity 1500-2100; June 7 Forbush decrease recovers; bright bands in
noctilucent clouds N55=57.5 WO1.5-07.5, 2245-0132,

Events: minor: Ho (R-8843) 1109 with DSD and BSL, and 1333; dm solar
bursts 1410-1650; m solar bursts 0830-1000; ADF (R-8839) 0005-0455,
(N31 E52) 0245-0455, (N33 E45) 1555-2400, and (R-8838) 1555-0330,

() estimated from less than 24 hours of data

- 115 -



Avguse 28, 196700 urcl 02

8

aw a

FLARES

pre
i

= pis
n

Bursts

}tp

to

167 10 ex flux
19 Re
GHP Region 6946 HL7(4)

07

8

&

Avguat 29, 19679 ur Ol

FLARES

on rn

‘dn n

Bursts

TM

Okm

lo |Ip

S10 n
X-Roys

lo Ja

a

Bp TK.

e [se

169 10 em flux

Ut Re

OH Region 8955 $23
(16480) 119¢ap)2
16479 S20(Bp)2

B

%

o

August 30, 196700 ur Ol

FLARES
Ab /a2

ie pe

em, n

32

161 10 cm flux

Wi ke

GAP Region 9952 W11
Region (8971) $13

w

8

0

‘August 31, 196700 vr Ot

FLARES

— 9

Bursts

ees io |tp
0

3 2

169 10 em flux

129 Re

GHP Region #952 $22(4)
Region 8953 532(2)

136 -



1966 10 cm
Oct. Flux
SS,

Sun- Geo~
spot mag.
No. Ap

CUP of
Region
Number

Highlights

6 102*102* 44 22

7 103 103 53 8

8 100 99 48 5

9 104 104 44 9

10 107 106) «665 3

11 110110 «66 2

* adjusted for burst

R-8530(5)
(N26)

Solar: R-8529 off W limb; 8y spot continues, radio int. 22,
21 cm radio noise and 10 subflares in R-8530; small second
spot continues, R-8530; spot group appears, radio int. 11
and 1 subflare in R~8528; moderate red and green corona NE
limb; minor events: Hy (R-8530) 1537 with cm. solar burst;
active dark filament (N28 E06) 0938.

Geophysical: slight magnetic activity until 0300, increasing
to moderate until 1500, slight activity thereafter; SID at
1535; 30 MHz absorption recovers 2240; short-to-medium
length rayed aurora of medium brightness at 4 = 57° over
U.S.S.R. 1300-1400; ionospheric F region still very dis~
turbed with considerable auroral blackout at high latitudes.

Solar: By spot continues, radio int. 17, 21 em radio noise and
2 subflares in R-8530; second spot continues in R-8530; spot
continues, radio int. 13, 21 cm radio noise and 3 subflares
in R-8528; minor event: dark surge (R-8528) 0919.

Geophysical: very slight magnetic activity until 1500, slight
activity thereafter; 30 MHz ionospheric absorption at Great
Whale River 0200-2300; ionospheric F region slightly dis-
turbed with some auroral blackout at high latitudes.

Solar: spot size decreases, radio int. 15, 21 cm radio noise
and 18 subflares in R-8530; small second spot continues in
R-8530; spot group continues, radio int. 11 and 21 cm radio
noise in R-8528; no spot, radio int. 7 in R-8539; minor
events: m. and dm. solar bursts 1015; eruptive prominence
(R-8539) 1545; dark surge (R-8530) 1705.

Geophysical: very slight magnetic activity until 1200, quiet
thereafter.

Solar: BY spot continues, radio int, 13, 21 cm radio noise
and 6 subflares in R-8530; small second spot continues in
R-8530; third area of spot activity, small group, appears
in R-8530; spot group continues, radio int. 9, 21 cm radio
noise and 6 subflares in R-8528; br. green corona NE limb;
major event: HY (R-8530) impt. 2n, 1045-1154 with cm. and
m. solar bursts and dark surge; minor events: HY (R-8530)
0912 with cm. solar burst, (R-8528) 1950 and 2106.

Geophysical: - slight magnetic activity.

Solar: spot size decreases, radio int. 12, 21 cm radio noise
and 5 subflares in R-8530; third small spot group continues
in R-8530; spot group decreases in size, radio int. 8, 21 cm
radio noise, and 2 subflares in R-8528; small spot appears,
21 em radio noise and 3 subflares in R-8544; large spot
appears, radio int. 22 and 21 cm radio noise in R-8545;
moderate green corona NE limb.

Geophysical: magnetically quiet, 1 Kp0, 4 Kp0+.

Solar: spot contines, radio int. 14, 21 cm radio noise and 1
subflare in R-8530; third small spot group continues in
R-85303 spot group continues, radio int. 8, 21 cm radio
noise and 1 subflare in R-8528; small spot continues, 21 cm
radio noise and 3 subflares in R-8544; large spot continues,
radio int. 24, 21 cm radio noise and 1 subflare in R-8545;
br. green corona NE limb; minor events: HY (R-8528) 0729
and 0813 with active prominence region.

- 58 -



Day 10 cm Sun- Geo- Iono- CMP of Highlights
Flux Spot mag. Index Region
S$ __No. Ap Ip Ja Number
1967 May
29 183 164 45 7 6 R-8825(4) Solar: spot groups continue with radio int. 92 and 9 subflares in
(820) R-8818; spot groups continue with radio int. 26°in R-8819; spot
groups continue with radio int. 33 and 9 subflares in R-8821;
spot groups continue with radio int. 30 in R-8824; spot groups
continue with radio int. 30 in R-8829; visible spot gone but radio
int. 8 and 1 subflare in R-8825; spot continues in R-8830; three
spot groups with radio int. 38 and 8 subflares in R-8831.
Geophysical: moderately severe magnetic storm continues until 0900
1 Kp 7-, subsiding to very slight activity by end of the day;
aurora over North America at ¢=51° 0000-1100 ; PCA event continues;
donospheric F region very disturbed with auroral and PCA absorption
at high latitudes. _
Events: minor: Ho (R-8831) 0742 and 0929 with cm and dm solar burst;
Ha (R-8818) 0821 with cm solar burst, 1423 with dm solar burst and
1856 with cm and dm solar burst, and m type IV; Ho (R-8824) 1457
with cm and dm solar burst and SID; cm solar bursts 0010, 0305-
0520 and 1210-1225; cm, dm, and m solar burst 2100, cm and dm solar
bursts 2215 and 2315 with SIDs; ADF (R-8825) 0025-0445 and 1605-
2025, (S40 W 13) 1605-2025, (R-8821) 1605-2025, and (R-8824) 1705-
2025; SID at 1550.

30173 150 42 6 4 R-8824 Solar: spot groups continue with radio int, 76 and 12 subflares in
(N24) R-8818; spot groups continue with radio int. 20 in R-8819; spot
groups continue with radio int. 27 and 3 subflares in R-8821; spots
continue with radio int. 24 in R-8824; spot groups continue with
radio int, 31 and 3 subflares in R-8829; radio int, 8 and 1 sub-
flare in R-8825; small spot continues with radio int. 12 in R-8830;
spot groups continue with radio int. 49 and 11 subflares in R-8831.
Geophysical: continued very slight magnetic activity until sc at
1426, followed by moderately severe storm rest of the day; Forbush
decrease recovers, though drops 4% again, reaching maximum very
late in the day; aurora over North America at $=59° 0600-1100; PCA
event ends; ionospheric F region disturbed in some sectors.
Events: minor: Ho (R-8818) 0406 with cm and dm solar burst, 1017
with m solar burst and 2024; Ha (R-8831) 0705; cm solar bursts
0225-0905, 1240-1410 and 1910-2240, dm solar bursts 1615-1855, m
solar bursts 0655-1410; cm solar burst 0715 with solar x-rays and
SID; SID at 0450 and 1815; ADF (R-8818) and (S42 W 20) 0255-0450;
(R-8825) 0725-1445 and ($43-W 31) 1725-2400; APR (R-8818) 0600-0710.

31171 147 48 (0) 3 Solar: following of three spot groups at W limb with radio int. 66
and 2 subflares in R-8818; spot groups continue to W limb with radio
int, 22 and 1 subflare in R-8819; spot groups continue with radio
int. 24 in R-8821; spots continue with radio int, 23 and 5 subflares
in R-8824; spot groups continue with radio int. 30 in R-8829; spot
continues with radio int. 16 in R-8830; spot groups growing with
radio int, 71 and 15 subflares in R-8831.

Geophysical: continued moderately severe magnetic storm until 0600,
1 Kp 70, subsiding quickly to Kp 1+ 1200-1500, then increasing
to slight-to-moderate thereafter; cosmic ray decrease begins recovery
until June 4; aurora visible over North America to ¢=53° 0000-0500
and ¢=58° 0600-1100; ionospheric F region very disturbed with some
auroral blackout at high latitudes.

() estimated from less than 24 hours of data

- 112 -



Day 10 cm Sun- Geo-

Tono-

CMP of

Index Region
Ip Ia Number

Highlights

Flux spot mag.
S No. Ap

1967 January
05174 150 3
06166 148 «6
07 159 13428
08 148 «116 «60

0 2
o 0
(0) 0
04

R-8631(6)
(N20)

R-8633(5)
(N06)

R-8632(2)
(823)

R-8638
Qw14)

Solar: R-8624 over W limb; large spot group increases in size,
radio int. 56 and 3 subflares in R-8629; multiple spot groups
continue, one Sy, radio int, 12 and 3 subflares in R-8631; spot
group continues, radio int, 15 and 2 subflares in R-8628; spot
group continues, radio int. 23 and 4 subflares in R-8632; spot
group continues, radio int. 17 and 6 subflares in R-8637; spot
continues, radio int. 10 and 1 subflare in R-8633,

Geophysical: magnetically quiet with 3 Kp0+; ionospheric F
region relatively quiet.

Events: minor: Ha (R~8628) 1027 with m and dm solar burst;
(R-8631) 1326 with cm solar burst; dm and cm solar burst at
0910; BSD (R-8629) 1020; no solar x-ray obs. from 1538 to
Jan. 6 at 1103.

Solar: large spot group continues, radio int. 42 and 11 sub-
flares in R-8629; multiple spot groups continue, radio int,
10 and 2 subflares in R-8631; spot group continues, radio
int. 12 and 1 subflare in R-8628; spot group continues, radio
int. 33 and 4 subflares in R-8632; spot group continues,
radio int. 16 and 1 subflare in R-8637; spot continues, radio
int. 7 in R-8633.

Geophysical: mostly magnetically quiet with very slight activity
0600-1200 and 1800-2100; gradual decrease in cosmic rays begins,
reaching maximum decrease on Jan. 9 before recovery on Jan. 10.

Solar: large spot group increases further in size, radio int. 31
and 2 subflares in R-8629; multiple groups continue, radio int.
9 and 1 subflare in R-8631; spot group continues, radio int. 11
in R-8628; spot group increases, radio int. 20 and 1 subflare
in R-8632; spot group continues, radio int, 27 and 1 subflare
in R-8637; spot group appears, radio int. 25 and 5 subflares in
R-8639; very small spot appears in R-8638; spot continues, radio
int. 8 in R-8633.

Geophysical: magnetically quiet until preliminary sc at 0759,
moderate storm thereafter; aurora overhead in North America to
= 57° 0600-1100, overhead in U.S.S.R. to @ = 56° 1300-1500
and @ = 55° 1600-1900, br. display mainly concealed by cloud
over Western Europe until the early hours of the morning of
Jan. 8 with rayed are overhead to ¢ = 65°-67° becoming brilliant
and showing pulsing around 0300 Jan. 8 and visible as horizon
glow to $ = 54°; ionospheric F region very disturbed in some
sectors} cosmic ray decrease continues.

Events: minor: Ho (R-8629) 0542 with dm and cm solar burst and
SID; m, dm and cm solar burst at 0850; SIDs at 1804 and 1908;
preliminary se at 0759+

Solar: large spot group begomes smaller, radio int. 22 and 3
subflares in R-8629; several spot groups continue, radio int.
10 and 2 subflares in R-8631; spot continues, radio int. 10
in R-8628; spot group decreases in size, radio int. 24 and 2
subflares in R-8632; spot group continues, radio int. 34 and
1 subflare in R-8637; -spot group increases in size, radio
int. 28 and i] subflares in R-8639; small spot continues
and radio int, 7 in R-8638; spot disappears in R-8633.

Geophysical: magnetic storm continues with moderately severe
intensity, subsiding to only slight activity 2100-2400;
cosmic ray decrease continues; aurora overhead over North
America to $ = 58° 0000-0500, = 55° 0600-1100 and = 59°
1200-1700; overhead over U.S.S.R. to ¢ = 54° 0800-1400,

( ) estimated from less than 24 hours data

-76-



1966 10 cm Sun~
May Flux — spot
S$ Sa__No.

Geo- CMP of
mag. Region
Ap ___ Number

Highlights

19 105* 107* 34

20 113% 116* 57

21 121 #124 80

22 118 121 66

23 111 114 68

3 R-8300(2)
(N32)

R-8301(2)
(N23)

8 R-8302
(822)

4 R-8304(2)
avis)

* corrected for burst

Solar: spot appears, radio int. 30, 21 cm radio noise and
5 subflares in R-8294; radio int. 8 and 1 subflare in
R-8296 at W limb; spot continues, radio int. 18, 21 cm
radio noise and 3 subflares in R-8302; radio int. 10 in
R-8301; spot, radio int. 27 and 7 subflares and moderate
green corona in R-8310 at E limb; minor events: Hy
(R-8294) 1512B; cm. solar burst at 2310

Geophysical: continued magnetically quiet especially 0600-
1500 Kp0+; SPA at 1510, SCNA at 2221, SCNA and SPA at
2315.

Solar: no spot mag. obs. Mt. Wilson; spot growing, radio
int. 48, 21 cm radio noise and 2 subflares in R-8294;
spot growing, radio int. 40, 21 cm radio noise and 7 sub-
flares in R-8302; radio int. 10 in R-8301; spot continues,
radio int. 37 and 21 cm radio noise in R-8310; radio
int. 11 in R-8304; 1 subflare in each of R-8300, R-8309
and R-8312; moderate green corona on NE limb; minor
events: By (R-8294) O808E and O910E, (R-8302) 0808E,
1010E and 2246; m. solar noise storm; dark surge (R-8302)
1115.

Geophysical: continued magnetically quiet except slight
disturbance 1800-2400.

Solar: no spot mag. obs. Mt. Wilson; spot continues, radio
int. 48 and 11 subflares in R-8294; spot continues to
grow, radio int. 46 and 3 subflares in R~8302; radio
int. 11 in R-8301; spot continues, radio int. 49 and
3 subflares in R-8310; radio int. 13 in R~8304; 1 subflare
in R-8300; minor events: Hx (R-8294) 0634, (R-8310) 1435;
m. solar noise storm.

Geophysical: magnetically quiet; SFD at 1835.

Solar! no spot mag. obs. Mt. Wilson; spot continues, radio
int. 26, 21 cm radio noise and 8 subflares in R-8294;
spot continues, radio int. 39 and 21 em radio noise in
R-8302; spot continues, radio int. 49, 21 em radio noise
and 3 subflares in R-8310; radio int. 10 and 1 subflare
in R-8301; radio int. 10 in R-8304 and R-8312; minor
events: Hy (R-8312) 1837; m. solar noise storm.

Geophysical: continued magnetically quiet; ionospheric
F region relatively quiet.

Solar: no spot mag. obs. Mt. Wilson; spot over W limb,
radio int. 14 and 5 subflares in R-8294; spot grows,
radio int. 39, 21 cm radio noise and 5 subflares in
R+8302; spot continues, radio int. 40, 21 em radio noise
and 2 subflares in R-8310; radio int, 9 in R-8304; radio
int. 16 and 2 subflares in R-8312; 2 subflares in R-8300;
radio int. 8 and 1 subflare in R-8313; minor events: Hy
(R-8312) 07002, (NOO E90) O714E, (R-8294) 1148E with m.
solar burst; m. solar noise storm.

Geophysical: continued magnetically quiet, especially 0600-
1200 and 2100-2400 Kp0+; ionospheric F region relatively
quiet.

- 28 -



Day 10 cm Sun- Geo~
Flux spot mag.
$ No, Ap

Iono-

CMP of

Index Region
Ip Ia Number

Highlights

1967 March
20
(Cont'd)

21 148 88 10

22 :151* 108 4

23157) lal 4

24163 12h 3

* adjusted for burst

oO

0

R-8733(5)
(N23)

Geophysical: mostly slight magnetic activity, some moderate activity
after 2100; aurora overhead in U.S.S.R. to ¢ = 57° 1800, @ = 54°
1900 and ¢ = 52° 2100; ionospheric F region disturbed with auroral
blackout decreasing at high latitudes.

Events: minor: Ho (R-8740) 0854, (R-8733)1348 with SID, Dkm, m, dm and cm
solar burst and Dkm type II, 2310 with SID and cm solar burst; BSLs
(R-8740) 0855 with Dim, m and cm solar burst, 1225; APR (R-8740)
1020-1550; SID at 1150 with solar x-rays and dm and cm solar burst.

Solar: spot group decreasing with radio int. 12 and 2 subflares in
R-8727; spot groups continue with radio int. 30 and 18 subflares;
spot with radio int. 8 and 1 subflare in R-8731; spot group conti-
nues with radio int. 54 and 12 subflares in R-8740; br. green
corona NE and NW limbs; mod. green corona SE limb.

Geophysical: continued moderate magnetic activity until 0300, mostly
very slight activity thereafter; ionospheric F region slightly
disturbed in some sectors.

Events: mino: Ha (R-8740) 0855 with cm solar burst, 1826 with SID
and dm and om solar burst; ADF (R-8740) 1515; BSL (R-8740) with SID;
SIDs at 0325 and 2200 with dm and cm solar burst.

Solar: spot still decreasing with radio int. 17 and 2 subflares in
R-8727; spot groups continue with radio int. 25 and 5 subflares in
R-8733: spot with radio int. 9 in R-8731; By spot group appears
with radio int. 68 and 4 subflares in R-8740; br. green corona NE
limb; mod. green corona NW limb.

Geophysical: continued very slight magnetic activity until 0600,
subsiding to quiet thereafter.

Events: principal: Ho (R-8740) impt. 3b 0022-0135 with SID, solar
x-rays and m, dm and cm solar burst; minor: Ha (R~8740) 0138 with
APR, 0942; BSL (R-8741) 0735; ADF (R-8733) 2215-0130.

Solar: small spot continues with radio int. 14 and 1 subflare in
R-8727; spot groups continue with radio int. 21 and 3 subflares
in R-8733; spot at W limb with radio int. 10 and 1 subflare in
R-8731; spot groups continue with radio int. 62 with 15 subfleres
in R-8740; spot on W limb with radio int, 23 and 1 subflare in
R-8741; br. green corona NE limb; mod. green corona SE limb.

Geophysical: magnetically extremely quiet, 3 Kp0o, 1 Kp0+, until
1200, increasing to slight activity after 1800.

Events: major: He (R-8740) impt. 2b 1916-2019 with SID, DSD, m, dm
and cm solar burst and m type IV; minor: Ha (R-8740) 2328 with SID
and dm and cm solar burst; EPL (R-8731) 0000 with SID, cm solar
burst and m type IV; APR (R-8741) 1043; ADFs (R-8727) 2210, (R-8733)
2210 and (R-8740) 2210.

Solar: spot groups continue with radio int. 20 and 2 subflares in
R-8733; 4 subflares in R-8731 at W limb; spot groups continue with
radio int. 82 and 10 subflares in R-8740; spot group continues with
radio int. 26 and 3 subflares in R-8741; br. green corona NE limb;
mod. green corona NW limb.

Geophysical: mostly magnetically quiet, 1 Kp0o, 4 Kp0+.

Events: minor: Ha (R-8740) 0726 with m and cm solar burst, (R-8731)
0748 with m solar burst; ADF (R-8738) 0619 and 2105; APR (S38 E Limb)
0805-2235; EPL (S22 E limb) 1715 m, dm and cm solar burst at 1830.

- 94 -



1966 10 cm
Jan. Flux

s

Sun-
spot mag.

No.

Geo-

Ap

CMP of
Region
Number

Highlights

30,0=«79

31L 78

February

76

5

78

7

78

79

BL

82

83

28

20

17

7

7

16

2

i

18

R-8154
(mas)

R-8158
(m6)

Soler: small spot persists, radio int. 8 end a subflare in
R-8139; small spot persists in R-8152; radio int. 8 and a
subflare in R-8254; small epot appears and a subflare in
R-8148.

Geophysical: continued magnetically quiet, especially 0000-
1200 Kp Oo000+0+ and 2100-2400 Kp Oo.

Solar: small spot persists and radio int. 6 in R-8139 at W
limb; small spot persists and 5 subflares in R-8152; radio
int. 6 in R-8154.

Geophysical: magnetically very quiet, four Kp Oo or 0+; fono-
apheric ¥ region relatively quiet.

Solar: small spot persiste in R-8152 at W limb; spot group
appears, radio int. 7 and 2 aubfleres in R-8158.

Geophysical: continued magnetically very quiet; ionospheric
¥ region relatively quiet.

Solar: spot group By, radio int. 12 and 8 subflares in R-8158}
radio int. 6 and a subflare again in R-8154; minor event!
Bo (R-8158) 0737E, 0935E, 1316 and 2326, (R-8154) 1506; at
2800 MHz, burst, 1505; at 1415 and 606 MHz, burst, 1512; at
18-41 Mz, IV, 1543; sudden disappearance of filament
(R-8154) 1507.

Geophysical: continued magnetically very quiet.

Solar: spot group no longer By but growing, radio int. 13 and
4 subflares in R-8158; radio int. 6 in R-8154; weak green
corona at N30 E limb,

Geophysical: magnetically quiet until slight-to-moderate
disturbance 1200-2400; an SL-SWF at 2033; at 2035-2040
short-lived rayed arc overhead at $= 63°, visible to $=
58°, over Western Europe.

Solar: spot group persists, radio int. 16, 21 cm radio noise
and a subflare in R-8158; radio int. 6 in R-8154; weak
green corona at N20 E limb.

Geophysical: slight magnetic disturbance; ionospheric absorp-
tion on 30 Mz at Great Whale River beginning at 0224.

Solar: spot group persists, radio int. 18 and 2 subflares in
R-8158; radio int. 8 in R-8154; minor event: Hy (N18 E83)
1529.

Geophysical: slight-to-moderate magnetic disturbance; iono-
spheric absorption continues on 30 MHz at Great Whale River
until 2240,

Solar: spot group persiste and radio int. 18 in R-8158; radio
int. 6 in R-8154.

Geophysical: slight magnetic disturbance 0000-0900, quiet
thereafter.

Solar: spot group persists, 21 cm radio noise, radio int. 13
and 2 subflares in R-8158; radio int. 6 and 2 subflares in
R-8154; minor events: Hx (R-8154) 1559 and 1605E; at 200
Mz, bursts, 1211 and 1320; at 2800 MHz, rise, 1545; active
dark filament (R-8154) 2326.

Geophysical: magnetically quiet.



Day 10 cm Sun~ Geo- Iono- CHP of Highlights
Flux spot mag. Index Region
$ No. Ap Ip Za Number
1967 January
08 = 52° 1400-1500 and 1900-2000, $ = 51° 1500-1900 and @ = 55°
(Cont'd) 1900-2200, homogeneous arc or band overhead in Western Europe
to ¢ = 66° with glow visible to = 58° the night of Jan. 8-9;
ionospheric F region very disturbed with widespread auroral
blackout at high latitudes.
Events: minor: Ho (R-8639) 1749 with dm solar burst; BSL (R-8629)

0309.
09150 111 12 0 1 R-8637 Solar: R-8629 begins transit over W limb, radio int. 15 and 7 sub-
(832) flares; several By spots continue, radio int. 20 and 4 subflares

R-8639(2) in R-8631; R-8628 over W limb; spot group continues, radio int.

22) 17 and 2 subflares in R-8632; spot continues, radio int. 46 and

9 subflares in R-8637; spot group increases in size, radio int.
40 and 8 subflares in R-8639; By spot continues, radio int. 15
and 2 subflares in R-8638; br. green corona NE and NW limbs.

Geophysical: slight magnetic activity; cosmic ray decrease maxi-
mum though begins to recover at end of day; aurora overhead in
U.S.S.R. to = 57° 1500-1600, = 56° 1700-1800 and 9 = 55°
1900-2000; ionospheric F region disturbed in some sectors.

Events: minor: Ho (R-8629) 2022 and 2234; m, dm and cm solar
burst at 1120; ADF (N29 B60) 0443-0755D and 2354-0220; BSLs
(R-8629) 1645-2345).

yo 151 111 4 (0) 0 Soler: several spots continue, radio int. 16 and 7 subflares in
R-8631; spot group decreases in size, radio int. 16 and 2 sub-
flares in R-8632; spot size decreases, radio int. 46 and 4 sub-
flares in R-8637; spot group increases in size, radio int. 48
and 4 subflares in R-8639; spot group continues, much larger in
size, radio int. 17 and 2 subflares in R-8638.

Geophysical: continued very slight magnetic activity except quiet
0300-1500 KpO+; cosmic ray decrease recovers.

Events: major: Ho (R-8631) impt. 2n 2053-2135 with BSL; minor:
Ha (R-8631) 0855 with Dkm, m, dm and cm solar burst and 1650;
Dkm, m and dm solar burst at 1315; dm and cm solar burst at 1925
with SID; SID with m solar burst at 0035; DSD (R-8631) 0215-1105,
(R-8638) 0246; BSLs (R-8631) 1600E-0005D; no solar x-ray obs.
from 2259 to Jan. 11 at 1507.

11145 104 16 0 2 R-8644 Solar: spot continues, radio int. 27 and 10 subflares in R-8631;
qua) spot gone, radio int. 13 and 1 subflare in R-8632; spot contin-
ues, radio int, 35 and 3 subflares in R-8637; spot group contin~
ues, radio int, 36 and 3 subflares in R-8639; spot group contin-
ues, radio int. 16 and 5 subflares in R-8638.
Geophysical: slight magnetic activity; aurora overhead in U.S.S.R.
to $ = 57° 1400-1700, $ = 58° 1700-1800 and ¢ = 56° 2000-2100.
Events: principal: Ho (R-8632) impt. 3b 0131-0317D with dm and
cm solar burst and Dkm and m type II; minor: Ha (R-8631) 0232,
0542, (R-8632) O344E, 1424 with dm solar burst; m, dm and cm
solar burst at 1235; dm and cm solar burst at 2020 with SID and
solar x-rays; SIDs at 1019 and 1645; Dim and m type II at 2054;
Dkm type IV at 2119; BSL (R-8631) 1630.

12144 90-2 0 2 Solar: spot gone, radio int. 17 and 2 subflares in R-8631; no spot,
radio int. 15 and 4 subflares in R-8632; spot continues, radio
int. 33 in R-8637; spot group continues, radio int. 32 and 2 sub-
flares in R-8639; spot group continues, radio int. 19 and 1 sub-
flare in R-8638; spot group appears, radio int. 10 and 1 subflare
in R-8644; spot group appears, radio int. 22 and 10 subflares in
R-8647; spot appears, radio int. 6 in R-8641; mod. green corona
SW limb; br. green corona NW limb.

() estimated from less than 24 hours data

-77-



Day 10 cm Sun- Geo-
Flux spot mag.
$__No. Ap

Tono- CMP of
Index Region
Ip Ia Number

Highlights

1967 February
03

(Cont! d)

04 141* 100 11

05.151* 72 15

06 153 89 7

* adjusted for burst

4 2  R-8674(2)
(N15)

(2) 2 R-8681
(s16)

R-8683

(N14)

3 0  R-8680(3)
(N27)

spot continues, radio int. 8 in R-8681; spot continues, radio int.
6 and 1 subflare in R-8673; large spot continues, radio int. 21
and 1 subflare in &-8682; no spot, radio int. 12 and 4 subflares
in R-8684; no spot, radio int. 8 and 2 subflares in R-8685,

Geophysical: mostly magnetically quiet; ionospheric F region rela~
tively quiet.

Event: major: Ha (R-8682) impt. 2b 0257-0403 with SID, m, dm and
cm solar bursts, also m and Dkm type II and IV and solar x-rays.

Solar: spot continues, radio int. 11 in R-8667; spot continues,
radio int. 10 and 1 subflare in R-8670; spot continues, radio int.
10 in R-8674; spot decreases in size, radio int. 8 in R-8671;
spot continues, radio int. 14 and 3 subflares in R-8680; spot
decreases substantially, radio int. 7 in R-8681; large spot
continues, radio int. 19 in R-8682; small spot appears, then
disappears, radio int. 7 in R-8683 small spot appears, radio
int. 12 and 6 subflares in R-8684; spot appears, radio int. 12
in R-8685.

Geophysical: very slight magnetic activity until 1500, slight-to-
moderate activity thereafter; weak auroral display in Western
Europe visible as glow to $ = 59° night of Feb. 4-5.

Event: major: Ho (R-8682) impt. 2b 1641-1902 with SID, dm and
cm solar burst, also Dkm type IV with m and Dkm type II and
solar x-rays.

Solar: spot continues, radio int. 8 in R-8667 as region goes
over W limb; spot continues, radio int. 12 and 2 subflares in
R-8670;. spot continues, radio int. 10 in R-8674; spot continues,
radio int. 12 and 2 subflares in R-8671; spot continues, radio
int. 13 and 1 subflare in R-8680; spot continues, radio int. 11
and 1 subflare in R-8681; spot continues, radio int. 21 and 1
subflare in R-8682; spot group increases, now By, radio int. 19
and 6 subflares in R-8684; spot continues, radio int. 13 in
R-8685; mod. green corona NE limb.

Geophysical: moderate magnetic activity until 0300, mostly slight
activity thereafter; ionospheric F region slightly disturbed in
some sectors.

Events: minor: Ho (R-8681) 1410 with Dkm, m, dm and cm solar
burst; SID at 0014 with m, dm and cm solar burst and solar
x-rays; EPLs (R-8667) 0050E, (R-8682) 2100; solar x-rays at
0345; ADF (R-8682) 1409-2355.

Solar: R-8670 goes over W limb, radio int. 11; spot gone, radio
int. 8 in R-8674; spot continues, radio int. 12 in R-8671;
spot size decreases, radio int. 14 in R-8680; spot continues,
radio int. 9 and 1 subflare in R-8681; spot group continues,
By type, radio int. 38 and 1 subflare in R-8682; spot group
increases, radio int. 28 and 8 subflares in R-8684; spot contin-
ues, radio int, 13 in R-8685; no spot, radio int.. 14 and 3 sub-
flares in R-8687.

Geophysical: mostly very slight magnetic activity.

Events: major: Ha (R-8687) impt. 2n 1833-1933 with SID, dm and
cm solar burst, solar x-rays, BSL and EPL; minor: Ha (R-8684)
0818; (R-8687) 0900, 2023.

() estimated from less than 24 hours data



1966

Both January and February 1966 were remarkably quiet jonospherically. The ionospheric disturbances
Jan. 20-26 and Feb. 19-25 appear to belong to a long sequence of recurrent disturbances with mean
period about 28 days which probably started in June 1965. Most of the larger ionospheric dis-
turbances of the last eight months are associated with this sequence. The very quiet periods also

form a similar sequence.
January

1 82 79 «18 2

5 80 77 8 4 (R-8122)
(NLL)

6 80 77 7 2 (R-8123)
Q2b

7 81 78 7 7 R-8116
(519)

8 81 78 LB 8 (R-8126)
(827)

Solar: spot group declining and two subflares in R-8107;
spot group declining in R-8110; new small spot group in
R-8116,

Geophysical: magnetically very quiet, five Kp 0o or 0+.

Solar: spot group continues to decline in R-8107; spot
group declining but two subfleres in R-8110; small spot
persists in R-8116; minor event: active dark filament
(R-8110) 1931.

Geophysical: moderate magnetic disturbance 0000-0300 Kp 4-,
quiet thereafter.

Solar: spot continues, one subflare in R-8107; small spot
persists, one subflare in R-8110; spot gone in R-8116;
moderately bright green corona in R-8117 at E Mmb.

Geophysical: magnetically quiet.

Solar: small spot continues in R-8107; small spot continues
in R-8110; moderately bright green corona, radio int. 7
and a’subflare in R-8117; three subflares in R-8116; minor
events: active dark filament (R-8116) 2106; br. surge
(R-8117) 2313; at 260 MHz, burst, 0700.

Geophysical: magnetically quiet except 1800-2100 Kp 5~.

Soler: small spot continues in R-8107; spot gone in R-8110;
21 cm radio noise, radio int. 8 and a subflare in R-8117.
Geophysical: continued magnetically quiet, especially 0900-

1500 and 1800-2100 Kp O+.

Solar: no spots; 21 cm radio noise, radio int. 8 and a sub-
flare in R-8117.

Geophysical: magnetically very quiet with 0300-2100 Kp
000000040404; ionospheric F region relatively quiet.

Solar: small spot, 21 cm radio noise and radio int. 7 in
R-8117; a subflare in R-8123.

Geophysical: continued magnetically quiet before a prelimi-
nary sudden commencement at 1501 followed by slight
magnetic disturbance,

Solar: small spot persists, 21 cm radio noise and radio
int. 7 in R-8117; small spot and a subflare in R-8122;
subflare in R-8124,

Geophysical: slight magnetic disturbance until 0300 Kp 3+.



Day 10 cm Sun- Geo-

Tono- CMP of
Index Region
Ip Ja Number

Highlights

Flux Spot mag.
S No. Ap
1967 Hay
26
(cont'4)
27208 194 20
28.197 197 $5

© 4 R-8821(2)
(N16)

Events: major: Ha (R-8821) 0156-0311 impt. 2n with cm and dm solar
burst and SID; minor: Ha (R-8821) 0208 with SID; Ho (R-8818) 0903
with om and dm solar burst and SID, 1230 with cm and dm solar burst,
solar x-rays and SID, 1340 with cm and dm solar burst and SID, 1514
with cm and dm solar burat, and 1522 with cm and dm solar burst and
SID; Ha (R-8819) 0916, cm, dm, and m solar burst 0705 with SID; cm
solar bursts OO00E-1110 and 1205-2200; dm solar bursts 1235-1950;

m noise storm O000E-1455 and 1740-2400D; SID 0835, 1730, 1950, 2205
with DSD (R-8824) and 2335; DSD (R~8819) 0845-0950 and (R-8824)
2300-2345.

Solar: spot groups continue with radio int. 108 and 15 subflares in
R-8818; spot groups continue to grow with radio int. 36 in R-8819;
spot groups growing with radio int. 34 and 5 subflares in R-8821;
spot groups continue with radio int. 36 and 11 subflares in R-8824;
spot continues with radio int. 27 in R-8829; spot continues with
radio int. 7 and 1 subflare in R-8825; radio int. 27 in location
of R-8831 at E Limb.

Geophysical: mostly slight-to-moderate magnetic activity, though only
very slight activity during middle of the day; ionospheric F re-
gion slightly disturbed in some sectors; PCA event ends,

Events: major: Ha (R-8818) 0130-0310, impt. 2n with cm solar burst
and SID; minor: Ha (R-8824) 0000 with em solar burst, DSD and SID;
Ho (R-8818) 0159, 1332 with cm and dm solar burst and 2353 with em
solar burst; Ho (R-8828) 0602 with cm and dm solar burst; Ho (R-
8830) 0831 with APR; Ho (R-8821) 1110 with SID, and 1231; Ha (R-
8831) 1532; cm and dm solar bursts 0430-1055 and 1325-1805, 2205,
and 2240-2400D; DSD (R-8824) 0045-0135 and (N30 E19) 2100-2150, EPL
(R-8830) 2045-2120; SID at 0110, 1440, and 1510.

Solar: spot groups continue with radio int, 100 and 9 subflares in
R-8818; spot groups continue with radio int, 30 and 3 subflares in
R-8819; spot groups continue with radio int. 38 and 3 subflares in
R-8821; spot groups decreasing with radio int. 26 and 4 subflares
in R-8824; spot growing with radio int. 25 and 1 subflare in R-
8829; small spot continues with radio int. 8 and 4 subflares in R-
8825; spot with 3 subflares in R-8830; spot at E limb with radio
int. 35 and 5 subflares in R-8831.

Geophysical: continued slight-to-moderate magnetic activity until
moderately severe storm develops after sc at 1302, 1 Kp 7-3 PCA
event 0640, >48 hours duration, peak absorption 3.5 db, 0800-1800;
ionospheric F region very disturbed with auroral and PCA absorption
at high latitudes.

Event#: principal: Ha (R-8818) 0527-0712, impt. 3b with cm, dm, and
m solar burst, solar x-rays and SID; major: Ha (R-8818) 0707-0805,
impt. 2n with cm solar burst; minor: Ho (R-8818) 0022 with cm
solar burst, solar x-rays and SID, 0530 with cm, dm, and m solar
burst, 0718 with cm and dm solar burst, 0730 with cm and dm solar
burst and SID, 0900, and 1015 with m solar burs' Ha (R-8831) 0352
with cm solar burst; SID at 0015, 1900, and 2200; cm, dm, and m
solar bursts 0530-1020, cm and dm solar bursts 1415-1600, 1725,
and 2020-2340; APR (R-6830) 0645-1600, EPL (S43 W limb) 1225-1540,
ADF (R-8818) 1550-1845, and BSL (N09 W limb) 1640-1725,

- 111 -



Day 10 cm Sun~ Geo-
Flux spot mag.
S No. Ap

Tono-
Index
Ip ta

CMP of
Region
Number

Highlights

1967 January
26159 13604

27 163 130 4

28161 #125 12

29 :163* 122 4

30 164 132 3

* adjusted for burst

(0) 0

00

(8) 5

R-8661
(18)

R-8662 (2)
(S26)

R-8663
(N19)

R-8667 (2)
($24)

Solar: By-spot group continues, radio int. 22 and 4 subflares
in R-8650; multiple spot groups increase in size, radio int.
36 and 11 subflares in R-8659; spot gone, 2 subflares in
R-8654; spot gone in R-8663; spot continues, radio int. 27
and 4 subflares in R-8667; small spot appears, radio int. 5
in R-8669; large spot group appears, radio int. 18 and 3 sub-
flares in R-8670; no spot in R-8661.

Geophysical: continued magnetically quiet; ionospheric F region
relatively quiet.

Events: minor: Ho (R-8659) 1144 with dm and cm burst; Dkr, m,
and cm solar burst at 1350 with SID and solar x-rays at 1325;
APR (S25 E limb) 1240E.

Solar: spot group decreases substantially in size, radio int.
15 and 1 subflare in R-8650; multiple spot groups increase in
size, radio int. 46 and 6 subflares in R-8659; spot continues,
radio int. 24 and 2 subflares in R-8667; spot continues, radio
int. 5 in R-8669; spot group continues, radio int. 19 and 3 sub-
flares in R-8670; small spot group appears, radio int. 6 in
R-8661; br. green corona NE limb; mod. green corona SE limb.

Geophysical: continued magnetically quiet.

Events: minor: Ha (R-8650) 1511; (R-8659) 2004 and 2320 both
with em solar bursts and SID at 2321.

Solar: spot group continues, radio int. 9 and 1 subflare in
R-8650; multiple spot groups increase, becoming extremely
large in total size, radio int. 37 and 9 subflares in R-8659;
spot continues, radio int. 26 and 6 subflares in R-8667; spot
group continues, radio int. 18 and 1 subflare in R-8670; small
spot group continues, radio int. 6 in R-8661.

Geophysical: slight~to-moderate magnetic activity; ionospheric
PCA event, ionospheric F region slightly disturbed in some
sectors.

Events: solar proton: Ha (R-8670) 0514E (or perhaps evidence
for a backside flare) with m, dm and cm solar burst and ground
level neutron count increase 16% at Deep River; minor: (R-8667)
0943, 2230; cm solar burst at 1515; Dkm and m type II at 0754.

Solar: R-8650 over W limb; single spot group continues, radio
int. 33 and 11 subflares in R-8659; spot continues, radio int.
24 and 3 subflares in R-8667; spot group continues, radio int.
21 and 4 subflares in R-8670; small spot group continues, radio
int. 6 in R-8661; spot appears, radio int. 14 and 2 subflares
in R-8671; spot appears, radio int. 13 and 2 subflares in R-8673.

Geophysical: very slight magnetic activity to 0900 followed by
magnetically quiet; ionospheric PCA event continues,

Events: major: Ha (R-8667) impt. 2n 1613-1723 with m, dm and cn
solar burst and SID; minor: Ho (R-8659) 2040 with dm solar
burst and 2354 with m, dm and cm solar burst and SID; m, dm and
cm bursts at 1300 and 1530; SID at 2224; ADF (N34 E34) 0230E.

Solar: spot group continues, size slightly less than combined
total but still very large, radio int. 33 and 5 subflares in
R-8659; spot continues, radio int. 22 and 7 subflares in R-8667;
spot group decreases in size, radio int. 26 and 6 subflares in
R-8670; spot gone in R-8661; spot group appears, radio int. 15
in R-8674; spot continues, radio int. 9 and 4 subflares in
R-8671; spot continues, radio int. 9 and 4 subflares in R-8673;
spot appears, radio int. 15 and 3 subflares in R-8680; br. green

() estimated from less than 24 hours data

- 81 -



Day 10 cm Sun- Geo- Iono- CMP of
Flux spot mag. Index Region
S_No. Ap Ip Ia_ Number

+Highlights

1967 May
15109 43 6 O O  R-8807(2)
(824)

16 111 44 6 0 0

17113, 44 «11 0 0 R-8810(2)
(N27)
R-B809
(S16)

18 122 55 7°02

19 132 70 8 O 2 R-8813
(s16)

* adjusted for burst

Solar: radio int. 9 in R-8807; spot continues with radio int. 8
and 2 subflares in R-8809; spot continues with radio int. 13 in
R-8810; spot disappears in R-8813; spot group at E limb with radio
int. 18 and 9 subflares in R-8816; 2 subflares in R-8803; br. green
corona NE limb.

Geophysical: continued slight magnetic activity becoming quiet 0300-
1800, 1 KpOo, 2 Kplo, 2 Kpl+, increasing to very slight thereafter.

Events: minor: Ho (R-8816) 0701, 0807, 0857 with cm solar burst,
0924 with cm, m and dm solar burst, and 1009 with dm and m solar
burst and solar x-rays; APR (R-8816) 0425 and BSL (R-8816) 0935;
SID at 1130.

Solar: radio int. 9 and 5 subflares in R-8807; spot size increasing
with radio int. 8 and 2 subflares in R-8809; spot continues with
radio int. 14 and 7 subflares in R-8810; spot size decreasing with
xadio int. 13 in R-8816; 1 subflare in R-8803; mod. green corona
NE limb.

Geophysical: mostly magnetically quiet, 1 Kplo, 4Kpl+.

Events: minor: Ho (R-8809) 0701 with m solar burst; Ha (R-8818) 1036.

Solar: radio int. 10 in R-8807; spot group size increasing with radio
int. 14 in R-8809; spot continues with radio int. 12 in R-8810; spot
continues with radio int. 14 and 2 subflares in R-8816; radio int.
12 and 2 subflares in area of R-8818 at E limb.

Geophysical: very slight magnetic activity 0600-1800, slight activity
otherwise; cosmic ray recovery complete.

Events: minor: Ho (R-8810) 0948; Ha (R-8818) 1958; APR (R-8818)
0835-1215; m solar burst 2330.

Solar: radio int. 9 in R-8807; spot group continues with radio int.
12 and 2 subflares in R-8809; spot continues with radio int. 12 and
1 subflare in R-8810; a second spot group appears classified By with
radio int. 21 and 5 subflares in R-8816; spot at E limb with radio
int. 30 and 7 subflares in R-8818.

Geophysical: very slight magnetic activity until 0900, quiet there-
after, 5 Kpl+.

Events: minor: Ba (R-8809) 0719; Ha (R-8818) 0750, 0851 with cm and
m solar burst, 1347 and 1934 with SID; solar x-rays 0258 with cm
solar burst; SID at 1600 with cm and m solar burst; solar x-rays
1724; SID at 1825 with om and m solar burst and m type IV; ADF
(833 E45) 2110-2310; solar x-rays 2310 with cm and m solar burst;
SID at 2345 with em, dm and m solar burst. ~

Solar: radio int. 10 in R-8807; spot size decreasing with radio int.
7 and 4 subflares in R-8809; radio int. reaches 6 with 3 subflares
in R-8806; spot continues with radio int. 12.in R-8810; spot groups
continue with radio int. 25 in R-8816; a second spot group at E limb
with radio int. 42 and 12 subflares in R-8818; radio int, 17 in
R-8819 at E limb; br. green corona SE limb; mod. green corona NE limb.
Geophysical: slight magnetic activity until 0900 subsiding to quiet to
very slight thereafter; aurora over North America, $ = 60°, 0600-1100.

- 107 -



Day 10 cm Sun- Geo~
Flux spot

SN

io.

mag.
Ap

Iono- CMP of
Index Region
Ip Ia Number

Highlights

1967 March
09
(Cont'd)

10 150

i 144

12 136

13 131

14 129

74

65

49

4h

8

(0) 1

Geophysical: continued magnetically quiet until 0900, increasing to
slight-to-moderate activity after 2100.

Events: minor: APR (R-8708) 1000 with SID, solar x-rays, and Dkm,
mand cm solar bursts; ADF (S56 W limb) 1340-2350; m solar noise
storm.

Solar: spot group goes over W limb with radio int. 20 and 3 sub-
flares in R-8711; spot group at W limb with radio int. 22 and 3
subflares in R-8714; spot group continues with radio int. 34 and
5 subflares in R-8715; spot group continues with radio int. 54
and 1 subflare in R-8716.

Geophysical: continued slight-to-moderate magnetic activity until
0600, subsiding to quiet.

Events: minar: APR ($59 W Limb) 1615-2120; Dkm type IV at 1320E-
0050; m solar noise storm.

Solar: spot over W limb, radio int. 14 and 5 subflares in remains
of R-8711; spot group decreasing with radio int. 25 and 7 sub~
flares in R-8715; spot group size decreasing with radio int. 37
and 2 subflares in R-8716; small spot with radio int. 14 and 2
subflares in R-8722; mod. green corona SW and NW limbs.

Geophysical: mostly magnetically extremely quiet 3Kp0o, 3 Kp0+;
ionospheric F region relatively quiet.

Events: minor: Ha (R-8711) 0540, 0713 with m noise storm, 1357
and 1608; SID at 1315 with Dkm and cm solar burst; provisional
PCA begins about 2010.

Solar: radio int. 10 and 1 subflare in R-8711 over W limb; spot
group continues to decrease in size with radio int. 22 and 10
subflares in R-8715; spot group decreasing with radio int. 37
and 1 subflare in R-8716; spot with radio int. 16 in R-8722;
spot appears on E limb with radio int, 12 and 1 subflare in
R-8727; mod. green corona NE limb.

Geophysical: magnetically quiet, 1 Kp0o, 3 Kp0+; ionospheric F
region relatively quiet; provisional PCA continues.

Events: minor: Ha (R-8711) 0140 and 1049 with EPL.

Solar: spot group near W limb with radio int. 26 and 2 subflares
in R-8715: spot group continues to decrease with radio int. 26
and 6 subflares in R-8716; spot with radio int. 13 in R-8722;
spot with radio int, 13 and 3 subflares in R-8729; spot group
with radio int. 14 and 5 subflares in R-8727; br. green corona
NE limb.

Geophysical: very slight magnetic activity 0600-1800, quiet other-
wise; provisional PCA continues.

Event: minor: EPL (R-8715) 0825 with m solar burst,

Solar: radio int. 15 and 2 subflares in R-8715; spot group at W
limb with radio int. 19 and 3 subflares in R-8716; spot with
radio int. 14 and 2 subflares in R-8729; spot group with radio
int. 16 and 7 subflares in R-8727; br. green corona NE and NW
limbs.

Geophysical: slight magnetic activity until 0300, mostly quiet
remainder of the day; provisional PCA ends early in day.

Events: minor: Ho (R-8727) 0807; EPL (S21 W limb) 1419-2400; APR
(R-8730) 1950-2400; solar x-rays 2142.

() estimated from less than 24 hours data

-~ 92 -



1966 10 cm Sun- Geo-
Oct. Flux spot mag.
SS, No. Ap

CMP of
Region
Number

Highlights

16
Cont'd)

17: 121*120% 70

o

8  120%118%* 70 4

19 116*116* 76 4

20 «125 124 96 4

21 122*121* 91 2

* adjusted for burst

R-8546 (2)
N20)

Geophysical: moderate magnetic activity, 1 Kp60; SID at 1902,
2050 and 2311; cosmic ray decrease most intense, begins gradual
recovery lasting until Oct. 19; aurora overhead at $ = 58° over
North America 0600-1100, rays overhead at ¢ = 54° over U.S.S.R.
1100-1600 and homogeneous bands overhead at $ = 56° 1300-1900;
ionospheric F region very disturbed with some auroral blackout
at high latitude.

Solar: large spot continues, radio int. 22 and 21 cm radio noise
in R-8545; large spot group continues, radio int. 39, 21 cm
radio noise and 8 subflares in R-8546; br. green corona NW limb;
moderate green corona NE limb; major events: Hy (R-8546) impt.
2b, 0426-0548 with cm. solar burst and active dark filament;
minor events: Ha (R-8546) 0246 with cm. solar burst and 1010
with cm. solar burst; cm. and m, solar burst 0030; m. noise
storm 0805-1610.

Geophysical: very slight magnetic activity; SID at 0046, 0239,
0343, 0420 and 1005; ionospheric absorption at 30 Miz at Great
Whale River recovers; medium length auroral rays of medium
brightness overhead at ¢ = 60° over U.S.S-R. 0700-1000, rayed
arcs at ¢ = 56° 1100-1700, short rays at ¢ = 54° 1400-1600,
and homogeneous arc at ¢ = 56° 1800-1900; ionospheric F region
still slightly disturbed on some sectors.

Solar: large spot continues, radio int. 20 and 21 em radio noise
in R-8545; large spot group decreases in size, radio int. 40,
21 cm radio noise and 7 subflares in R-8546; very small spot
appears, radio int. 10 and 1 subflare in R-8553, then disappears;
br. green corona NW limb; moderate green corona NE limb; minor
events: cm. noise storm 1700-0200.

Geophysical; slight magnetic activity 0000-0300, quiet thereafter.

Solar: large spot continues, radio int. 16, 21 cm radio noise and
1 subflare in R-8545; large spot group continues, radio int. 28,
21 om radio noise and 5 subflares in R-8546; radio int. 10 in
R-8553; spot sppears, radio int. 12 in R-8554; moderate green
coronae NE and SE limb.

Geophysical: continued magnetically quiet; cosmic ray decrease
recovers.

Solar: large spot continues, radio int. 17, 21 cm radio noise
and 1 subflare in R-8545; large spot group continues, radio int.
42, 21 cm radio noise and 9 subflares in R-8546; radio int. 16
and 1 subflare in R-8553; spot decreases in size, radio int. 10
in R-8554; spot group appears, radio int. 16, 21 em radio noise
and 13 subflares in R-8556; minor events: Ho (R-8553) 0113 with
dark surge, (R-8554) 0528 and (R-8546) 1612, 1900 and 2152 with
cm. solar burst; cm., m. and dm. solar bursts 1200-1500; cm.
and m. solar burst 1905 and 2030; m, noise storm 2305-0000; dark
surges (R-8553) 0537E and 1018.

Geophysical: continued magnetically quiet; SID at 2039 and 2154;
ionospheric F region relatively quiet.

Solar: large spot continues, radio int. 17, 21 cm radio noise in
R-8545; large spot group continues, radio int. 39, 21 cm radio
noise and 6 subflares in R-8546; spot continues, radio int. 12
and 21 cm radio noise in R-8554; spot group continues, radio int.
15, 21 cm radio noise and 10 subflares in R-8556; minor events:
m. noise storm 0650-1500 and cm. noise storm 1230-1900; active
prominence region (N60 W limb) 1038.

Geophysical: magnetically extremely quiet, 4 KpOo, 2 Kp0t; iono-
spheric F region relatively quiet.



1966 10 cm Sun- Geo-

Sep. Flux spot mag.
Ss.

Sa No.

Ap

CMP of
Region
Number

Highlights

25
(Cont'd)

26 109 109 54

27° 100 100 48

28 #98 «98 35

29° 98 «98 = «640

30 95 96 38

22

18

22

7

16

R-8516
(N23)

R-8522
(816)

Geophysical: moderate magnetic activity 0000-0900, quiet
until slight activity 2100-2400; at 0000-0100 homogeneous
auroral band overhead at = 61° and at 2000-2100 homo-
geneous arc at § = 61° over U.S.S.R.; aurora at $ = 57°
over North America 0600-1100.

Solar: spot group continues, radio int. 16, 21 cm radio
noise and 5 subflares in R-8509; spot group decreases in
size, radio int. 37, 21 cm radio noise and 5 subflares in
R-8516; spot gone, radio int. 14, 21 em radio noise and
5 subflares in R-8505; moderate green corona at NW limb;
minor events: Ha (R-8509) 1725; cm. solar burst 0945; cm.
and m. solar burst 1522-1635; active prominence region and
eruptive prominence at limb (N11 W limb) 1725E.

Geophysical: slight~to-moderate magnetic activity; SEA,
SPA and SES at 0938; SL-SWF, SPA and SES at 1519; at 1900
homogeneous auroral band overhead at # = 59° over U.S.S.R.

Solar: spot group decreases in size, radio int. 15, 21 cm
radio noise and 2 subflares in R-8509; spot group continues,
radio int. 30, 21 cm radio noise and 4 subflares in R-8516}
spot appears in R-8522; moderate green corona at NW limb;
minor events: type IV, 20-41 Miz, 1313-1443; em. and m.
solar bursts 1145-1630; loops (R-8509) 1400 and 1420; active
prominence region (R-8509) 0653-1600.

Geophysical: slight-to-moderate magnetic activity continues;
S-SWF, SCNA and SPA at 0015; ionospheric F region slightly
disturbed; at 1800 auroral rays overhead at 6 = 61° and at
1900-2100 homogeneous arc at § = 60° over U.S.S.R.3 aurora
at 6 = 57° over North America 0000-0500.

Solar: spot group decreasing in size, radio int. 26, 21 cm
radio noise, and 4 subflares in R-8516; spot continues in
R-8522; 21 cm radio noise in R-8514; minor events: HY
(R-8528) O740E.

Geophysical: slight-to~moderate magnetic activity continues;
at 1200 homogeneous auroral band overhead at 6 = 58°, at
1900 rayed band at = 60° and at 2100 homogeneous band
at 6 = 60° over U.S.S.R.

Solar: spot group decreases in size, radio int. 24, and 7
subflares in R-8516; spot appears in R-8527; spot continues,
radio int. 6 and 1 subflare in R-8522; minor events: HY
(R-8516) 0823 with cm. and m. solar bursts.

Geophysical: slight-to-moderate magnetic activity continues}
at 1100 homogeneous auroral arc overhead at $ = 61°, at
1200-1400 striated are at # = 61° and at 1700-1800 striated
band at § = 60° over U.S.S.R.

Solar: 8y spot group, radio int. 32, and 4 subflares in
R-8516; spot continues in R-8527; spot continues, radio
int. 7 and 2 subflares in R-8522; moderate green corona at
NW limb; minor events: active dark filament (N32 W56) 1725.

Geophysical: slight-to-moderate magnetic activity continues;
SFD at 0842; at 1300-1600 homogeneous auroral are overhead
ac § = 62° and at 1700-1900 homogeneous band at # = 61°
over U.S.S.R.



Highlights

Solar: spot group decreasing in size, radio int. 26, 21 cm
vadio noise, and 8 subflares in R-8207; small spot
continues in R-8218; major events: Ha (R-8207) impt. 2n,
0021-0120 and impt. 2b, 1843E-1919 with cm. and m. solar
bursts; minor events: Ha (R-8207) 0131E, 0935E, 17095;
cm. solar bursts 0510, 1040, 1100, and 1240; m. solar
bursts 1100 and 1240.

Geophysical: slight magnetic disturbance continues becoming
severe 1200-1500 Kp6-3; S-SWF, SCNA and SPA at 0038; SCNA
at 1210 and 1251; SL-SWF, SEA, SES and SFD at 1848; cosmic
ray decrease continues; ionospheric F region very disturbed.

Solar: spot group, radio int. 14, 21 cm radio noise, and
5 subflares in R-8207 at W limb; spot group appears, radio
int. 25, 21 cm radio noise, and 6 subflares in R-8223;
spot gone in R-8218; minor events: Ha (R-8207) 07505;
(R-8223) 2256; cm. solar bursts 1310 and 1530; m. solar
bursts 0910, 1120, 1310, 1530, and 1630; br. surge
(R-8207) 0810.

Geophysical: slight magnetic disturbance continues; S-SWF,
SEA, SPA, and SES at 1200; SL-SWF at 1513; cosmic ray
decrease continues; ionospheric absorption on 30 Miz at
Great Whale River 0110-2130.

Solar: spot group gone, radio int. 8 and a subflere in
R-82073 spot group continues, radio int. 40, 21 om radio
noise and 8 subflares in R-8223; small spot in R-8220;
radio int. 11 at N10 £40; major events: Ho (R-8207)
impt. 2b, 1441-1523 with cm. and m. burst; eruptive
prominence (R-8207) 1512E; minor events: Ha (R-8223)
0150E, 0326, 0435E, 1148, 1542, 1821, 1843, 1910, 2042,
2306, and 2355; cm. solar bursts 0355, 0500, 1220, 1910,
and 2350.

Geophysical: magnetic disturbance continues becoming
moderate-to-severe, 1800-2100 Kp70; S-SWF, SCNA, and SEA
at 0400; SFD at 1805; S-SWF, SPA, SFD, SCNA,SEA, and SES
at 1907; S-SWF and SCNA at 2357; cosmic ray decrease
continues; ionospheric F region very disturbed with
auroral absorption at high latitudes; ionospheric
absorption on 30 MHz at Great Whale River 0505-2130;
bright auroral rays overhead at gTM 57° at 1100, bright
rayed are at §= 57° at 1200, striated arc at ¢ = 57° at
1300 and bright rays at ¢= 54° from 1900-2100 in U.sS.S
homogeneous arc, suddenly appeared near 2030 overhead at
= 59° and persisted changing occasionally to a series of
parallel bands, until 2115, visible to ¢= 54° in Western
Europe.

25

Solar: spot group growing and By, radio int. 47, 21 cm
radio noise, and 9 subflares in R-8223; spot appears,
radio int. 11 and 6 subflares in new region R-8227; br.
green corona on NW limb; radio int. 11 at N10 E33; major
event: Ho (R-8223) impt. 2b, 0324-0418 with cm. solar
bursts; minor events: Ha (R-8223) 01018, 0800E, 0940E,
1045E, 1338, 1441, 1504, 1746, 2151, and 2358; cm. solar
bursts 0020, 0110, 0220, 0350, 0520, 0535, 0600, 0630,
0700, 0710, 0820, 0910, 0950, 1015, 1110, 1330, 1510,
1830, and 2335; m. solar bursts 0020, 0110, 0700, 0820,
0950, 1035, 1110, 1300, 1330, and 1830; type IV, 10-41 Maz,
1812-1940; dark surge (R-8223) O800E.



1966 10 cm Sun- Geo-
Aug. Flux spot mag.
S Sa No. Ap

CUP of
Region
Number

Highlights

22103 106 «38 4

23:112 115 65 «22

24 119%122* 71 16

25 124*126* 89 8

26128 130 «95 6

* adjusted for burst

Solar: no spot, radio int. 12 on W limb in R-8435; no spot,
radio int. 10 on W limb in R-8438; small spot appears, radio
int. 6, 21 cm radio noise, and 1 subflare in R-8457; small
spot appears, radio int. 18, 21 cm radio noise and 1 sub-
flare in R-8460; spot group appears, radio int. 22, and 2
subflares in R-8461; spot appears, radio int. 13, 21 cm
radio noise and 1 subflare in R-8459; minor events: HY
(R-8461) 0403 with br. surge on limb and 0752E with br.
surge on limb, (R-8457) 0718E and 2258 with dark surge,
(R-8459) 2113 with sudden disappearance of filament and
23308; active prominence region (N45 E limb) 0910 and 1055.

Geophysical: continued magnetically quiet; ionospheric F
region relatively quiet.

Solar: small spot decreases in size, radio int. 17, 21 cm
radio noise in R-8460; spot group increases in size, radio
int. 28, 21 cm radio noise in R-8461; 8y spot continues,
radio int. 11 and 4 subflares in R-8459; radio int. 12 and
1 subflare in R-8454; minor events: Hy (R-8459) 0036, 0720,
0900E with em. solar burst, and 0954 with em. solar burst
(R-8461) 0950 with cm. solar burst (R-8454) 1013E with cm.
and m. solar bursts with br. surge.

Geophysical: slight-to~moderate magnetic activity; SL-SWF at
1754; rayed arc, base overhead in 67° over Western Europe,
rays seen extending between 2250 and 0200 (Aug. 24) to ele~
vation 20° in 59°.

R-8447
(N15)

R-8442(2)
(N40)

R-8454
N08)

Solar: small spot continues, radio int, 13, 21 cm radio
noise in R-8460; spot group increases in size, radio int.
24, 21 em radio noise and 7 subflares in R-8461; small
spot group appears, radio int. 33 and 2 subflares in
R+8454; no spot, radio int. 14 and 2 subflares in R~8447;
spot continues, radio int. 19 and 1 subflare in R-8459;
radio int. 10, 21 cm radio noise in R-8467; br. green
corona at NW and NE limbs; minor events: HY (R-8467) 0805E
with m. solar burst and active prominence region and br.
surge, (R~8461) 0823; m. solar burst 1450-1500; type II,
20-41 MHz, 1536-1540; active dark filament (R~8454) 2114
and 2315.

Geophysical: slight-to-moderate magnetic activity continues.

Solar: small spot continues, radio int. 15, 21 cm radio
noise, and 2 subflares in R-8460; spot group decreases in
size, radio int. 24, 21 cm radio noise and 3 subflares in
R-8461; spot group increases in size, radio int. 37, 4
subflares in R-8454; small spot appears, radio int. 24 in
R-8447; spot continues, radio int. 13 and 4 subflares in
R-8459; spot appears, radio int. 12, 21 cm radio noise in
R-8467; moderate green corona at NE limb; minor event:
Fe (R-8454) 0620 with em. solar burst; cm. noise storm
1225-2015; em., m., and dm. solar bursts 1400 and em. and
m. solar bursts 1730-2000; active dark filament (R-8454)
0000; eruptive prominence at limb (N48 E limb) 1735.

Geophysical: very slight magnetic activity; S-SWF, SCNA,
SEA, SPA and SES at 0621; SL-SWF and SPA at 1357.

R-8457
41)

Solar: small spot continues, radio int. 20, 21 em radio
noise, and 3 subflares in R-8460; BY spot group continues,
radio int. 45, 21 cm radio noise and 5 subflares in R~8461;
BY spot group increases in size, radio int. 39, 21 cm radio
noise and 3 subflares in R-8454; small spot continues, radio
int. 13, 21 cm radio noise in R-8447; small spot appears,
radio int. 12, 21 cm radio noise and 5 subflares in R~8467;

- 47 -



1966 10 cm Sun= Geo-
Sep. Flux spot mag.
S_Sa__No. Ap

CMP of
Region
Number

Highlights

5 99100 26 13

6 96 98 30 24

7 94% 96" 36 14

8 95* 96* 38 42

9 94 95 39 LIL

&

* adjusted for burst

R-8484
(s21)

R-8487 (2)

(s16)

Solar: spot size increases, radio int. 13, 21 cm radio noise
and 14 subflares in R~8467; radio int. 12, 21 cm radio noise
on E limb in R-8496; no spots, 21 cm radio noise in R-8484
and R-8487; major event: Hy (R-8496) impt. 2b, 1109-1226D;
minor events: HY (R-8467) 1507E with m. solar burst; active
prominence region (R-8461) 0805E-1600.

Geophysical: slight-to-moderate magnetic activity 0900-1800;
S-SWF and SPA at 0223; G-SWF and SPA at 0303; SCNA at 1246;
SPA at 1750; SES at 1800; SPA and SFD at 2021; ionospheric
F region slightly disturbed with some auroral blackout at
high latitudes, PCA slowly decreases as shown by f min; at
1400 short auroral rays overhead at ¢ = 58° and at 1800
homogeneous band at 6 = 60° over U.S.S.R.

Solar: spot size decreases, radio int. 8, 21 cm radio noise
and 5 subflares in R-8467; spot appears, radio int. 12, 21
em radio noise and 6 subflares in R-8496; small spot, radio
int. 12 in R-8491; no spots, 21 cm radio noise in R-8484
and R-8487; minor events: HY (R-8496) 0329; eruptive promi-
nence (N62 W limb) 1730.

Geophysical: moderate magnetic activity; ionospheric absorp-
tion on 30 Miz at Great Whale River ends at 2340; ionospheric
F region slightly disturbed, PCA slowly decreasing; at 1560-
1600 homogeneous auroral band overhead at § = 61° over U.S.S.R.

Solar: spot becomes spot group, radio int. 6, 21 cm radio
noise and 6 subflares in R-8496; small spot appears, 21 cm
radio noise in R-8484; no spot, 21 cm radio noise in R-8487;
21 cm radio noise in R-8467; small spot appears, radio int.
6, 21 cm radio noise, in R-8495; moderate green corona at
NW limb; minor event: Ha (R-8496) 2105.

Geophysical: slight magnetic activity continues; SFD at 2116;
ionospheric absorption on 30 MHz at Great Whale River again
occurs until 2234; aurora at $ = 59° over North America
0600-1100.

Solar: spot group size decreases, radio int. 5, 21 cm radio
noise and 7 subflares in R-8496; small spot continues, ra~
dio int. 7, 21 cm radio noise and 4 subflares in R-8484;
no spot, 21 cm radio noise in R-8487; small spot continues
in R-8495; minor events: Ha (R~8496) 1615 with cm. solar
burst; m. solar burst 0620-0640 and cm. and dm. solar bursts
0725-0740; cm. solar bursts 1615 and 1903-1945; br. surges
(N41 W limb) 0642E and 1437E.

Geophysical: moderate magnetic storm; SFD at 1907; cosmic ray
decrease recovers; ionospheric F region disturbed with some
auroral blackout at high latitudes; at 1000-1100 komogeneous
auroral are overhead at # = 63°, at 1200-1400 patches at
$ = 60°, at 1500-1600 homogeneous are at ¢ = 59°, at 1900
homogeneous band at ¢ = 59° and at 2000 short rays overhead
at # = 60° over U.S.S.R.; aurora at 6 = 59° over North Ameri-
ea 0000-0500 and 0600-1100; glow of aurora on horizon visible
to latitude ¢ = 57° over Western Europe between 2110 and 2120.

Solar: spot group continues, radio int. 9, 21 cm radio noise
and 6 subflares in R-8496; small spot increases in size and
becomes spot group, radio int. 11, 21 cm radio noise and 11
subflares in R-8484; no spot, 1 subflare in R-8495; minor
events: and dm. solar bursts 0725 and 0855-1050.

Geophysica. slight~to-moderate magnetic activity continues;
donospheric F region disturbance dies away; at 1500-1800
short auroral rays overhead at # = 59°, at 2100 homogeneous
arc at $ = 60° and at 2200 homogeneous band at $ = 60° over
U.8.S.R.

-51-



Day 10 cm Sun- Geo- Iono- CMP of Highlights
Flux spot mag. Index Region
S No. Ap Ip Za Number
1967 January
21

radio int. 8 in R-8662.

(Cont'd) Geophysical: very slight magnetic activity.

Events: major: Ho (R-8659) impt. 2b 2131-2224 with m solar burst,
Dkm and m type II, Dim type IV, SID and solar x-rays; minor: solar
x-rays at 0835: BSL (R-8662) 1015.

22144 134 4 0 0 R8650 Solar: spot group gone, radio int. 6 and 1 subflare as R-8647 goes

(N16) over W limb; spot decreases, radio int. 6 and 1 subflare in R-8648;
R-8652 spot decreases, radio int. 23 and 4 subflares in R-8650; spot group
(S17) continues, radio int. 10 in R-8651; multiple spots decrease, radio
R-B655 int. 29 and 12 subflares in R-8659; spot group decreases, radio int.
(N27) 12 and 2 subflares in R-8654; small spot continues, radio int. 15

in R-8655; small spot appears, radio int. 5 in R-8660; small spot
appears, radio int. 7 in R-8663; spot appears, radio int. 6 in
R-8661; no spot, radio int. 9 in R-8662; mod. green corona NE and
SE limbs.
Geophysical: magnetically quiet after very slight activity to 0300.
Events: minor: Ha (R-8659) 0030 and 2054; solar x-rays at 0630;
SID with m solar burst at 1909.

23154" 152 5 0 0 Solar: spot increases in size as R-8648 goes over W limb; spot
decreases, radio int. 17 and 7 subflares in R-8650; spot group
decreases in size, radio int. 10 in R-8651; multiple spot groups
increase, radio int. 29 and 11 subflares in R-8659; spot decreases,
radio int. 10 and 9 subflares in R-8654; spot gone in R~8655;
small spot continues, radio int. 5 in R-8660; multiple small spots
continue, radio int. 9 in R-8663; large spot appears, radio int.

18 and 5 subflares in R-8667; spot gone, radio int. 6 in R-8661;
br. green corona NE limb; mod. green corona SE limb.

Geophysical: very slight magnetic activity to 1200 followed by
magnetically quiet.

Events: minor: Ho (R-8659) 1214 with Dkm, m, dm and cm solar burst,
SID and solar x-rays; m, dm and cm solar bursts at 1630 and 1840;
SID with solar x-rays at 2334.

24152 122 2 0 0 Solar: spot continues, radio int. 22 and 1 subflare in R-8650;

multiple spot groups continue, radio int. 28 and 6 subflares in
R-8659; spot continues, radio int. 8 and 1 subflare in R-8654;
spot gone in R-8660; single small spot continues, radio int. 8
in R-8663; spot continues, radio int. 23 in R-8667; no spot,
radio int. 6 and 2 subflares in R-8661.

Geophysical: magnetically extremely quiet, 2 Kp0o, 4 KpOr.

Events: minor: Ha (R-8659) 0609 with dm and cm solar burst and
2023 with m, dm and cm solar burst, Dkm type II and IV, SID and
solar x-rays; DSD (R-8659) 0103 with m type IL; ADF (R-8659) 0214.

25 147* 133 5 0 0 R-8659(3) Solar: spot group increases, radio int. 21 and 2 subflares in

(N18) R-8650; multiple spot groups decrease slightly in total size,
R-8669 radio int. 22 and 9 subflares in R-8659; spot decreases, radio
(02) int. 5 in R-8654; small spot continues, radio int. 8 in R-8663;

spot decreases, radio int. 22 and 5 subflares in R-8667; no
spot, radio int. 6 in R-8661; br. green corona NE and SE limbs.
Geophysical: magnetically quiet.
Events: none.

* adjusted for burst

- 80 -



Sept. 20, 196800 ur_O1

a

3 6 0 OF Oo gta

FLARES

cm,

‘drm

Bursts

< Vokse Store =

Oke

S10.

X-Rays,

Bp [Kp

ie = 3: =

aa [se

Se
5052)

}ip
J

%

190 10 en flux

6 Re

GHP Region 8981 ¥25(2)
Region 8982 N14(3)

Sepe. 21, 196700 ur Ol

a

ry 6 ci 12 5 w a

fone of five most magnetically disturbed daye--a moderately severe storm; cosmic ray decrease of about 5% during day; fonou~
phere F region very diaturbed with auroral blackout at high Latitudes; mafnly cloudy over Western Europe but excrenely vivid
furoral display seen through breaks in cloud over the Atlencie from 2210 co 0800; aurora overhead at ¢ = 56° in USSR from
1300-1400 end at d= 57° from 2000-1200 and 1500-1700, 2000-2200; aurora overhead at ¢ = 59° in North America 0000-0500;
bright green corona observed 7 days earlicr on NE lind.

os 8 6 8 7 8 8 0 fh e@ Bo

FLARES

1o/69 =

om

cay

Bursts

a |Ip

B |ta

126 10 es flux
67 Re

Sept. 22, 196700 ur Ol

4

8 CF 9 i 5 18 Ff

One of the Five moat sagnetically disturbed days-na sever
very disturbed vith auroral blackout at high latitudes;
ac f= 54° dn USSR from 1200-1300; at & = 56% 2000-2100
0500 and at ¢ = 57° 0600-1100; aurore over North Anerica

storm; commie ray intensity begins recovery; ionospheric F region
jeoral axe over Western Burope at 4 » 63° at 2230; aurora overhead

59° 1800-2100; aurora over North America at é = 58° 0000
‘0000-0500 and g = 7° 0600-1100,

3 8 SGT tte

FLARES

Esti 1/85

cm.

den

m

Bursts

km

S10

ScRoys

Ap [Kp

10 [se

|t>
0

126 10 em Flux
82 Re
GAP Region 8983 $21(2)

Region 8985 127(3)
Region 8986 534(2)

Sept. 23, 1967 Our Ol

w

w 0 ® 2 t ty a

Ionospherie F region disturbed; cosmic ray recovery continues; aurora overhead at ¥ = 58" in USSR 0000, 0200 and 1900 and at
$= 60" 1300-1400.

B 4 0 ttt tae

EA

FLARES

om

‘dm.

Bursts

m
Okm

SID,

Rays

Bp [ke

4 [se

123 10 em flux
35

Re
GHP Region 8991 S11

& 9 iJ We 5 a

One of the five magaetically quiet days; cosate ray recovery continses.

- 142 -



Anguge 24, 196700 Urol 02

%

CRC KT

2 a

FLARES

=i

Bursts

2 20

166 10 em flux

122 Re

HP Region 9943 $32
16467 N14 (B)1

w

8

%

August 25, 196700 ur 0!

FLARES

ws

im

Ean

Bursts

en
n

fo }ip

jr }io

ig

a

167 10 ex flux

130 Re,
HP 16466 123(6)4

August 26, 196700 ur 01

a

&

8

One of the five most sagnetically ataturded aa}
at 1900; aurora overhead ac d = 59° In North America 0600-1100.

8

Aonospherle F region slightly disturbed; aurora overhead at # = 61° in USSR

FLARES

3

Ey

oo

is

0

168 10 em flux

5 Re

HP Region 8942 N23(2&4)
Region 8949 S21
16668 113¢By)3
16471 520(6e)3

a

2

Avgust 27, 196709 ut, Ol

FLARES

ya
n

2.

168 10 em flux
121 Re
ON 16469 HI COEDS

135 -



Abbreviated Galendar Record

1966 10 cm Sun- Geo- CMP of Highlights
Mar. Flux spot mag. Region
S Sa No. Ap _Number

The first half of March was ionospherically quiet apart from the short disturbance on 14-15 March,
but this was followed by a period of almost continuous disturbance lasting from 19 March to
3 April. April was also remarkably quiet for an equinox month.

1 81 80 25 3 Solar: spot group over limb, radio int. 8 and 3 subflares,
bright green line corona and yellow line emission in
R-8174; spot gone in R-8177; spot growing, radio int. 9 and
bright green corona in R-8184; minor events: Ha (R-8174)
0440; br. surge (R-8174) 0458.
Geophysical: continued magnetically quiet, five Kp 0+; an
SFD at 2102.

2078 77° «ib 3 Solar: spot group persists, radio int. 7 and 1 subflare in
R-8184; 2 subflares in R-8174 over W limbs a subflare in
R-8177; minor events: Ha (R-8174) 0333 with cm. solar
burst; br. surge 174) 0345E.
Geophysical: continued magnetically quiet; SPA and S-SWF at
0313, an SPA at 1317.

3°77 7% iW Ww Solar: spot group persists, radio int. 8 and 1 subflare in
R-8184; minor events: m. solar bursts 2050 and 2140.
Geophysical: magnetically quiet except for slight-to-
moderate disturbance 0900-1500 and 2100-2400.

4 77° «76 18 9 Solar: spot, radio int. 8 and 1 subflare in R-8184; spot
appears and 1 subflare in R-8191 born on disk; minor
events: m. solar bursts 2130, 2150 and 2205.
Geophysical: slight-to-moderate magnetic disturbance 0000-
0300 and again at 2100-2400.

5 7% 75 2 5 R-8184 Solar: spot group and radio int. 7 in R-8191; spot gone in
(21) R-8184; minor event: m. solar burst 1615.
Geophysical: magnetically quiet; an S-SWF at 1602.
6 77 7% 4 R-8191 Solar: spot group persists, radio int. 8 and a subflare in
N28) R-8191; 2 subflares in R-8188; minor event: m. solar
burst 1745.
Geophysical: continued magnetically quiet.
7 #77 7 10 2 R-8188(2) Solar: spot group persists, radio int. 6 and 2 subflares in
(36) R-8191; a subflare in R-8190; subflares at N43 W14 and

S05 E03; minor event: m. solar burst 1910.
Geophysical: continued magnetically quiet; ionospheric
F region relatively quiet.

8 78 76 9 3 R-8190(2) Solar: small spot continues, radio int. 8 and 3 subflares
932) in R-8191; a subflare in R-8190.
Geophysical: continued magnetically quiet.
9 80 78 15 4 Solar: small spot persists, radio int. 11 and 2 subflares
in R-8191.
Geophysical: continued magnetically quiet with slight dis-

turbance 2100-2400; ionospheric absorption on 30 MHz at
Great Whale River begins at 1948; homogenous arc, some-
times rayed, with base overhead at ¢ = 65°, was visible
from 1940-2050, seen to $ = 59° in Western Europe. \



September 1967

40%

96S o \

97s
eas 85M agit 6S 57M
oN AZ is 63M _im sew/|
89M sm
0
ois 905

sopea\__s 87
r2'S om 798)
; oos ges
A i a a

Sept. 1, 1987 UT OL

w

Day of Central Meridian Passage

BM 8 8 ot

FLARES.

—w7a’”

82 gene

2
a r9/iz

Bursts

o|Ip

a}io

158 10 cm flux
123 Re,
OUP Region 8959

Sepe. 2, 1967 0

25

0 vr OF

2

o 6 [J a i i ny

Tonoupheric F rogion dinturbed; aurora overhead at 6 = $7* in USSR at 1400; aurora overhead at 56° in North Anerica
0600-1100.

FLARES

om

dm.

Bursts

km

S10,

XRoys

Ap [Kp

O}tp

z [se

3}t0

154 10 em flux
Us Re
GHP Region 8956

sept.

Ci)

w2303)

3.1967, 00 ur

a

8 cy 09 iz 5 e a

Tonospherte F region very dtaturbs
60% in USSR 1900-2100; aurora overhes

wuroral rayed arc overhead in Western Europe at d = 64* at 0315; aurora overhe
‘at ¢ » 59* over North Anerica 0000-0500.

FLARES.

es? 10/37. =

Bursts

Tip

Oto

165 1
119 &

0 em flux

cc)

‘One of the ten

3 @

magnetically quiet days,

a

GHP Region 8958 $27
16475 H26(BY)4
16492 520(8p)4

- 137 -



1966 10cm Sun- Geo- CMP of Highlights
Sep. Flux spot mag. Region
S 8, No. Ap Number
21 and 1353-1455; m. and dm. solar bursts 0630-0750; dark surge
(Cont ta) (R-8509) 2108; active dark filament (N25 W15) 2108 and 2247.
Geophysical: slight magnetic disturbance 0000-1600 and 1200-
1500, otherwise quiet; G-SWF, SCNA, SPA and SES at 0925;
S-SWF and SD at 2005; ionospheric absorption on 30 MHz at
Great Whale River 0202 to 2010; at 1400-1700 br. homogeneous
auroral band overhead at ¢ = 58° over U.S.S.R.
22 131132" 86 6 «= R-8512(3) Solar: 6 spot group continues, radio int. 31, 21 cm radio
(N42) noise, and 6 subflares in R-8505; Sy spot group decreases in

230 127*128* 7117

24 5 126 62 12

25 1is*119* 68 13

*® adjusted for burst

size, radio int. 23, 21 cm radio noise and 5 subflares in
R-8509; spot group increases in size, radio int. 23 and 9
subflares in R-8511; spot group increases in size, radio
int. 37, 21 cm radio noise and 9 subflares in R-8516; radio
int. 8 in R-8514; br. green corona at NE limb; moderate
green corona at NW limb; minor events: Ha (R-8516) 1213E;
type I, 21-41 Miz, 1618-1622; active dark filament (N25 W15)
0000.

Geophysical: continued magnetically quiet with very slight
activity 0000-0600 and 1800-2400; SCNA and SPA at 0821;
ionospheric F region relatively quiet; at 1400-1500 homo-
geneous auroral rays overhead at ¢ = 59°, at 1600-1700
homogeneous veil at ¢ = 58° and at 1800 br. homogeneous
are at ¢ = 59° over U.S.S.R.

Solar: spot group continues, radio int. 30, 21 em radio
noise and 1 subflare in R-8505; spot group decreases in
size, radio int. 27, 21 cm radio noise in R-8509; spot
group continues in size, radio int. 40, 21cm radio
noise and 10 subflares in R~8516; radio int. 8 in R-8514;
minor : Hy (R-8516) 1542 with cm. solar burst,
(R-8514) 2351; cm. and m. solar bursts 0955-1145 and 1225-
1310; active dark filament (R-8505) 0247.

Geophysical: slight-to-moderate magnetic activity with a
sudden commencement at 0856; SL-SWF, SPA, SES and SFD at
1550-1700; cosmic ray decrease becomes more intense with
gradual recovery until Oct. 5; at 1800-2100 short auroral
rays overhead at $ = 58°, at 1900-2000 br. striated band
at ¢= 59° and at 2100 homogeneous patch at ¢ = 60° over
U.S.S.R,

Solar: 6 spot group decreasing slowly in size, radio int.
17, 21 em radio noise and 1 subflare in R-8505; spot group
continues, radio int. 25, 21 cm radio noise and 4 subflares
in R-8509; By spot continues, radio int. 44, 21 cm radio
noise and 4 subflares in R-8516; moderate green corona at
WW limb.

Geophysical: slight magnetic activity continues; SDs at 0002E,
1730 and 1907; S-SWF and SPA at 0210; at 1300-1600 homo-
geneous auroral band overhead at ¢ = 58°, at 1900-2000 br.
medium length rayed band at ¢ = 58° and at 2000-2200 medium
length rays at ¢ = 58° over U.S,S.R.

R-8514 (2&4) Solar: 6 spot group continues, radio int. 17, 21 cm radio

N23)

noise and 2 subflares in R-8505; spot group decreases in
size, radio int. 20, 21 cm radio noise and 1 subflare in
R-8509; spot decreases in size, radio int. 40, 21 cm radio
noise and 4 subflares in R-8516; minor events: Hr (R-8516)
2350; type IV, 22-41 MHz, 1312-1340; type IL, 16-41 MHz,
1316-1335; br. surge (NO7 W limb) 1020.

-55-



Column 3 - Sunspot numbers. The provisional daily Zurich relative
sunspot number, Rz, is communicated by Prof. M. Waldmeier of the
Swiss Federal Observatory. It is based on observations at Zurich,
Arosa and Locarno only. Final values of Rz, issued after the end of
each calendar year, usually differ slightly from the provisional
values,

Column 4 ~ Geomagnetic Index, Ap. The daily planetary Ap index is
derived from the 3-hourly Kp indices, which are based on reports

from a selected standard group of geomagnetic observatories. The Ap
index increases linearly with increasing magnetic activity to a maxi-
mum of 400. The data are provided by the Permanent Service of Geomag-
netic Indices (Gottingen) of IAGA. Reference: Annals of the IGY,
Vol. IV, pp. 227-236.

Column 5 (to January 1967 when becomes column 6) - Central Meridian
Passage (CMP) of Solar Active Regions. There is an entry in this
column on the day of CMP of solar regions mentioned under "Highlights".
Listed are the serial number of the (calcium plage) region, as assigned
at McMath-Hulbert Observatory, and the nominal heliographic latitude,
Enclosed in round brackets, for example: (R-7113), are the identifi-
cation numbers of regions which were never actually at the Central Meri-
dian; these had either died while on the Eastern Hemisphere or were born
on the Western Hemisphere. Many small or ephemeral regions have been
omitted. Some of the main long-lived regions are identified by (2),
(3), ete., indicating their 2nd, 3rd, etc., passage across the solar
disk.

Column 5 (January-June 1967) - Ionospheric Indices, Ip and Ia. The
index Ip is for polar cap blackout and the index Ia is for auroral zone
blackout. The indices are on a scale from 0 = 0 to 0.4 hours of black-
out per day, increasing to 9 = 20.1 to 24 hours of blackout per day.
Tonospheric f-min data from selected stations are used. The indices
are based upon work by Y. Hakura, Y. Takenoshita and K. Matsuoka pub-
lished in J. Radio Research Laboratories (Japan), 14, No. 73, May 1967.

Colum 6 (or 7) - Highlights. These are brief comments on solar and
geophysical activity and events for each day derived from various sources
available at time of compilation. They are in abbreviated style and are
intended to be self-explanatory to anyone familiar with the concepts and
working vocabulary of this branch of science. The convention used
throughout is that 4-digit numbers signify time in hours and minutes,

and always in Universal Time (UT). Where used, the appended letter "—"
means "before", the letter "D" means "after" the time given, and the
letter "U" means "approximate" time.

Solar Highlights. The general comments refer to sunspots, radio-frequency
emitting regions, growth or decline of regions, presence of green and red
coronal line regions at limb, etc. The times given for events are nominal;
when there have been several brief events, they are not specified indivi-
dually; the period in which they occurred is given together with the number



Dec. 27, 1967 @ ur Oh 02 OFS ttt
FLARES
wR /R a 1/28
> Le im n mn i
3 [Cem mn n H
ate Ldeise storm | —————>.
kin
S10 I n i n
¥-floys i
7p [Ke 3 is " = = Ze i te 1p
9 [ose ijie
0 cy 6 ca w@ 5 8 a
183 10 ca flux Br. green corona 7 days earlier on SE Limb.
140 Re
CHP 9132 w26
9127 Nis
16626 S17 (6p)5
dec. 28, 1967 Our Ol 02 03 OST tae
FLARES
—— 10/28 oe n/32 —— n/28
> n i ar a} i
3 [cam n [
5 [om i n
© dim
310)
Rays
[Ke ie. ie i = r re = = a]te
s| "se fo}io
i) oS 06 9 a 8 0 a EA
190 10 em flux ‘Though slight activity end of day, one of five magnetically quiet days; ionospheric # region relatively quiet;
165 Be br. green corona 7 days later on SH Lind.
uP 9128 $19(485) 6618 23 (BE)?
(16625) 817 ap
(26633) $15. (ap)3
pee, 29,1967 0 ur) 02 SOS Gata
— nie
FLARES ie
19/20. tals
» sm 1 i n iam fant
3 [Cem 1 H
5 [om i n
© oxm
S10 mm
X-Rays L
7 [Ke 3p z is is r os ie 3°
ose TzTCSY [o] 10
i) & co 2 5 is a a
162 10 ca flex one of ten magnetically quiet days; cosnie ray decrease of about 3% near end of day, folloved by very gradual
Aad Re recovery until Jan. 9
cap 9129 wai
26636) 09 (op)
pec. 30, 1967 OO UT OL OF SOE Se
FLARES
> Len i i
3 [Cam 1
§ (om
© [ken
S10. i
X-Rays.
Bp [Kp ca a Ed is aa ra O|Ip
o {se E1007.) ojfo
( ae ca @ 8 i a a
164 10 co flux Jonospherte F region slightly disturbed tn sone sectors,
124 Re
cap (9143) war
9134 $27
bec. 31, 1967 00 urd) 02 3S Hw tae
FLARES
= la/2s 1/33
= [em i
& [cam i
5 [om
© [xr
S10. n i
X-Rays i
7p [Ke En = ie ms és. cy Bip
9 st | fo
sy 6 [ i 5 18 Fd
158 10 eo flux one of most disturbed days in year; one of five most magnetically disturbed days; aurora overhead over
19 ke N, America at ¢ = 58° 1200-1700; auroral 1ight visible through clouds over W. Europe at ¢ = 59° 0145-0610,
GHP 9132 $13(2) 16629 513 (ap)é rayed are of band, sosctires homogeneous, sonctines multiple und striated, overhead at $ = 63-65° 1700-0160
9133 827 and later overhead only north of @ = 64°, visible occasionally to @ = 35°; aurora overkead over USSR at

16628 S16 (Bp)4

$ = 57° 0900-1000 and 1800-2000, and at $ = $5* 1109-1700 and 2000-2100; ionospheric F region very disturbed
with auroral blackout. 163



1966 10 cm Sun- Geo-
Dec. Flux spot mag.

SS, No. Ap

CMP of
Region
Number

Highlights

18 115 111 76 5

19 116 112 57 3

20 111 108 46 7

21 110106 437 12

22 109%106* 34 14

* adjusted for burst

R-8619
(806)

Solar: spot group continues, radio int. 12, 21 cm radio noise and
5 subflares in R-8610; spot group continues, radio int. 20, 21 cm
radio noise and 2 subflares in R-8612; spot group continues in
R-8613; spot group appears in R-8615; small spot group continues
in R-8616; br. green corona on NW limb, moderate green corona on
NE limb; minor events: Ha (R-8612) 1820 with cm. solar burst.

Geophysical: magnetically quiet; SID at 1422; ionospheric F region
relatively quiet. .

Solar: spot group continues, radio int. 17, 21 cm radio noise and
4 subflares in R-8610 at W limb; spot group continues, radio int.
17, 21 cm radio noise and 2 subflares in R-8612; spot group dis-
appears in R-8613; 5 subflares in R-8615; 2 subflares in R-8616;
spot group, radio int. 6 and 4 subflares in R-8620; moderate green
corona on NW limb, moderate green corona on NE limb; minor events:
Ha (R-8613) 1419E with cm. solar burst; cm. solar bursts 1510-
1620.

Geophysical: continued magnetically quiet, 1 KpOt, 1 Kp0o; iono-
spheric F region relatively quiet.

Solar: spot group continues, radio int. 12, 21 cm radio noise and
3 subflares in R-8612; 3 subflares in R-8615; spot group continues
with radio int. 6 and 2 subflares in R-8620; radio int. 7 and 4
subflares in R-8621 at E limb; br. green corona on NE limb, br.
green corona on NW limb; minor event: active prominence region
(R-8621) 1208.

Geophysical: magnetically extremely quiet, 3 KpOt, 1 Kp0o, until
1200, slight activity thereafter; 30 MHz ionospheric absorption
at Great Whale River 1526 to Dec. 23 at 0428.

Solar: spot group continues, no data at 9.1 cm, 21 em radio noise
in R-8612; 1 subflare in R-8615; spot group continues and 1 sub-
flare in R-8620; small spot group and 2 subflares in R-8621; 21 cm
radio noise and 1 subflare in R-8625 at E limb; small spot in
R-8619; minor events: cm., m. and dm. solar bursts 1040 and cm.
and m. solar bursts 1450; type IL, 28-41 MHz 1506-1510; eruptive
prominence (R-8625) 1103; br. surge (R-8625) 1940.

Geophysical: slight magnetic activity until 1200, quiet 1200-1500,
then slight activity thereafter; SID at 0450, 1450, and 1910;
homogeneous auroral arc of medium brightness overhead at $ = 57°
over U.S.S.R. 1600-1700 and 2000.

Solar: spots gone over W limb but radio int. 9 in R-8612; small
spot group continues, radio int. 6 and 2 subflares in R-8620;
small spot group and 1 subflare in R-8621; spot group, radio int.
23, 21 cm radio noise and 1 subflare in R-8624 at E limb; spot
group, radio int. 10, 21 cm radio noise and 7 subflares in R-8625;
spot gone in R-8619; moderate green corona on NW limb, br. green
corona on NE Limb; minor events: Hy (R-8625) 0848E, 1000E, 1025
with dm, solar burst and 1126 with cm. and m. solar burst with
active prominence region; br. surge and eruptive prominence;
active prominence region (R-8625) 0535.

Geophysical: slight magnetic activity until 1200 with preliminary
sudden commencement at 0441, slight-to-moderate activity there-
after; SID at 0110 and 2229.



1966 10 cm Sun- Geo- CMP of Highlights
May Flux spot mag. Region
S_ Sa No. Ap Number

13° 91 93 23 7 Solar: no spot mag. obs. Mt. Wilson; radio int. 14, 21 om
radio noise and 1 subflare in R-8294; small spot, radio
int. 16 and 3 subflares in R-8300; small spot appears and
4 subflares in R-8298; small short-lived spot in R-8301;
1 subflare in R-8296; radio int. 9 in R-8302 at E limb;
minor event: eruptive prominence (R-8290) 1910.

Geophysical: magnetically quiet except slight disturbance

0000-0300 and 1500-1800.

14 95 97 52 2 Solar: radio int. 13, 21 em radio noise and 1 subflare in
R-8294; small spot continues and radio int. 12 in R-8300;
small spot continues in R~8298; spot appears, radio int.
15 and 4 subflares in R-8296; radio int. 10 in R-8302;
minor event: HY (R-8296) 0630E with cm. solar burst.

Geophysical: magnetically very quiet, 5 Kp 0o or 0+;

donospheric F region relatively quiet.
15 97 99 46 2 —-R+8294(4) Solar: radio int. 9, 21 cm radio noise and 1 subflare in
22) R-8294; small spot continues and radio int. 8 in R-8300;

small spot disappears in R-8298; spot continues, radio
int. 14, 21 em radio noise and 12 aubflares in R-8296;
radio int. 10 in R-8302; 1 subflare in R-8299; radio
int. 6 and 1 subflare in R-8303; minor events:
Hy (R-8296) 0755E with cm. and m. soler bursts; active
dark filament (R-8294) 1220.

Geophysical: continued magnetically very quiet 5 Kp 0o or
O+; ionospheric F region relatively quiet.

16 98 100 47 5 Solar: radio int. 9 and 1 subflare in R-8294; small spot
and radio int. 8 in R-8300; spot continues, radio int. 22,
21 cm radio noise and 7 subflares in R~8296; radio int. 12
and 1 subflare in R-8302; radio int. 7 and 3 subflares in
R-8303; 1 subflare in R-8301; minor events: Hx (R-8296)
0704B, (R-8303) 0724E; m. solar noise storm; cm. solar
burst 2040; br. surge (R-8296) 1500U.

Geophysical: continued magnetically quiet especially 0600-

1200 Kp0+; S-SWF at 2029, G-SWF and SPA at 2040.

17 97: 99-33 7 R~8299 Solar: no spot mag. obs. Mt. Wilson; radio int. 10 in
(827) R-8294; small spot disappears in R-8300; spot continues,
radio int. 17, 21 em radio noise and 11 subflares in
R-8296; spot appears, radio int. 13 and 21 em radio noise |
in R-8302; radio int. 10 and 1 subflare in R~8301.
Geophysical: magnetically quiet except slight diaturbance
0000-0300; SEA at 1735.

18 96 99 27 5 Solar! no spot mag. obs. Mt. Wilson; radio int. 10 and
2 subflares in R-8294; spot decreasing, radio int. 16 and
3 subflares in R-8296; spot continues, radio int. 16,
21 cm radio noise and 3 subflares in R-8302; radio int. 8
and 1 subflare in R-8301; moderate green corona on
NE limb; minor event: Hy (R-8296) 1108.

Geophysical: continued magnetically quiet except slight

disturbance 0000-0300.

-27-



1966
Dec.

10 cm Sun- Geo-
Flux spot mag.
SS, No. AP

CUP of
Region
Number

Highlights

10 162*157* 112 4

Ll 168*163% 125 3

12 163 158 130 2

13° 160 156 118 20

* adjusted for burst

R-8606 (4)
(N06)

R-8607 (5)
N22)

R-8609
(823)

R-8610
@21)

Solar: spot group continues with radio int. 13 in R-8606; spot
group classed By, radio int. 24, 21 cm radio noise and 8 sub-
flares in R-8607; spot group still growing now By, radio int.
43, 21 em radio noise and 19 subflares in R-8609; spot group
now By, radio int. 30, 21 cm radio noise and 15 subflares in
R-8610; spot group with radio int. 15 and 8 subflares in R-8612;
major events: Ha (R-8610) impt. 2n 1427-1546 with cm. solar
burst, (R-8612) impt. 2n 2305-2335 with cm. solar burst and m.
noise storm and eruptive prominence, active prominence region
(R-8612) 2350-0404; minor events: Ha (R-8610) 1213 with cm. and
m. solar burst, (R-8609) 1737 with m. solar burst; m. noise
storm 2300 (Dec. 9)- 0500; type IZ, <100-150 MHz 2329-2337.

Geophysical: continued magnetically quiet, 2 Kp0o; SID at 1223,
1436, 1735 and 2320; ionospheric F region relatively quiet.

Solar: spot group continues with radio int. 12 and 2 subflares in
R-8606; spot groups continue, radio int. 20, 21 cm radio noise
and 2 subflares in R-8607; large By spot group continues, radio
int. 52, 21 cm radio noise and 9 subflares in R-8609; spot group
continues, radio int. 26, 21 cm radio noise and 13 subflares in
R-8610; spot group continues, radio int. 24, 21 cm radio noise
and 4 subflares in R-8612; minor events: Ha (R-8612) 0021 with
m. noise storm, (R-8610) 1423 with dark surge, (R-8609) 1910
with cm. solar burst and dark surge, and 2340 with m. noise
storm; m. noise storm 2300 (Dec. 10)- 0500; cm., m. and dm.
solar bursts 0800-1330; br. surge (R-8612) 0026; active pro-
minence region (R-8612) 0342-0535.

Geophysical: magnetically extremely quiet, 3 KpOt, 1 Kp0o; SID
at 0530, 1914 and 2352; ionospheric F region relatively quiet.

Solar; spot group continues with radio int. 11 in R-8606; spot
groups continue, radio int. 14, 21 em radio noise and 1 sub-
flare in R-8607; large spot group continues growing, radio int.
53, 21 cm radio noise and 9 subflares in R-8609; spot group
again By, radio int. 23, 21 cm radio noise and 8 subflares in
R-8610; second spot group appears, radio int. 25, 21 cm radio
noise and 2 subflares in R-8612; minor events: HO (R-8610)
1242E, (R-8609) 1920, both with m. solar burst; m. noise storm
2300 (Dec. 11)- 0500; cm. and m. solar bursts 0800-1420.

Geophysical; continued magnetically extremely quiet, 6 KpOt,

1 Kp0o; SID at 2239.

Solar: spot group continues with radio int. 12 and 2 subflares
in R-8606; spot groups continue, radio int. 13, 21 om radio
noise and 4 subflares in R-8607; spot group continues, radio
int. 41, 21 cm radio noise and 16 subflares in R-8609; spot
group continues, radio int. 24, 21 cm radio noise and 2 sub-
flares in R-8610; spot groups continue, radio int. 31, 21 cm
radio noise and 4 subflares in R-8612; major events: Ha
(R-8612) impt. 2b 2302-2354 with cm. solar bursts; minor events:
m. noise storm 2300 (Dec. 12)- 0500 and 0710-1500; cm. and m
solar bursts 0940-1500 and 1730 and 1830-1910.

Geophysical: moderate magnetic activity until 1800, very slight
activity thereafter; SID at 0112, 0653, 1727, 1921 and 2305;
cosmic ray decrease begins early, then erratic recovery until
Dec. 17; medium auroral rays of medium-to-intense brightness
overhead at ¢ = 58° over U.S,S.R. 1300-1400, medium bright
homogeneous band at ¢ = $7° 1500-1600, medium bright homo-
geneous arc at ¢ = 58° 1700, medium-to-bright striated band
at ¢ = 57° 1800; ionospheric F region slightly disturbed.

- 70 -



oc. 5, 1967 Ur) HEB gk
FLARES = 10/08 — 10/08
> Lee
3 [Cam
§ im
& [0mm -
S10
¥Roys = " Te lo ]1p
Bp [Ke = ab 2 % Jo
a1 @ 6 cA 2 5 8 a
126 10 ca flux Br. greon corona 7 daye earlier on NE Lieb.
103 Re
GH 9005 w25(2) (26526) w23 (BE)
(Gort) LL 16520. m4 (ap)
(16522) 112 p)3
oct. 6, 1967 Our 0 BHT Stee
FLARES
m0 inf 04
2 ni
% [cam
§ om A
2 Fox
S10
Rays
= 2. qe oF = ni
Bp [Ko 30 4s 2 a}to
6 [ose
1) 8 08 a 2 8 6 a 4
130 10 ca flux Asrora overhead in USSR at 4 59° 1300-14003 br. green corona 7 days earlier on NE 2xb,
98 Re
om 9011 m3
9006 S17 16515 S18 (ap)3
(9026) H18
16521123 af
oct. 7, 1967 Mur 0 OSH tm
FLARES
33/08 1e/06 — 1/00 ib/o4
~ [sn 2
3 [lam n
3 [om rarer A
© [bx .
S10 i i
R
as = res = 7 ns 2 i rt Io]t9
7 [ose A 07196), lo}to
i iy @ 5 18 a
126 10 ca flux Br. green corona 7 days earlier on SE Lind.
te
owe 9012 830¢4)
Oct, 8, 1967 OO ur Ol O2 03k OS Oho tk
FLARES
—— 29/04 —— 3¢/0%
> Le 1
& [am
© [bk
S10. 7
X-Rays
Ap [kp 20. ‘OF Je At 3: er = ‘a]ip
a [se A os0acs) Bioisah 11400) jaJto
00 (a 6 ie 5 i a
122 10 en flux Aurora overhead in USSR at $ = 59° 1300 and at 6 = 57% 1400-1800; weak rayed are visible from 2050-0130 over
76 Re W. Europe to @ = 59°.
Hr $013 M2 26519 NLL (6p)2
5007 n29(3)
5014 $22(2) 26517 $26 (aps
oct. 9, 1967 OUT Oo OS ose eet
FLARES
> Le
¢|-a ni
§ [om
2 [ok
S10.
X-Rays
Ap [_Ke 36. 2 z= Je i a a = Sie
as [sc £is032) 3}l0
i) 8 6 cr) ie 15 18 a

322 10 em flux

80 Re
HP 9025 m4(3) 16523 me (BEDS

‘Though twelve hours of quiet one of five most aagnetically disturbed day:

W. Atlaneie to ¢ = 59° 0200-0345; rayed are with base overhead at $
during all dark hours of night of October 9-10 over i, Europe and fi

65° and also honog
Atlantic to 9 = 57

weak rayed are visible over

ous arc visible
aurora overhead

in USSR ar @ = 59° at 1400, at = 60° 1500-2000 and 2300, at ¢ = 56° 2100-2200; Lonospheric F region

adeturbe

146



Highlights

100 98 20

Solar: spot continues, radio int. 7 and 3 subflares in R-8566;
spot continues, radio int. 7, and 2 subflares in R-8567; spot
continues, radio int. 9 and 5 subflares in R-8560; spot continues,
radio int. 14, 21 cm radio noise and 1 subflare in R-8571; radio
int. 6 in R-8568; radio int. 6 in R-8563; minor events: Ha
(R-8567) 1053E; active dark filaments (N23 E58) 0855E and
(R-8567) 2313.

Geophysical: moderate magnetic activity continues, 3 Kp5-, 1 Kp5,
until 1800, slight activity thereafter; short auroral rays over-
head at ¢ = 58° over U.S.S.R, 1500-2000, medium brightness short
rayed band at ¢ = 57° 1500 and 1700, short rayed arc at ¢ = 54°
1800; ionospheric F region very disturbed with considerable
auroral blackout at high latitudes.

Solar: spot continues, radio int. 8 and 6 subflares in R-8566;
spot continues, radio int. 9 and 2 subflares in R-8567; spot
continues, radio int. 6 and 1 subflare in R-8560; spot continues,
radio int. 14 and 21 cm radio noise in R-8571; radio int. 5 and
2 subflares in R-8568; minor events: Ha (R-8566) 0950, (R-8568)
1004, (R-8567) 1014; cm. and m. solar burst 1720-1820; active
dark filament (R-8568) 1940-0500.

Geophysical: slight magnetic activity; SID at 1726; 30 MHz iono-
spheric absorption at Great Whale River recovers 0840, then
occurs again 1150-2150; medium brightness homogeneous auroral
band overhead at $ = 57° over U.S.S.R. 2000.

Solar: spot gone, 3 subflares in R-8566; spot continues, radio
int. 8 and 5 subflares in R-8567; spot continues, radio int. 8
and 2 subf£lares in R-8560; spot continues, radio int. 13, 21 cm
radio noise and 1 subflare in R-8571; radio int. 6 and 4 sub~
flares in R-8568; minor events: cm. and m. solar burst 1905;
active dark filament (R-8568) 0534-0715 and 1955-0130; active
filament region (R-8567) 0549-0800D.

Geophysical: slight-to-moderate magnetic activity; SID at 0655;
30 MHz ionospheric absorption at Great Whale River 0035 to
Nov. 4 at 0904; homogeneous auroral arc overhead at $= 59°
over U.S.S.R. 1300-1400; ionospheric F region slightly dis-
turbed on some sectors, some auroral blackout at high latitudes.

Solar: R-8566 over W limb; spot gone, radio int. 6 in R-8567;
spot gone, 1 subflare in R-8560; spot continues, radio int. 11,
21 cm radio noise and 1 subflare in R-8571; spot appears, radio
int. 6 and 21 cm radio noise in R-8563; 1 subflare in R-8568;
minor events: Hx (R-8567) 1306; active dark filament (R-8568)
1955-0227.

Geophysical: slight magnetic activity until 0600, very slight
activity thereafter.

Solar: radio int. 6 and 21 cm radio noise in R-8567; R-8560 over
W limb; spot continues, radio int. 11 and 21 cm radio noise in
R-8571; spot continues, radio int. 7 and 21 cm radio noise in
R-8563; spot group appears, radio int. 9 and 4 subflares in
R-8572; radio int. 9 in R-8568; moderate green corona NW limb;
minor events: Ha (R-8568) 0425 with cm. solar burst and sudden
disappearance of filament; Ho (R-8573) 1232 with em. and m.
solar bursts and br. surge; cm. and m. solar bursts 0910; br.
surge (R-8573) 0833E; sudden disappearance of filament (R-8568)
1530; active dark filament (R-8572) 2108; eruptive prominence
(N58 E limb) 2230.

Geophysical: continued very slight magnetic activity; SID at 2134,

- 63 -



1966 10 cm
Apr. Flux
S $a

Sun- Geo- CMP of
spot mag. Region

No. Ap Number

Highlights

2
(Cont 'd)

3 102 102

4 102 103

5 102 102

6 104 104

7 103 103

1% 7 R-8223 (2)
(x27)

74 8

55 6 (R-8252)
(N01)

59 7 R-8240
(N20)

70 10

1500; S-SWF and SEA at 1702; SFD at 1851; SL-SWF, SPA and
SED at 2108; SL-SWF, SPA and SFD at 2214; ionospheric
F region very disturbed.

Solar: spot group again By, radio int. 63, 21 cm radio noise
and 15 subflares in R-8223; spot gone in R-8242; small
spot in R-8238; small spot, radio int. 8 and one subflare
in R-8240; minor events: Ho (R-8223) 0736E and 1301;
active dark filament (R-8223) 1302; em. solar bursts 0440,
1100, 1305, 2155, and 2230; m, solar noise storm.

Geophysical: continued magnetically quiet except for slight
disturbance 0300-0600 and 2100-2400; G-SWF and SPA at
0439; S-SWF and SEA at 1305; SFD's at 1618D and 2156D; SPA
at 2048; S-SWF, SPA and SFD at 2225.

Solar: spot group By with delta characteristics, radio
int. 65, 21 cm radio noise, and 11 subflares in R-8223;
small spot continues in R-8238; small spot in R-8243;
small spot and radio int. 9 in R-8240; major events: Ha
(R-8223) impt. 2b, 2107-2244; active dark filament
(R-8223) 2111-2202; minor events: Ha (R-8223) 0141, 0407,
0641, and 0733E; cm. solar bursts 0140, 0430, 0450, 0640,
0740, and 1830; m. solar noise storm; active dark filament
(R-8223) 0008.

Geophysical: magnetically quiet except for slight distur-
bance 0000-0600; S-SWF and SPA at 0144; G-SWF and SCNA at
0408; G-SWF at 0430; S-SWF, SEA, SPA, and SES at 0733;
S-SWF, SEA and SPA at 1228; SFD's at 1341 and 1554;
SL-SWF, SCNA, SPA, and SED at 2112.

Solar: spot group still By, radio int. 53, 21 cm radio
noise, and 10 subflares in R-8223; small spot continues in
R-8238; small spot, radio int. 10 and 2 subflares in
R-8240; small spot in R-8248; moderate green corona, redio
int. 9 in R-8254; minor events: dark surge disk (R-8223)
1946-2021; cm. solar bursts 0105 and 0205; m. solar noise
storm.

Geophysical: continued magnetically quiet; S-SWF, SEA, SPA,
and SED at 0205.

Solar: spot decreasing but still By, radio int. 43, 21 em
radio noise, and 7 subflares in R-8223; small spot con-
tinues and 4 subflares in R-8238; small spot, radio
int. 16 and 2 subflares in R-8240; small spot and 1 sub-
flare in R-8248; radio int. 10 and 1 subflare in R-8251;
minor events: Ha (R-8223) 1558 and 2320; cm. solar bursts
1210, 1600, 2110, and 2325; m. solar noise storm.

Geophysical: continued magnetically quiet; SFD at 1559;
SPA's at 2135 and 2321.

Solar: spot still decreasing no longer BY, radio int. 32,
21 cm radio noise, and 8 subflares in R-8223; small spot
continues and 4 subflares in R-8238; spot growing, radio
int. 30 and 12 subflares in R-8240; small spot and 6 sub-
flares in R-8248; radio int. 10 in R-8254; radio int. 7
in R-8252; minor events: dark surge (R-8248) 1302-1332;
cm. solar burst 1235; m. solar noise storm.

Geophysical: magnetic disturbance 0000-0600 KpS-3+ but
quiet thereafter; S-SWF, SGNA, SPA and SES at 1642;
jonospheric absorption at Great Whale River beginning
1904.

- 20 -



Abbreviated Calendar Record

1966 10cm Sun- Geo- CMP of Highlights
July Flux spot mag. Region
SS, No. Ap Number

The recurrence sequence starting 2 April lasted until September. It consisted of a number of dis~
crete disturbances which only repeated two or three times. August was relatively disturbed. A
widespread disturbance started about 30 August and extended to 10 September.

1 97100 49 5 R-8361(2) Solar: radio int. 7 and 1 subflare in R-8348 at W limb; spot
(N33) group $y, radio int. 13 and 1 subflare in R-8358; spot con~
tinues, radio int. 10, 21 cm radio noise and 2 subflares in
R-8361; spot gone in R-8359; spot appears in R-8362; radio
int. 7 in R-8351; spot appears, radio int. 12 and 6 sub~
flares in R-8370; radio int. 13 and bright green corona in
R-8379 at E limb; minor events: Hy(R-8351) 0605E and 0951
with eruptive prominence; br. surge (R-8351) 0927.
Geophysical: continued magnetically quiet.

2 95 98 49 4 Solar: spot size and radio int. decreasing, 1 subflare in
R-8358; spot continues, radio int. 11 and 1 subflare in
R-8361; spot growing and radio int. 11 in R-8362; moderate
green corona in R-8351 at W limb; spot growing, radio int.

15 and 5 subflares in R-8370; radio int. 12 and bright
Breen corona in R-8379; minor events: Hy (R-8362) 0503E with
cm.solar burst, (R-8370) 0519; active prominence region
(R-8351) 0730; active dark filament (R-8358) 2126.
Geophysical: continued magnetically quiet with 3 Kp 0+; ionos-
pheric F region relatively quiet; moderate display noctilu-
cent clouds visible from 2130-0135 between geographic lati-~
tudes 57° and 60° in Western Europe.

3 96 99 54 4 R~8362 Solar: spot again classed Sy, radio int. 20, 21 cm radio noise
N35) and 3 ‘subflares in R-8358; spot disappears, radio int. 8 and
1 subflare in R-8361; spot Sy and size increasing, radio int.

22, 21 cm radio noise and 6 subflares in R-8362; spot con-
tinues with 2 subflares in R-8370; small spot appears, radio
int. 11 and 1, subflare in R-8379; minor events: Hy (R-8361)

0713 with cm. burst; cm. and m.burst 0810; active dark fila-

ment (R-8358) 0000, 0237, 0451 and 2237.

Geophysical: continued magnetically quiet; weak display nocti-

lucent clouds visible through cloud in Denmark, 2200-0001.

4 101105 53 14 Solar: spot continues, radio int. 23, 21 cm radio noise and 2
subflares in R-8358; 8y spot growing, radio int. 47, 21 cm
radio noise and 10 subflares in R-8362; spot continues in
R-8370; radio int. 9, 21 cm radio noise and 1 subflare in
R-8379; minor events: Hy (R-8362) 0900.

Geophysical: continued magnetically quiet becoming slight-to~
moderately disturbed 1200-2400; faint display noctiluceat
clouds seen 2330-2340 in Western Europe.

5 102 105 48 5 R-8373(3) Solar: spot continues, radio int. 19, 21 cm radio noise and 2
(N24) subflares in R-8358; 8y spot continues to grow, radio int.
57, 21 cm radio noise and 16 subflares in R-8362; spot seen
again with radio int. 11 in R-8379.
Geophysical: very slight magnetic activity, SL-SWF and SPA at
1843; SL-SWF, SCNA, SPA, SES and SFD at 2012; SPA at 2230.

-~37 -



Nov. 28, 1967 00 ur Of 02034

5 ee tw
FLARES
2 Le n mi
% [Cam n
§ Cm polse store n
2 [ok
SID, i
X-Rays
ap [Ke es Te a zy = 3E = te alte
a7 [se 5|I0
00 8 ny 09 iz 5 18 Fi a
262 10 c= flue Avrora overtiead over USSR at @ # 57° 1700-2200 and at 4 = 61° 2200-2300; honagencous arc, occasionally rayed,
2 Re base overhead at ¢  66-67° 1750-2405 over W. Europe to ¢ = 58°; Lonozpherie F region very disturbed with
GHP 9088 sie 16573 S10 (p)5 sone auroral blackout.
(9104) a9
Nov. 29, 1967 0 ur Ol O2 03 os oS Soe lt
FLARES
— 10/93 10/92
2 1 n
3 (Cae 1 :
§ (om
2 [0K
S10 n i i i
X-Rays L i
7 [Ke a EG D = Ay if = Ble
1 SC. 4051243) Or
i & 06 8 ig 5 8 a
154 10 om flux furora overhead over USSR at 9 = 57* 1500-2100, at $ = 60° 1300 and at } = 61° 1000-1200 and 1300-1400;
17 Re Sonospherte F region very disturbed; br. green’ corona on SE lich observed 7 days cariter.
‘cur 9089 817 (243) 16575 M12 op
9090 S24 (2) (16574) 827 ap
Nov. 30, 1967 OO yr Ol 02 OF O05 OS gts kk kl
FLARES
—— wy
> Le i i i n n I
& [Cae
§ Cm
© [ok n
SID, i i
X-Rays i i
Bp |_Ke rs rr Ze a = % rm ‘ug a
13 [se aye
0 8 6 09 a 15 18 a ae
149 10 em flue Avrora overhead over USSR at @ = 57° 1300-2200; honogeneous arc becoming rayed, visible all night ov. 30-
123 Re Dec. 1 over W. Europe to ¢ = SA°; aurora co = Si* over N. Anorien 0000-0500; tonospheric F region very
CHP $092 19°) atsturbed.
DECEMBER i967
Lo 225° 270° ist o 45 90° 135% 160* 225° “wn
ied a3
95s
128 00g
298. ais ‘em \ 13s QO. {IX fy oo
20° TS ES p35 ‘yrs oiMt ‘985
186 Lag uM 55
s 30S \
3
= \ oe
3
21
Shem ws L 99
fs w osm 7
20". } OM, 24s. S. OM. 03S ." 20°
34 945
[33M 20M el )
$40 40S
A ra a a a 2 |
Doy of Central Mer
Dec, 1, 1967 0 urdl oe Ok Sw is tif ee
FLARES
4n/9 mo tn/91__ m= 18/92 ——in/91
~ Lom i i n it m i i L
3 [Cem L n i
5 [om
© | Oem 1
‘STO, n i a 1 | i 1
X-Rays 1 1 im
®p [Ke Ea = i sy cc 3 lo]te
a3 [Tse sti
8 & a) re 5 8 a

146 10 em Flux
3

ue (9100) w26 (16586) 823 Cap)?
16577827 (ap)2
(16588) 27 (Bp)2

One of five most magnetically disturbed days; rayed auroral arc, sonotines homogeneous, overhead over W. Europe
at ¢ 64-66" and visible co ¢ = 56° 1745-0600; aurora overhead over USSR at ¢ = $4" 1600-1800 and 2000-2100, at
= 50° 2200; ionospheric F region disturbed with auroral blackout.

157



1966 10 cm Sun- Geo-
Oct. Flux spot mag.
S___Sa___No. Ap

CUP of
Region
Number

Highlights

1 101 101 57 6

2 102102 55 3

3 103 103 50 4

4 101*101* 36 26

5 100100 40 36

* adjusted for burst

R-8529
(9/30/66)
(S20)

R-8528
(S21)

Solar: spot continues, radio int. 10 in R-8522; spot appears,
radio int. 9 and 15 subflares in R-8529; 3y spot group con-
tinues, radio int. 30, 21 cm radio noise and 3 subflares in
R-8516; moderate green corona NE limb; major events: HY
(R-8516) impt. 2n, 0213-0325 with cm. solar burst and active
dark filament; minor events: ly (R-8516) 1641 with sudden
disappearance of filament, (R-8529) 1736.

Geophysical: very slight magnetic activity; SID at 0226, 1625,
1729, 2030 and 2044.

Solar: spot continues, radio int. 12 and 2 subflares in
R-8522; epot continues, radio int. 6 and 4 subflares in
R-8529; spot gone, radio int. 18, 21 cm radio noise and 1
subflare in R-8516; br. green corona NE limb; minor events:
Ha (R-8516) 0900E.

Geophysical: magnetically quiet, 1 Kp0, 2 Kp0+; ionospheric
F region relatively quiet.

Solar: spot continues, radio int, 11, 21 cm radio noise and
2 subflares in R-8522; spot continues, 21 cm radio noise in
R-8529; no spot, radio int. 12, 21 cm radio noise in R-8516;
spot appears, radio int. 28, 21 cm radio noise and 1 sub-
flare in R-8530; br. green corona NE limb; minor events:

He (R-8522) 0828; active prominence region (R-8516) 1011.

Geophysical: continued magnetically quiet; ionospheric F
region relatively quiet.

Solar: spot decreases in size, radio int. 8 in R-8529}
R-8516 goes off W limb; spot continues, radio int. 28, 21 cm
radio noise and 3 subflares in R-8530; minor events: HW
(R-8530) 1050 with cm. and m. solar bursts; br. surge (R-8516)
0010; dark surge (R-8530) 1112.

Geophysical: very slight magnetic activity until 1200, moder-
ate activity until 2100, moderately severe storm 2100-0000,
1 Kp6; SID at 2205; ionospheric absorption at 30 MHz at
Great Whale River from 0250 until Oct 6 at 2240; aurora at
é = 57° over North America 0000-0500, homogeneous arc over~
head in 6 = 64-65° during the whole night over Western Eur-
ope with pulsating occurring around 2035 UT and separate
ray bundles reaching overhead intermittently in ¢ = 63°
visible to § = 55°; ionospheric F region slightly disturbed
in some sections, beginning of severe disturbance.

Solar: spot continues to decrease, radio int. 8 in R-8529;
spot continues, radio int. 27, 21 cm radio noise and 3 sub-
flares in R-8530; small second spot appears in R~8530; minor
events: active prominence region (N57 W90) 0853; active
dark filament (N63 W70) 1015.

Geophysical: moderate magnetic storm, 2 Kp5, 1 Kp5+, 2Kp5-,
slight activity after 2100; SID at 0215; cosmic ray decrease
recovery; aurora at § = 60° over North America 0000-1100, me-
dium length rays of medium-to-intense brightness at ¢ = 59°
over U.S.S.R. 1600-1700; ionospheric F region very disturbed
with considerable auroral blackout at high latitudes.



1966 10 cm  Sun- Geo- CMP of
Apr. Flux spot mag. Region
S_ Sa __No. Ap __Number

Highlights

21 91 92 40 5

22 92 «93 56 B

23° «98 «99 69 10

24 3102 104 58 6 = R-8272
x19)

25 103 104 56 3

26 100 101 954 3 R-8273
@25)

Solar: small spot continues, radio int, 28, 21 cm radio
noise, and 7 subflares in R-8262; small spot continues,
radio int. 10, 21 em radio noise, and 7 subflares in
R-8272; small spot continues in R-8273; minor events: Ha
(R-8262) 0911; cm. solar bursts 1945 and 2015

Geophysical: continued magnetically quiet.

Solar: spot smaller, radio int. 20 and 21 em radio noise
in R-8262; small spot, radio int. 18, 21 cm radio noise,
and 12 subflares in R-8272; small spot and 1 subflare in
R-8273; 1 subflare in R-8274; 3 subflares in R-8275.

Geophysical: slight magnetic disturbance; S-SWF at 0600;
fonospheric F region slightly disturbed.

Solar: spot still smaller, radio int. 18 and 21 cm radio
noise in R-8262; spot growing, radio int. 26, 21 cm radio
noise, and 2 subflares in R-8272; small spot in R-8273;
small spot and 7 subflares in R-8275; 1 subflere in R-8277;
radio int. 11 in R-8278.

Geophysical: slight-to-moderate magnetic disturbance con-
tinues to 0900, quiet thereafter; G-SWF at 0441;
ionospheric absorption at Great Whale River from 0319 to
1042 on 30 Mz.

Solar: spot almost gone, radio int. 17, 21 cm radio noise,
and 3 subflares in R-8262; spot growing, radio int. 35,
21 om radio noise, and 1 subflare in R-8272; spot and
radio int. 8 in R-8273; spot and 1] subflares in R-8275;
small spot, bright green corona, radio int. 14, and 1 sub-
flare in R-8278; 1 subflere in R-8279; minor events: Ha
(R-8275) 1409, (R-8272) 2122E; dark surge (R-8273) 0815E;
active dark filament (R-8273) 2128, 2248 and 2306; cm.
solar bursts 1400 and 1410; m. solar noise storm.

Geophysical: continued magnetically quiet except slight
disturbance 1800-2100; SL-SWF, SPA, SES, and SFD at 1410;
SED at 1853; SPA at 2130.

Solar: radio int. 17 and 21 om radio noise in R-8262; spot
stable, radio int. 31, 21 cm radio noise, and 6 subflares
in R-8272; small spot and radio int. 6 in R-8273; spot
and 4 subflares in R-8275; tiny spot, bright green corona
and radio int. 14 in R-8279; minor events: Ha (R-8272)
1523, (R-8279) 1600; active dark filament (R-8273) 0010,
0115 and 0239; cm. solar bursts 0430 and 2310; m. solar
noise storm.

Geophysical: continued magnetically very quiet; G-SWF and
SPA at 0435.

Solar: radio int. 15 and 21 cm radio noise in R-8262; spot
stable, radio int. 26, 21 cm radio noise, and 4 subflares
in R-8272; small spot, radio int. 7 and 21 om radio
noise in R-8273; small spot and 9 subflares in R-8275;
radio int. 17, 21 cm radio noise and 2 subflares in
R-8279; minor events: Ha (R-8278) 1830; active dark
filament (R-8273) 2243-2400; cm. solar burst 0510.

Geophysical: continued magnetically very quiet; ionospheric
F region relatively quiet.

- 23 -



Sepe. 28, 196700 url 0203 O05 obo oot
FLARES
= w/o: =w/ss_ —— 39/99
> Le n i
% [Com L1
i [f= n i
Dim i
S10, I
Rays
‘Bp |_Kp Es $e Ess a rs a altp
36 [se O536G) A KOSSICY 3}0
Cy 9 @ 5 8 i] 4
136 20 on ete
oe, of aha Cave sous magacticelly dtncerbd dayaeva noerate ators iooupherie ¥ repion dscurted; bright auroral raed bend,
Oi esion 9600 533(3) conetings scconpaned also by rayed arc, visible sunset :o sunrise over Mestern Europe and the Atlantic to ¢ = 36%;
overhead at d = 56* tn USSR at 1800 and 2200-2300, at é = 57° 1100-1300, 1300 and 1700-1900, stg ~ 58" 2000-2200 ond at f=
33°"1800-1900; nuroce' overheed at © 36° in Herth fnerice 0600-1100.
Sept. 29, 1967 0 UT OL 02 03k Set bw 4 ee
FLARES
«pm n
& [om
gs Wolse Store,
© [bier $1
310 n
X-Rays
7 | _Ke = "3 En 3 Za, = 35 x OIp
45 [se 80
8 & 8 i 5 is a a
131 10 en flux
65 Re One of she five nant magnetically disturbed daye--soderate storm contiquen; tovoasherte F region vaty diatucbed with auroral
GMP Region 8998 81s Blackout ge bigh laccudes; Honogengous auroral arcy oecantonally rayed, viatble all nighe over Wentern Europe and the Atlencte
16514 WIS(ap) a2 G = 58%; aurora overhead at ¢ = 54° in USSR at 1000, at d= 56* 1700-2300 and at ¢ = 57* 1500 and 1800-2100; aurora overhead
BE 1 Seen toren face tea 0000-1100,
Sept, 30, 196700 UT ol 02 03d Soe kt ee
FLARES
= in/os ald ayo
> Le iL
& [Cam LL
§ [om = L Votze Stor
2 TK: L
SID.
X-Rays
Ap [Ko 3a m3 = = ss 3s ra ay Gtp
35 [ose Slt0
8 06 8 i i i a
131 10 em Fux
74 Re ne of five most magnetically disturbed day ssg gtora dle out ae 1600; Lovogrhertc f eeston very dfazurted vith auroral
(4? Region 9001 527 blackout iden} rote overhead ac f= 37" In USOR 1500-1700, at 4 = 39" 2000-2000 and" at F = 60" 2500; auvors

Region (9008) x25
Region 6995 $18(3)
16511 W12(@p)5.

igh
cverhend at 6-5 57" tn torch Acetice 6600-1100,

- 144



Day 10 cm Sun- Geo-
Flux spot mag.
Ss No. Ap

Tono-

CMP of

Index Region
Ip Ia__Number

Highlights

1967 March
02 201* 179 4

03 200* 191 8

04 209% 172 6

* adjusted for burst

0

0

Qo

ie)

i)

R-8709 (4)
($28)

R-8708(3)
qu?)

Solar: spot decreasing in size with radio int. 8 in R-8703; spot

groups Sy and 6-type continue with radio int, 82 and 15 subflares
in R-8704; spot group size decreasing with radio int. 12 in R-8706;
By spot group continues with radio int. 30 and 5 subflares in R-8707;
spot group grows with radio int. 10 and 3 subflares in R-8709; spot
group continues to grow with radio int. 36 and 4 subflares in R-8711;
By spot growing with radio int. 26 and 18 subflares in R-8714; spot
group at E limb with radio int. 24 and 2 subflares in R-8715; radio
int. 22 with 4 subflares in R-8716 at E limb.

Geophysical: mostly magnetically quiet; ionospheric F region

relatively quiet.

Events: minor: Ha (R-8704) 0444 with SID, DSD, solar x-rays and m,

dm and cm solar burst, 1110, 1306, 1543 with SID, DSD, solar x-rays
and dm and cm solar burst and Dkm and m type II and IV; SIDs at 0213
with om solar burst and solar x-rays and 1425 with dm and cm solar
burst; APRs (R-8715) 0855-1620, (R-¥716) 1210-1620; DsDs (R-8704) 1115
with mand cm solar burst and 1510; m solar noise storm.

Solar: spot gone in R-8703; S-type spot group continues with radio

int. 86 and 13 subflares in R-8704; spot group continues with
radio int. 10 in R-8706; By spot group continues with radio int.
30 and 7 subflares in R-8707; spot group decreases with radio int.
10 and 1 subflare in R-8709; spot group continues with radio int.
37 and 8 subflares in R-8711; spots still growing with radio int.
26 and 2 subflares in R-8714; spot group continues with radio int.
30 and 4 subflares in R-8715; spot group with radio int. 37 and 6
subflares in R-8716.

Geophysical: mostly very slight magnetic activity, some slight

activity 0900-1500.

Events: minor: Ha (R-8704) 0505 with cm solar burst, 0627 with SID,

solar x-rays, Dkm, m, dm and cm solar burst; 2057 with SID, BSL, DSD,
dm and cm solar burst and Dkm type II; (R-8716) 0730 with SID and
BSL, and 1755; (R-8715) 0839 with solar x-rays; (R-8707) with Dkm, m,
dm and om solar burst; BSLs (R-8704) 1535, 1705 with SID and em
solar burst, 1745, 1840, 2000; ADF (R-8707) 2120, 2225, 2330; DsD
(R-8704) 2303 with cm solar burst; EPL (R-8704) 2335; m solar

noise storm.

Solar: no observations of magnetic classification of sunspot at

Mt. Wilson; spot group continues with radio int. 67 and 11 sub-
flares in R-8704; spot group continues with radio int, 10 in
R-8706; spot group continues with radio int. 22 and 5 subflares in
R-8707; spot group gone in R-8709; spot group continues with radio
int. 39 and 7 subflares in R-8711; spot group continues with radio
int. 30 and 5 subflares in R-8714; spot group continues with radio
int. 30 and 1 subfiare in R-8715; growing spot with radio int. 50
and 5 subflares in R-8716,

Geophysical: continued very slight magnetic activity.
Events: major: Ho (R-8711) impt. 2b 2103-2128 with SID, DSD and dm

and cm solar burst; minor: Ha (R-8704) 0439 with BSL and cm

solar burst, 0624 with BSL, m and cm solar burst, 0720 with Dkm,

m, dm and cm solar burst, 0744 with BSL, m and em solar burst,

0828 with BSL, APR and Dkm, dm and cm solar burst, 0918, 1426 with
BSL, 1643 with BSL, 1716 with SID, BSL, dm and cm solar burst and

m type II} (R-8716) O717E with ADF, 1243 with dm and cm solar burst,
1321 with SID and m, dm and cm solar burst; (R-8711) 1005 with m

and cm solar burst, 1910 with SID and dm and cm solar burst; (R~8703)
1210 with SID, solar x-rays and dm and cm solar burst; SID at 0113.



Highlights

1966 10 cm Sun- Geo- CMP of
Aug. Flux spot mag. Region
s Sp No. Ap. Number,
3 as*11s* 65 7 R-8415(2)
27)
4 13"116* 51 8

5 107 110 53 10 R-8422 (2)
N22)

6 103 106 50 6

7 99 102 31 5

8 9 9 LG 5

* adjusted for burst

Solar: spot continues, radio int. 19 and 1 subflare in R-8413;
spot continues, radio int. 31, 21 cm radio noise and 1 sub-
flare in R-8414; spot continues, radio int. 22 and 21 em
radio noise in R-8415; spot again 8y, radio int. 12, 21 cm
radio noise and 5 subflares in R-8422; small spot appears in
R-8427; br. green corona at NW limb; minor events: Hy (R-8413)
0357 with sudden disappearance of filament, and 1415 with cm.
and m. solar bursts and active dark filament, (R-8422) 0630
with em. solar burst.

Geophysical: very slight magnetic activity.

Solar: spot continues, radio int. 11 and 1 subflare in R~8413;
spot continues, radio int. 25 and 6 subflares in R-8414; spot
continues with radio int. 27 in R-8415; spot no longer 8y,
radio int. 16 and 4 subflares in R-8422; small spot continues,
2 subflares in R-8427; moderate green corona at NW limb;
minor events: dark surge (N30 E33) 0755.

Geophysical: slight magnetic activity; G-SWF, SCNA and SPA at
0444.
Solar: no obs. at 9.1 cm; spot continues in R-8413; spot de~

creases, 21 cm radio noise and 1 subflare in R-8414; spot
decreased in size with 21 cm radio noise in R-8415; spot with
21 cm radio noise and 1 subflare in R-8422; no activity in
R-8427; minor events: Hx (R-8414) 1125 and 1220, (R-8413)
1220 with em. and m. solar bursts.

Geophysical: continued slight magnetic activity; SCNA at 2316.

Solar: no obs. at 9.1 cm; spot continues over W limb in R-8413;
spot continues, 21 cm radio noise and 1 subflare in R-8414;
spot continues with 21 cm radio noise and 1 subflare in R-8415;
spot with 21 cm radio noise and 1 subflare in R-8422; 6 sub-
flares in R-8427; br. green corona at NW limb; major event:
He (R-8427) impt. 2£, 2105-2157 with br. surge on limb and
active prominence region; minor events: Hx (R-8427) 0620 with
active prominence region, 0827 with br. surge on limb, and
1235E with active prominence region.

Geophysical: very slight magnetic activity; G-SWB at 0326; SEA
at 0346; SEA and SFD at 1900; ionospheric F region slightly
disturbed in some sectors.

Solar: no obs. at 9.1 cm; spot continues in R-8414; spot con-
tinues with 21 cm radio noise and 3 subflares in R-8415;
spot with 21 cm radio noise and 3 subflares in R-8422; small
spot appears in R-8429; br. green corona at NW limb; minor
events: HY (R-8415) 0005, (R-8414) 1532 with active dark
filement; dark surge (N23 W70) 0939; active prominence region
(828 E limb) 1103.

Geophysical: magnetically quiet.

Soler: radio int. 20 and 7 subflares in R-8414 at W limb; spot
continues, radio int. 17 and 21 cm radio noise in R-84155
spot gone, 1 subflare in R-8422; spot continues in R-8429;
radio int, 12 on E limb in R-8435; bright green corona and
moderate red corona at NW limb; moderate green and red
coronae at NE limb; major event: Hy (R-8414) impt. 2n, 0628-
0644; minor event: HY (R-8414) 0804 with br. surge and erup-
tive prominence at limb.

Geophysical: continued magnetically quiet, slight activity
2100-2400.

- 44 =



Day 10 cm Sun- Geo-
Flux spot mag.
S__No. Ap

Tono- CMP of
Index Region
Ip Ia_Number

Highlights

1967 February
10
(Cont'd)

11 137 96 «11

12 :136 79 2

13.1339 77 4

14132 58 4

(0) 2
0 0 R-8687
(N22)
2
0 R-8688
(N16)

radio int, 23 and 5 subflares in R-8684; spot continues, radio int.
9 in R-8685; spot decreases, radio int. 14 and 3 subflares in
R-8687; spot continues, radio int. 9 in R-8688; no spot, radio int.
7 and 5 subflares in R-8691.

Geophysical: magnetically very quiet with 4 Kp0o; ionospheric F
region relatively quiet.

Event: Ho (R-8691) 0855 with cm solar burst.

Solar: no spot, radio int. 20 in R-8680; spot continues, radio int.
11 in R-8681; spot group continues, radio int. 22 and 3 subflares
in R-8682; spot group continues, radio int. 24 and 7 subflares in
R-8684; spot gone, radio int. 7 and 1 subflare in R-8685; spot
continues, radio int. 10 and 1 subflare in R-8687; spot continues,
radio int. 7 and 1 subflare in R-8688; spot appears, radio int.
13 and 2 subflares in R-8691; mod. green corona NE and NW limbs

Geophysical: slight-to-moderate activity subsiding to very slight
activity after 1200; aurora overhead in North America to = 59°
0600-1100.

Events: minor: ADFs (R-8687) 1000-1300 and 1610E-0040D, (K~8684)
1504-2200.

Solar: no spot, radio int. 11 in R-8680; spot continues, radio int.
7 in R-8681; spot group decreases, radio int. 21 and 3 subflares
in R-8682; spot group decreases, radio int. 25 and 10 subflares
in R-8684; radio int. 7 in R-8685; spot disappears, radio int. 9
in R-8687; spot continues, radio int. 8 and 2 subflares in R-8688;
spot continues, radio int. 10 and 4 subflares in R-8691.

Geophysical: magnetically quiet; ionospheric F region relatively
quiet.”

Events: minor: Ha (R-8688) 1234 with Dkm, m, dm and cm solar
burst; (R-8682) 2137; SID at 1616.

Solar: R-8680 and R-8681 go over W limb; spot group continues,
radio int. 22 and 6 subflares in R-8682; spot group continues,
radio int. 26 and 4 subflares in R-8684; radio int. 27 and 2
subflares in R-8687; spot continues, radio int. 10 and 3 sub-
flares in R-8688; spot continues, radio int. 9 and 3 subflares
in R+8691; spot appears, radio int, 8 and 1 subflare in R-8694.

Geophysical: continued magnetically quiet, some slight activity
after 1500.

Events: principal: Ho (R-8687) impt. 3b 1749-2130 with SID, dm
and em solar burst, also Dkm and m type II and IV , solar x-rays
and SDF; minor: Ho (R-8682) 2214; ADFs (R-8687) 0010 and 1404.

Solar: radio int. 16 and 1 subflare in R-8682 as region goes
over W limb; spot decreases, radio int. 26 in R-8684; radio
int. 18 in R-8687; spot group continues, radio int. 7 and 2
subflares in R-8688; spot continues, radio int. 8 in R-8691;
spot continues, radio int. 11 in R-8694; no spot, radio int.

19 and 1 subflare in R-8695.
Geophysical: magnetically quiet; ionospheric F region relatively

minor: Ho (R-8695),0850 (R-8691) 1424; APR (R-8682)
600; no solar x-ray obs. 1520 to 2154.

- 85 -



1966 10 cm
Oct. Flux
S_ Sa

Sun- Geo-
spot mag.
No. Ap

CMP of
Region
Number

Highlights

26
(ont 'd)

27° 93 «92

28 95 (94

29 101 100

30° «97: «96

31 99 97

36 5

5

27

27. 6B

35 34

R-8566
@21)

R-8560
(N32)

R-8567
(N22)

Geophysical: slight-to-moderate magnetic activity; SID at 0500;
ionospheric absorption on 30 Miz at Great Whale River 0234-2200;
cosmic ray decrease begins; homogeneous auroral arc overhead at
= 56° over U.S,S.R. 1100-1200, homogeneous band at ¢ = 57° 1500.

Solar: spot group continues, radio int. 9 and 21 cm radio noise
in R-8556; small spot continues, radio int. 7 in R-8558; small
spot continues, radio int. 7 and 1 subflare in R-8561; radio
int. 7 in R-8560; radio int. 7 in R-8554; moderate green corona
SE limb; minor events: Hy (R-8556) 1419 with cm. solar burst
and br. surge.

Geophysical: magnetically quiet until 1500, very slight activity
thereafter; cosmic ray decrease most intense; short rayed arc
overhead at $= 56° over U.S.S.R. 1400-1500 and homogeneous are
at ¢ = 56° 1600-1900, both medium brightness.

Solar: spot gone, radio int. 10 in R-8558; small spot continues,
radio int. 8 and 3 subflares in R-8561; spot appears, radio int.
4 and 2 subflares in R-8566; small spot appears, radio int. 7 in
R-8563, then disappears; spot appears in R-8567; small spot
appears, radio int. 6 in R-8560, then disappears; spot gone
but radio int. 10 in R-8556; no spot, radio int. 7 in R-8563;
radio int. 8 in R-8554.

Geophysical: slight magnetic activity 0000-0300, quiet there-
after, 2 KpOF; cosmic ray decrease begins gradual recovery
lasting until Oct. 31.

Solar: radio int. 9 in R-8558; spot gone, radio int. 9 and 1
subflare in R-8561; fy spot continues, radio int. 7 in R-8566;
By spot continues, radio int. 8 and 7 subflares in R-8567; no
spot, radio int. 12 and 1 subflare in R-8568; radio int. 8 in
R-8563; radio int, 9 in R-8556; radio int. 9 in R-8554; major
events: br. surges (R-8568) 1600-2355D; minor events: cm.
‘and m. solar bursts 1000-1050; cm. and m. noise storm 1000-
1410; active prominence region (R-8568) 0228; active filament
region (N37 W65) O811E; active dark filament (R-8566) 2008.

Geophysical: continued magnetically quiet, 2 KpO+; ionospheric
F region relatively quiet.

Solar: R-8558 over W limb; R-8561 over W limb; spot continues,
radio int. 6 and 6 subflares in R-8566; spot continues, radio
int. 5 in R-8567; radio int. 12 in R-8568; radio int. 7 in
R-8563; radio int. 8 in R-8556; radio int. 8 in R-8554; minor
events: m. and dm. solar burst 1050; m. noise storm 0730-1040,

Geophysical: very slight magnetic activity until 1500, slight-
to-moderate activity 1500-2100, moderate storm thereafter; iono-
spheric absorption at 30 MHz at Great Whale River at 1334 to
Nov. 2 at 0840; auroral veil overhead at $= 58° over U,S.S.R.
1600-1800.

Solar; spot continues, 2 subflares in R-8566; spot continues,
radio int. 8 and 1 subflare in R-8567; spot group appears,
radio int. 11 in R-8571; spot reappears, radio int. 6 in R-8560;
radio int. 12 and 1 subflare in R-8568; radio int. 7 in R-8556;
radio int. 6 in R-8563; minor event: Ha (R-8571) 1859 with br.
surge.

Geophysical: moderate magnetic storm 0000-0600, moderate activity
thereafter; cosmic ray decrease recovers; homogeneous auroral
band of medium brightness ovehead at ¢ = 55° over U,S,S.R. 1700-
1800, homogeneous arc at ¢ = 57° 1800 and short rayed band at
$= 57° 1900; ionospheric F region slightly disturbed with con-
siderable auroral blackout at high latitude.



Day 10 cm Sun- Geo~
Flux spot mag.
S$ No. Ap

Tono-

CMP of

Index Region

Ip Ia

Number

Highlights

1967 February
15 130 58 7

16 128 60 64

17:125* 60 15

18 127 70 5

* adjusted for burst

ol

Oo 4

R-8691(2)
(N15)

Solar: spot continues, radio int. 15 and 1 subflare in R-8684; new
spot appears, radio int. 20 in R-8687; multiple spot groups conti-
nue, radio int. 6 and 4 subflares in R-8688; spot continues, radio
int. 12 in R-8694; spot group at W limb with radio int. 15 and 2
subflares in R-8684; spot group continues with radio int. 10 and
2 subflares in R-8691; spot groups on E limb with radio int. 32
and 1 subflare in R-8695.

Geophysical: extremely magnetically quiet 0600-1800, increasing
to moderate storm with sc at 2348.

Events: or: Ho (R-8695) 1538E, 2304 with SID; ADF (R-8691)
0205-0529; SID at 1726.

Solar: R-8684 goes over W limb, though with radio int. 10 and 2
subflares; spot continues, radio int. 14 and 2 subflares in
R-8687; spot continues, radio int. 11 in R-8694; no spot, radio
int. 13 and 2 subflares in R-8693; radio int. 13 and 2 subflares
in R-8684; spot groups continue with radio int. 14 and 3 sub~
flares in R-8688; small spot with radio int. 8 and 2 subflares
in R-8691; several spot groups in R-8695 with radio int, 38 and
7 subflares in R-8695.

Geophysical: moderate magnetic activity increases with sc at 0835
to severe storm, one Kp8, one Xp7 until 1500, subsiding to mod-
erate activity again; 3% cosmic ray decrease begins; aurora over-
head in North America to ¢ = 59° 0600-1100 and $ = 58° 1200-1700,
overhead in U.S.S.R. to > = 44° 1100-1200, $ = 49° 1100-1200,

@ = 47° 1200-1400 and @ = 50° 1400-1900; ionospheric F region
very disturbed with some auroral blackout at high latitudes,

Events: minor: Ha (R-8695) 0200, 2210 with SID; SID at 1112 with Dkm
solar burst; sc at 0835; DSD (R-8688) 0948.

Solar: spot begins to disappear, radio int, 11 and 1 subflare in
R-8687; spot continues, radio int. 9 in R-8694; no spot, radio
int. 13 in R-8693; spot group continues with radio int. 12 in
R-8688; small spot continues with radio int. 6 and 1 subflare
in R-8691; spot groups continue with radio int. 36 and 4 sub-
flares in R-8695; spot appears, radio int. 17 and 2 subflares
in R-8698; mod. green corona NW Limb.

Geophysical: mostly slight magnetic activity; cosmic ray recovery
begins at end of day; aurora overhead in U.S.S.R. to @ = 56° 1100-
1200 and ¢ = 57° 2000-2300; ionospheric F region slightly dis-
turbed in some sectors.

Events: minor: Ha (R-8695) 0120;(R-8693) 1539; (R-8687) 1923 with
SID, dm and cm solar burst and solar x-rays; (R-8698) 2212 with
SID and solar x-rays.

Solar: spot gone, radio int. 12 in R-8687; spot growing but small
with radio int. 12 in R-8688; small spot with radio int. 7 in
R-8691; spot groups continue with radio int. 25 and 7 subflares
in R-8695; spot continues, radio int. 10 in R-8694; no spot,
radio int. 10 in R-8693; spot continues, radio int. 15 and 2
subflares in R-8698; mod. green corona SE and NW limbs; mod.
red corona NW limb.

Geophysical: very slight magnetic activity until 1500, extremely
quiet thereafter; gradual cosmic ray recovery continues.

Events: principal: Ha (R-8695) impt. 3n 1004-1134 with m, dm and
em solar burst, solar x-rays and DSD; minor: BSL (R-8687) 0130;
solar x-rays 0938; ADF (R-8695) 1410-2350.

~ 86 -



Nagy
oss 97M
Lo
og Mum. 02s 98S. oS else

7M
a ~ = . “ TM
95M \_/ Win
a) los 86M 84s

0 ‘06S
oas =—* aN
wisn \ OM rN 89M-86M 77M. 75M
igs
“ sem a an CAL
82S
Sag
30 rai) ) 24 2 2 0 8 6 4
os of Central Meridian Passage
Joly 1, 1967 UTM OOO Bt
FLARES — ins OS?
nes sea tee 10/63

7 Le
§ [ae ran
3 om
© [dem fi

310 r

KRoys
Bp [Kp 2: Pn de 4 2 rs Ets 3s o}Ip
7 Pee By

CF 8 8 ty 2 i 18 a 4

121 10 en flux

MP Region 8871 ¥27(2)

July 2, 1967 00 UT O}

One of five most magnetically disturbed daya; tonoapherte F region disturbed; nocctlucent clouds tn bright bende and billows
from 53°-57.5°H, 12,5°E-07.5°Y 2230-0145; aurore at ¥ = 58° over North Anerica 0600-1100,

2 8 5 Getta

FLARES — wis — 10/80
=28/67 = 10/80 10/76 in/53 —1n/B0_—— 1n/G0__ 1/60.
7 Len
3 [Cem i :
§ [cm rn
© Foxe n
SID.
X-Rays
Bp [Kp Fr lo res oF 1 crs A s jolie
3 {os 2 Jto
0 @ é cr) i i i Fi 7
122 10 ox flux
Tonospheric F region disturbed; bright bands of nocetlucent clovds from 52°~57%N, O1*-07H 2250-0215.
Of? Regton 88% 812
uly 3, 1967 yr hh Otte
FLARES — tees
—— is
> a ni
% [Com L
5 [om n Noise Stora =
© [Km
S10.
X-Rays
TMp ]_Ke. vy i o te oe Z . = a}
4 [se oto
0 8 & (J @ 5 is a )
125 10 em flux

87 Re
GAP Region 8873 ¥34(2)

One of five magnetically quiet days; fonospherfe F region relatively quict; moderately bright noctilucent clouds vith bright
bands and whirl from 54°-56.5°N, 02.5°-03,5°W 2300-0133 and at 50° in Western Atlantic 0200,

- 121



daly 12, 1967 00 ur Ot

S08

oe au

FLARES

om

dm.

Bursts

m

Dim

S10
X-Rays

as

2

Fe |_Ke. :

a [se

103 10 cm flux
Ee

39 RE
AP Region 8683 W20

Jaly 13, 1967 00 0 OL

i

Tonospheric F ragion dteturbed.

2 8

ci)

FLARES

1n/89

— wir

19/77 10/80

80

Bursts

a] te

jo}to

Region 8886 126
16430 W26(BE)3

Joly 14, 19600 UT OL

eo

8

a

FLARES

—18/80

ues
ies

Bursts

a]t
Olio

ny
18 10 es flux
66 Re

July 15, 1967 00 ur Ol

8 mos

8

FLARES

15/20

1/3

10/89

om

den

x Heise

m
‘Okm

Bursts

S10)

Ftp

X-Rays

oto

Bp |_Kp

a,
Ty

alse

124 10 em flux
80 ke

GHP Region 8887 $12
Region 8885 19
16429 514(89)2

iz

124



1966 10cm Sun- Geo~
June Flux spot mag.
S_ Sa No. Ap

OME of
Region
Number

Highlights

1
(Cont'd)

2 101104 74 10

3 100103 41 7

4 99102 60 4

5 99 102 43 5

6 99 102 43 4

R-8329
(N32)

R-8330
(N33)

R-8326(2)
(N17)

R-8328 (2)
($22)

Geophysical: moderate~to-severe magnetic disturbance
continues, becoming a slight disturbance 0300-0900, quiet
thereafter; cosmic ray Forbush decrease at 0000, recovery
takes place gradually, back to previous level by June 9;
ionospheric F region disturbed with some auroral absorption
at high latitudes.

Solar: no spot mag. obs. Mt. Wilson; spot continues, radio
int. 20 and 21 em radio noise in R-8314; spot gone but
radio int. 8 and 5 subflares in R-8318; spot continues,
radio int. 8 and 1 subflare in R-8326; small spot
continues, radio int. 8 and 1 subflare in R~8328; spot
continues, radio int. 12 and 2 subflares in R-8329; spot
continues and 6 subflares in R-8330; spot, radio int. 24,
21 cm radio noise, 1 subflare and moderate green corona in
R-8332; 2 subflares in R-8312; minor events: Ha (R-8330)
0412; cm. and m. solar noise at 1415; type Il, 26-39 Miz,
1910.5-1914.2; active dark filament (R-8314) 0001 and 0228.

Geophysical: mostly magnetically quiet but with slight dis-
turbance 0900-1800; S-SWF and SEA at 0411.

Solar: spot gone, radio int. 18, 21 cm radio noise and 1 sub~
flare in R-8314 near W limb; radio int. 10 and 3 subflares
in R-8318; spot continues, radio int. 7 and 4 subflares in
R-8326; small spot continues, radio int. 8 and 1 subflare
in R-8328; spot size decreasing and radio int. 12 in
R-8329; small spot in R-8330; spot continues, radio int. 20,
21 cm radio noise, 1 subflare and moderate green corona in
R-8332; 4 subflares in R-8312; spot appears again and 1 sub~
flare in R-8320; minor events: RY (S12 W60) 0845; eruptive
prominence (R-8332) 1730; active dark filament (R-8326)
2302.

Geophysical:
1500-2100.

magnetically quiet except slight disturbance

Solar: radio int. 15 in R-8314; radio int. 7 in R-8318; spot
size increasing, radio int. 12 and 4 subflares in R-8326;
spot gone but radio int. 7 in R-8328; spot continues,
radio int. 13 and 1 subflare in R-8329; small spot and
2 subflares in R-8330; spot size decreasing, radio int. 14
and 21 cm radio noise in R-8332; spot continues in R-8320;
small spot appears with radio int. 7 in R~8319; minor
event: Hy (R-8312) 1206 with br. surge.

Geophysical: continued magnetically quiet especially 0600-
1500 KpO+.

Solar: spot continues, radio int. 11 and 3 subflares in
R-8326; radio int. 7 in R-8328; spot continues and radio
Ant. 11 in R~8329; small spot and 1 subflare in R-8330;
spot continues, radio int. 16 and 21 cm radio noise in
R-8332; spot continues and 1 subflare in R~8320; small spot
continues, radio int. 12 and 2 subflares in R-8319; radio
int. 15 and 1 subflare in R-8335 at E limb.

Geophysical: continued magnetically quiet.

Solar: spot decreasing and radio int. 8 in R-8326; radio
int. 6 and 1 subflare in R-8328; spot decreasing and radio
int. 13 in R-8329; small spot and 1 subflare in R-8330;
spot continues, radio int. 13 and 21 cm radio noise in



vov. 23, 1967 or OSH tg te
FLARES
> i
& [Cam
Sion moines store
© [om
310 i
X-Rays
Ae |__Kp = z Te we a = 2 jo
g [se 10
0 i 6 3 2 5 ie a
261 10 eo flux ‘One of ten magnetically qutet days.
103 bs
exe 9078 12003)
Nov. 24, 1967 00 urd) 02 0804S Tt tate
FLARES
> Lt it
% [Cém n
§ (cm nolse stor
® Km
S10.
X-Rays
Bp [Kp Ts ry ry ie = = = ¥ ate
zo [se sjlo
Cy 8 6 0 i 5 8 a Ey
157 10 em flux one of five nost magnetically disturbed days; aurora overhead over USSR at $ = 60° 1800-1900 and at ¢ » 57°
108 Re 2000-2100; tononpheric F region disturbed with sose auroral blackout.
CMP (9093) x23, 16872 H26 ap
‘9081 $24(2)
9082 N19(3) 16570 N19 Bp
nov, 25, 1967 @ url OSH
FLARES inl
nya 1/88 —1n/93
. om i n n
& [oom i n
(cm 1 noise ayn — 1
Oke
SID i
Rays
Ap 1_Kp = i E en Ze = % alte
uf’ se ajo
& 6 08 i 15 te 2
159 10 em flux Aurora overhead over USSR at $= 59° 1600-1800 and at # = 69° 1300-1500 and 1800-2100; sonospheric F region
128 Be AUisturbed with nowe auroral blackout; br. green corona at SW Limb observed 7 days later.
‘cH 9091 526 16572 529 (Bp)4
nov. 26, 1967 00 ur 1 02 03 OS te
FLARES
—— inse2
2 pe i
& [Cam as L
5 [om wie pore > |
@ [dim
SID.
X-Rays i
[Ke r = Te ‘3 2 2 _ " fa|tp
9 [se a|0
ie iy if 8 ie 5 8 a %
162 10 ca flux Tonosphersc F region elightly disturbed {n sone sector:
109 Re
GHP 9085 12
9087 $1603)
9086 82715)
Mov. 27,1967 Dur Ol 3 Stott tg aoe
FLARES
10193 = /93 18/93
> em n i T
3 [Cam n L 1 i
& [cm as tox, n
Dkr es
S10 H
X-Rays H
7 |_Ke. ir 3a prs z= = = = = @)19
8 [se PWoptey ‘alia
CF 8 9 @ 5 18 a a

359 10 em flux
205 Re
CHP 9096 528

Aurora overhead over USSR at ¢ = 56" 1300-1500 and at ¢ = 59* 2200-2300; ionospheric F region slightly
disturbed in gone sectors.

156



1966 10 cm
Jan. Flux
s

Sun- Geo-
spot mag.
Sa__No. Ap

CUP of
Region
Number

Highlights

17 102 98 50 2

18 105 101 64 5

19 109 105 68 3

20 102 99 63 is

21 99 96 52 23

22 95 92 44 27

R-8131
7)
R-8130
N29)

R-8132 (2)
Qos)

R-8133
30)

Solar: small spot persists in R-8130; spot group decreasing
in size; 21 cm radio noise, radio int. 26 and 8 subflares
in R-8131; small spot persists, 21 cm radio noise, radio
int. 10 and 6 subflares in R-8133; major events: Hr (R-8131)
impt. 2b, 1031-1250; at 9500, 3000, 610 and 200 MAz, burst,
1032; at 793-23 Mz, IV, 1112; minor events: Ho (R-8131)
2128; at 23 MBz, burst, 0925; active dark filament (R-8131)
2136.

Geophysical: magnetically quiet; an SFD at 1801£, SFD and SPA
at 2134; lonospheric F region relatively quiet.

Solar: small spot and 1 subflare in R-8130; spot group con-
tinues, 21 cm radio noise , radio int. 28 and 12 subflares
in R-8131; small spot persists, 21 cm radio noise, radio
int. 12 and a subflare in R-8133; major events: Ha (R-8131)
impt. 2b, 2253-0120D; at 9400, 3750, 2000, 107 and 18 Mz,
burst, 2258; minor event: at 23 MHz, burst, 0910.

Geophysical: continued magnetically quiet; G-SWF, SPA and
SES at 2258; ionospheric F region relatively quiet.

Solar: small spot persists and 4 subflares in R-8130; spot
group continues, 21 em radio noise, radio int. 32 and
3 subflares in R-8131; small spot persists, 21 cm radio
noise, radio int. 13 and 4 eubflares in R-8133; minor
events: Hy (R-8130) 0023, 0900E, 1047 and 2231E, (R-8133)
1110; dark surge (R-8130) 0930.

Geophysical: continued magnetically quiet.

Solar: small spot and 3 subflares in R-8130; spot group
persists, 21 cm radio noise, radio int, 29 and 2 sub-
flares in R-8131; small spot group, 21 cm radio noise
and radio int. 13 in R-8133; minor events: Ha (R-8130)
0023 and 0302E; at 9400, 3750 and 2000 MHz, burst, 0023;
at 3750, 2000 and 100 MHz, burst, 0304.

Geophysical: slight-to-moderate magnetic disturbance with
a preliminary sudden commencement at 0204; S-SWF, SPA and
SFD at 0020, SL-SWF at 0300 and 0450, SPA at 1710; at
1930 auroral homogeneous are overhead at ¢ = 67°,
visible as glow on horizon at g = 59° over Western
Europe; ionospheric absorption on 30 MHz Great Whale
River beginning at 0728; ionospheric F region disturbed;
a cosmic ray decrease starting at about 0200.

Solar: spot persists and two subflares in R-8130; spot
group still $y after 6 days of no magnetic observations, 21
em radio noise, radio int. 21 and a subflare in R-8131;
spot persists, 21 cm radio noise and radio int. 12 in
R-8133,

Geophysical: slight-to-moderate magnetic disturbance con-
tinues; with Kp 5e from 1800-2100; ionospheric absorp-
tion on 30 MHz Great Whale River ending at 2214; iono-
spheric F region slightly disturbed; cosmic ray decrease
continues.

Solar: small spot persists in R~8130; spot no longer y and
decreased in size, 21 cm radio noise, radio int. 16 and
3 subflares in R-8131; small spot persists, 21 cm radio
noise and radio int. 9 in R-8133; spot group appears,
radio int. 6 and 4 subflares in R-8139; minor event:
active dark filament (R-8131) 1829E.

Geophysical: slight~to-moderate magnetic disturbance con-
tinues with more disturbance 0600-1500 Kp 5-4-5+; iono-
spheric absorption on 30 MHz at Great Whale River 0159-
2120; ionospheric F xegion disturbed in some sectors;
cosmic ray decrease continues.

-7-



a

Sept. 8, 1967 00 gr, O1

FLARES

[Ip

3

lojio

cy
132 20 em flux
108 Re

GHP Region (8974) S03
8966 $1403)
16494 822(ap)2

Sept. 9, 1967 Mur O OZ 03 5 o6

a

FLARES

ws —itis7

Bursts

xs

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oct 11, 1967 0 ur Ol

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1966 10 cm Sun- Geo-
Aug. Flux spot mag.
S Sa No. Ap

CMP of
Region
Number

Highlights

16 93 95 36 4

17 94 97 35 2

18 95 98 35 10

19 98100 27 20

20 99 102 24 7

21 100 103-22 5

R-8438 (3)
(N27)

R-8441
(827)

R-8440
(N28)

R-8444
Q31)

Solar: spot group decreases in size, radio int. 8, 21 cm radio
noise, and 3 subfleres in R-8435; no spot, radio int. 13, 2i
om radio noise in R-8438; spot group continues, radio int. 9
and 4 subflares in R-8429, small spot continues, 3 subflares
in R-8440; moderate green corona on NE limb; minor event:

Ho (R-8429) 0730 with cm. solar burst..

Geophysical: continued magnetically quiet; SFD at 2123; SPA

at 2252; ionospheric F region relatively quiet.

Solar: spot group decreases in size, radio int. 12 in R-8435;
small spot group reappears, radio int. 13, 21 cm radio noise
in R-8438; spot appears, radio int. 9 and 1 subflare in
R-8447; spot continues on W limb in R-8429; small spot con-
tinues, 1 subflare in R-8440; br. green corona NE limb; small
spot appears in R-8444; major event: Hr (R-8438) impt. 2n,
0900-1130 with dark surge and active dark filament and cm.
and m. solar bursts; minor events: Hy (R-8429) 0028 with cm.
solar burst, (R-8442) 2120.

Geophysical: magnetically very quiet, 3 Kp 00; G-SWF, SCNA,
SPA and SFD at 0030; noctilucent clouds seen in Greenland at
# = 60° at 0500-0600.

Solar: spot group decreases in size, radio int. 15 in R-8435;
small spot group continues, radio int. 10, 21 cm radio noise
and 4 subflares in R-8438; spot continues, radio int. 10 in
R-8447; small spot continues in R-8440; small spot appears
in R-8454; br. green corona at NE limb; moderate green coro-
na on SW limb; 1 subflare in R-8444; minor events: active
filament region (N21 W30) 0812; sudden disappearance of
filament (N21 W30) 0924.

Geophysical: slight magnetic activity 0900-2100; SL~SWF, SPA
and SES at 1818; noctilucent clouds seen in Greenland at
6 = 67° at 0355-0425.

Solar: small spot continues, radio int. 14 and 1 subflare in
R-8435; small spot group continues, radio int. 12, 21 cm
radio noise, and 5 subflares in R-8438; spot continues,
radio int. 10, and 2 subflares in R-8447; small spot con-
tinues, 1 subflare in R-8454; moderate red and green coronae
on NE limb; minor events: Hy (R-8447) 0430, (R-8438) 04268
with em. solar burst.

Geophysical: moderate magnetic activity; S-SWF, SCNA and SPA
at 0434; ionospheric F region slightly disturbed; at 0000-
0500 aurora overhead at ¢ = 59° over North America.

Solar: small spot continues, radio int. 15 and 2 subflares
in R-8435; spot continues, radio int, 9 and 1 subflare in
R-8447; small spot continues, radio int. 10, 21 cm radio
noise in R-8438; small spot continues in R-8454; br. green
corona on NE limb.

Geophysical: slight magnetic activity 0000-0900, quiet there-
after; SL-SWF and SPA at 1843.

Solar: no spot, radio int. 15 and 5 subflares in R-8435; no
spot, radio int. 10, 21 cm radio noise and 1 subflare in
R-8438; no spot, radio int. 8 in R-8447; moderate green
corona at NE limb; minor events: HY (R-8435) 1553 with br.
surge and 1615E with br. surge.

Geophysical: continued magnetically quiet; ionospheric F
region relatively quiet.

- 46 -



1966 10 cm Sun- Geo- CMP of Highlights
Jan. Flux spot mag. Region
S 8, No. Ap Number

9 8 7 2B 8 Solar: small spot persists, 21 cm radio noise and a sub-
flare in R-8117; small spot persists in R-8122; a sub-
flare in R-8226,
Geophysical: slight magnetic disturbance 0000-0300 and 2100-
2400 Kp 30 and 4o but very quiet 0300-1200 Kp 0o0#0o.

10 80 77 «7 7 Solar: no spots; 21 cm radio noise decreasing but 3 sub-
flares in R-8117; minor event: Ho (R-8117) 1126E.
Geophysical: magnetically quiet.

11 81 78 8 2 R-8117(2) Solar: small spot observed only one day and a subflare in
(w22) R-8126; a subflare each in R-8117 and R-8122; minor
event; Ho (N28 90) 0720z.
Geophysical: magnetically very quiet, five Kp 0o or 0+.

2 8 Bl 0 2 Solar; no spots; radio int. 9 apparently in R-8131 at E
Limb.
Geophysical: continued magnetically very quiet, five Kp
00 or OF

13 87 84 «7 2 (R-B124) Solar: small spot in R-8130; small spot group, 21 cm
(u24) radio noise, radio int. 18 and 8 subflares in R-8131;
moderate green corona at NE limb; minor events: Ha
(R-8131) 2242; at 600, 260 and 23 MAz, bursts, 1018 and
1136.
Geophysical: continued magnetically very quiet, five Kp
Qo or OF; ionospheric F-region relatively quiet.

14 93 90 30 3 Solar: small spot persists in R-8130; growing y spot group,
21 cm radio noise, radio int. 23 and 13 subflares in
R-8131; a subflare in R-8132; 3 subflaxes in R-8133; moderate
green corona at NE limb; minor events: Ha (R-8131) 0128,
0825E, 0952, and 1849; at 10700, 8800 and 2800 Miz, burat,
1903; active dark filament (R-8131) 0011; active prominence
region (R-8131) 0810 and 1008; br. surge (R-8131) 0835.

Geophysical: continued magnetically quiet; S-SWF, SPA and

SFD at 1902.

15 102 98 36 5 Solar: small spot persists in R-8130; moderate sized spot
group persists, 21 cm radio noise, radio int. 38 and 4
subflares in R-8131; a subflare in R-8132; small spot
appears and 2 subflares in R-8133; radio int. 8 at
NI8E20; radio int. 7 at S45E60; weak green corona at
NE limb; minor events: Hy (R-8131) 1040E; at 260 MHz,
bursts, 0724 and 1044.

Geophysical: continued magnetically quiet.

16 106 103 57 0 Solar: small spot persists and 3 subflares in R-8130; spot
group persists, 21 cm radio noise, radio int. 44 and
6 subflares in R-8131; small spot persists, 21 cm radio
noise and radio int. 8 in R-8133; radio int. 9 at N18
E7; radio int. 9 at S45 E45; minor events: Ha (R-8131)
1845E; at 10700, 2800, 554, 328, 200, and 108 MHz, burst,
1852; at 17-41 Mz, IV, 1852.5.

Geophysical: magnetically extremely quiet; Kp Oo except for

OF from 0300-0600 and 2100-2400; ionospheric F xegion
relatively quiet.



1966
July

10 em Sun- Geo-
Flux spot mag.
S Sa No. Ap,

CMP of
Region
Number

Highlights

16

7

18

19

20

100 103 48 «6

98 101 42 11

98 101 49 4

98 102 38 5

99 102 65 6

R-8396
(s18)

R-8398 (3)
(N16)

R-8397 (2)
(N25)

R-8400(2)
(N25)

Solar: radio int. 9 and 21 cm radio noise in R-8392; radio
int. 7 in R-8394 at W limb; spot gone but radio int. 8
in R-8396; spot, radio int. 16 and 21 cm radio noise in
R~8397; spot appears in R-8385; spot with radio int. 21
and 2 subflares in R-8401; 2 subflares in R-8402; spot
and 1 subflare in R~8398; moderate green corona on NE
limb; minor events: active dark filament (R-8398) 0833E-
0940D; eruptive prominence (N70 W limb) 2045-2250.

Geophysical: magnetically quiet with very slight activity
1500-2400.

Solar: radio int. 9 and 21 em radio noise in R-8392; radio
int. 7 in R-8396; spot continues, radio int. 16, 21 cm
radio noise and 1 subflare in R-8397; spot growing, radio
int. 20, 21 cm radio noise and 2 subflares in R-8401;
radio int. 8 and 1 subflare in R-8402; small spot conti~
nues in R-8398; br. green corona on NW limb; minor event:
cm., m., and dm. solar bursts 0915-0930; cm. and m. solar
bursts 1245-1430 and 1930; active dark filament (R-8392)
2120-0135.

Geophysical: slight magnetic activity 0000-1200, slight acti-
vity thereafter; at 0000-0500 aurora at #=59° not over
North America; faint noctilucefit clouds over western
Europe seen at 55° at 2130 to 0030.

Solar: spot appears with radio int. 9, 21 cm radio noise
and 2 subflares in R-8392; spot continues, radio int. 14
and 21 om radio noise in R-8397; spot continues, radio
int. 16, 21 cm and 2 subflares in R-8401; small spot dis-
appears from R-8398; spot, radio int. 8 and 1 subflare in
R-8404; minor event: active dark filament (R-8400) 0834E.

Geophysical: magnetically quiet; br. display noctilucent
clouds over Western Europe seen between 55° and 57.5° at
2145 to 0135.

Solar: small spot continues with radio int. 9 and 21 cm
radio noise; radio int. 7 in R-8396; spot continues,
radio int. 14 and 21 cm radio noise in R-8397; spot con-
tinues, radio int. 13, 21 cm radio noise and 8 subflares
in R-8401; radio int. 6 in R-8402; small spot continues
with 3 subflares in R-8404; minor events: br. surges
(R-8401) 0136, (R-8404) 0158; active dark filament
(R-8400) 0202 and 1620.

Geophysical: continued magnetically quiet; ionospheric F
region relatively quiet; br. display noctilucent clouds
seen over Western Europe between 55° and 59.5° from 2200
to 0100.

Solar: small spot last seen with radio int. 8 in R-8392;
radio int. 7 and 1 subflare in R-8396; spot continues,
radio int. 13 and 21 om radio noise in R-8397; spot decreas-
ing, radio int. 10, 21 cm radio noise and 1 subflare in
R-8401; small spot appears with radio int. 6 in R-8402;
small spot disappears in R~8404; radio int. 23 and 1 sub-
flare in R-8405 at E limb; small spot appears in R-8400;
minor events: m. solar burst 1258; active dark filament
(R-8397) 1051.

Geophysical: continued magnetically quiet; SPA at 0725;
ionospheric absorption on 30 MHz at Great Whale River
begins at 2310.

- 40 -



Day 10 cm Sun- Geo- Iono- CMP of
Flux Spot mag. Index Region
$ No, Ap Ip Ia Number

Highlights

1967 June
28
(Cont'd)

29 129 65 9 o 0

30 122 894 3.2

27 and 11 subflares in R-8863; spot groups continue with radio int.
26 and 3 subflares in R-8867; spot continues with radio int. 12
and 1 subflare in R-8871; 1 subflare in R-8875; spot at E limb with
radio int. 18 and 1 subflare in R-8876; br. green corona NE limb;
mod. green corona NW and SE limbs.

Geophysical: mostly quiet to very slight magnetic activity, though
slight activity throughout the day; ionospheric F region slightly
disturbed; cosmic ray decrease, 5%, reaches maximum early in day,
begins slow recovery into July; faint noctilucent cloud N5S.5 W01.5
at 0100 and faint bands from aircraft N53 W50 at 0200.

Events: minor: Ha (R-8863) 0342, 0942, 1102, and 1433 with dm solar
burst; Ha (R-8867) 0719 with cm solar burst, and 1259; Ha (R-8871)
0950; Hy (R-8858) 1052; cm, dm, and m solar burst 1000; cm solar
burst 1255, dm solar bursts 1330-2100; Dim type IV 2045.

Solar: radio int. 10 and 1 subflare in R-8858; spot group continues
with radio int, 22 and 7 subflares in R-8863; spot group continues
with radio int. 23 and 9 subflares in R-8867; spot continues with
radio int. 12 and 1 subflare in R-8871; radio int. 10 in R-8875;
spot continues with radio int, 20 in R-8876; mod. green corona SE,
SW, and NW limbs.

Geophysical; mostly slight magnetic activity.

Events: mino} Ho (R-8863) 0042 with cm and dm solar burst and 2333;
dm solar bursts 0950-1020 and 1330-1940; m solar bursts 0230-1145
and 2130-0200; Dim solar bursts 0625-1405.

Solar: two spot groups with radio int. 15 and 10 subflares in R-8863;
spot group continues with radio int, 20 and 6 subflares in R-8867;
spot continues with radio int. 11 in R-8871; spot appears with radio
int. 8 and 2 subflares in R-8875; spot continues with radio int.

19 and 3 subflares in R-8876; spot at E limb with radio int. 8 in
R-8877; mod. green corona SE, SW, and NW limbs.

Geophysical: continued mostly slight magnetic activity; ionospheric
F region slightly disturbed; faint bands and billows in noctilucent
clouds N45 WOL, 0150-0225,

Events: minor: Ho (R-8863) 0344 with ADF; Ho (R-8858) 0600; Ha (R~
8876) 0733; m solar bursts 0410-1240; SDF (R-8868) 1635-1950,

- 120 -



1966 10 cm
Mar. Flux
S Sa

Sun-
spot
No.

Geo- GMP of
mag. Region
Ap __ Number

Highlights

29
(ont '4)

30 99 «99

31 111 110

April
1 107 107

2 106 106

42

52

64

58

18

13° -R-8238
30)

Geophysical: moderate magnetic disturbance continues 0000-
0900, quiet thereafter; SPA's at 0253 and 2220; S-SWF,
SGNA and SES at 0323; SCNA, SES and SEA at 0946; S-SWF,
SCNA, SEA and SPA at 1100; SL-SWF, SPA and SFD at 1512;
SL-SWF and SPA at 1617; S-SWF, SCNA, SEA, SPA, SES, and
SFD at 1745; cosmic ray decrease continues but recovery
begins; ionospheric F region disturbed with some auroral
absorption at high latitudes; auroral rays overhead at
$ = 56° from 1900-2000 and homogeneous band at $= 57° at
2100 in U.S.S.R.

Solar: spot group growing and By, radio int. 88, 21 om
radio noise and 9 subflares in R-8223; small spot con-
tinues, radio int. 6 in R-8227; radio int. 11 in R-8232;
radio int, 15 at N10 E25; major event: Ha (R-8223)
dmpt. 2n, 1241-1500 with cm. and m. solar bursts and
type IV, 19-41 MAz, 1307-1450; dark surge (R-8223) 1248;
minor events: Ha (R-8223) 0359, O725E, 1734E, and 1930;
cm. solar burst 1950.

Geophysical: continued magnetically quiet; S-SWF, SCNA and
SPA at 0030; S-SWF, SCNA, SEA, SPA, SES, and SFD at 1245;
SFD at 1330E; G-SWF at 1610; S-SWF, SPA and SES at 1716;
G-SWF, SONA, SEA, SPA and SES at 1952; cosmic ray recovery
from decrease continues.

Solar: spot group still By, radio int. 96, 21 cm radio
noise, and 13 subflares in R-8223; spot continues and
radio int. 7 in R-8227; radio int. 19 at N1O E15; major
event; Hoa (R-8223) impt. 2b, 1807-2045 with cm. solar
bursts; active dark filament (R-8223) 1948 and 2000; br.
surge (R-8223) 1904; minor events: Ho (R-8223) 0008E,
0731 and 0810E; cm. solar bursts 0110, 1100 and 2340;

m. solar burst 1120; active dark filament (R-8223) 0624.

Geophysical: continued magnetically quiet; SPA's at 0109 and
0143; S-SWF at 0818; S-SWF, SCNA, SEA, SPA, SES, and SED
at 1900; cosmic ray recovery from decrease continues.

Solar: spot group still By, radio int. 66, 21 cm radio
noise, and 10 subflares in R-8223; spot gone but one sub-
flare in R-8227; small spot, radio int. 6 and one subflare
in R-8242; major event: Ho (R-8223) impt. 2b, 1735-1934
with cm. solar burst; minor events: Ha (R-8223) 1103E,
1412 and 1553; cm. solar burst 0240; m. solar noise storm.

Geophysical: continued magnetically quiet until preliminary
sudden commencement at 1237, 1200-2400 Kp 4o404-5+; S-SWF
at 0710; SCNA at 1330; G-SWF and SPA at 1632; SL-SWF, SCNA,
SEA, SPA, SES, and SFD at 1740; SFD at 1921; active xayed
band, position uncertain, visible to $= 59° in Western
Europe.

Solar: spot group y, no observation for radio int., 21 cm
radio noise and 13 subfleres in R-8223; small spot
continues in R-8242; minor events: Ha (R-8223) 0057, 0805,
1119, and 2213K; active dark filaments (R-8223) 0012-0401
and 2213-03/0525; cm. solar bursts 0055, 0330, 0505, 1130,
1500, 1740, 2110, and 2220; m. solar noise storm.

Geophysical: moderate magnetic disturbance until 0900,
quiet thereafter; S-SWF, SGNA and SPA at 0058; SCNA at
0300; SGNA and SEA at 0941; S-SWF, SPA and SES at 1136 and



1966 10
Mar. Fl
s

Sa

Sun- Geo- CMP of Highlights
spot mag. Region
No. Ap Number

le 80

ll #79

wm 82

1s 88

16 (94

79

78

78

80

81

87

93

13-10 (R-8199) Solar: spot persists, radio int. 8 in R-8191; 2 subflares
(w20) in R-8184.
Geophysical: slight-to-moderate magnetic disturbance 0000-
0300 and 1200-1500, otherwise quiet; ionospheric absorp-
tion on 30 MRz at Great Whale River continues to 0511.

10 6 Solar: spot at W Limb and 2 subflares in R-8191; a subflare
in R-8204.
Geophysical: slight magnetic disturbance 0000-0300 and 2100-
2400 but very quiet 0600-1800.

° 6 Solar: no spots.
Geophysical: slight magnetic disturbance 0000-0300, quiet
thereafter.

o Solar: radio int, 8 on NE limb; small spot appears and a
subflare in R-8204.

Geophysical: continued magnetically quiet until 1800,
severe disturbance 2100-2400 Kp6-; ionospheric absorption
on 30 MAz at Great Whale River begins at 1410; homogeneous
are, occasionally rayed and sometimes double, with base
overhead at ¢ = 65-66°, 2000-2400 in Western Europe.

0 64 Solar: spot gone in R-8204; spot appears, radio int. 16 and
6 subflares apparently in R-8207 which is first reported
on March 15; 2 subflares in R-8199; radio int. 6 at
$10 E55; minor events: br. surge (R-8207) 0902 and 1030;
active prominence region (R-8207) 0155 and 1719; cm. solar
burst 0230.

Geophysical: continued severe magnetic disturbance ending
at 1800; ionospheric F region very disturbed with con-
siderable absorption at high latitudes; ionospheric
absorption on 30 MHz at Great Whale River continues to
2306; homogeneous band aurora overhead at § = 56° in
U.S.S.R. at 0900, rayed arc at = 53° from 1000-1100 and
at ¢ = 57° at 1200; aurora overhead in North America at
= 57° from 0000-0500 and at ¢ = 55° from 0600-1100;
aurora in Western Europe became rayed arc at 0000 and
moved southwards, seen at least to ¢ = 58° but clouds
prevented determination of precise position.

9 7 R-8204 Solar: spot group growing, radio int. 36, 21 cm radio noise
27) and 19 subflares in R-8207; radio int. 8 at S10 E50; minor
events: Ha (R-8207) 0145, 0800E, 0825, 1234, 1535, 1636,
and 2237; br. surges (R-8207) 0140, 0227, 0810, 0914,
1030, 1232, 1521, 1624, and 1811; active prominence region
(R-8207) 0838; cm. solar bursts 0510, 1310, 1530, 1640,
1810, 1905, and 2020; type IV, 16-41 Mz, 2137-2250.
Geophysical: magnetically quiet; an S-SWF at 0143, and SPA
at 1335; S-SWF and SED at 1450; an SED at 1537} S-SWF,
SCNA, SEA, SPD, and SPA at 1636; SFD's at 1849, 1901,
1904, 1907E, 2008, 2242, and 2258; ionospheric F region
disturbed with some auroral absorption at high latitudes.

26 7 Solar: spot group BY and growing, radio int. 48, 21 cm
radio noise and 21 subflares in R-8207; radio int. 9 at
$10 E40; small spot appears, radio int. 11 in R-82045
major evente: Ha (R-8207) impt. 2b, 0910K-1007 with cm.
and m. solar burets; br. surges (R-8207) 0902 and 0914;
eruptive prominence region (R-8207) 0923; dark surge
(R-8207) 0916; minor events: Ha (R-8207) 0042, 0219,

-4-



of events reported; for example, 1537-1925 (12). The term "radio int."
for solar regions has been used in a conventional sense to refer to

the maximum intensity at wave-length 9.lcm as observed at Stanford Uni-
versity; the unit of intensity is 104°K. From March 1966 onward radio
noise bursts are designated by "cm" for frequencies >1000 MHz and by
"m" for frequencies <1000 MHz with nominal time given only to nearest

5 minutes. IT IS IMPORTANT TO NOTE THAT MANY DATA USED ARE PROVISIONAL.

Geophysical Highlights. Comments on magnetic activity are usually based
on the Kp indices (which are sometimes cited in terms of 1/3 of the unit,
thus: 5-, 50, 5+). Comments on general ionospheric conditions are pro-
vided by W. R. Piggott. Auroral displays are usually mentioned only if
the southern limit reached 4 (geomagnetic latitude) less than 60°; data
sources are J. Paton, G. Sprague, N. V. Pushkov. G. Sprague's data are
the southernmost reported observations of aurora in the various sectors
and are not therefore necessarily the southernmost limit of the aurora.
Comments on Forbush cosmic ray decreases are from the Deep River charts,
limited to those of 3% or greater. Polar cap absorption data are from
provisional listings by ESSA's Space Disturbance Forecast Center. Nocti-
lucent cloud dates are furnished by J. Paton. IT IS IMPORTANT TO NOTE
THAT MANY DATA ARE PROVISIONAL.

Events. These are indicated as a separate category for the period January-
June 1967. For 1966, much of the same information appeared in the sec-
tions on solar or geophysical highlights. The times given are nominal,
and the convention used throughout is that 4-digit numbers signify time

in hours and minutes, and always in UT. The events range in importance
from minor to major to principal to solar proton. HY flares are selected
from the statistically grouped reports of "Solar-Geophysical Data" and
indicated by region and beginning time if importance one, or by importance,
beginning and ending times if greater than importance one. Solar noise
activity is indicated by Dkm, m, dm or cm frequency range of the burst, if
fixed frequency, or by Type II or IV with frequency range if spectral data.
Sudden ionospheric disturbances of any type are merely indicated by SID.
Solar x-rays as observed by Explorer 33, reported by J. A. Van Allen, are
listed. The following abbreviations are used for surge and prominence
activity with region of phenomenon specified: DSD - dark surge on disk;
BSL ~ bright surge at limb; APR - active prominence region; AFR - active
filament region; ADF - active dark filament; BSD - bright surge on disk.
Sudden commencements (sc) of geomagnetic storms, onsets of Forbush cosmic
ray decreases and onsets of polar cap absorption events are also given by
time of beginning.

EXPLANATIONS FOR JULY - DECEMBER 1967

At the beginning of each month will be a chart of the sun for that month
locating the calcium plages, as reported by the McMath-Hulbert Observatory,
at the latitude and longitude of their Central Meridian passage (CMP) and
identified by the last two digits of the plage serial number. The general
activity of the region is approximately evaluated, mainly from area and
intensity of plage and associated sunspots, by use of the symbols: G =
great activity, M = moderate activity and S = small activity. The 5x104°K
values of the Stanford University 9.lem intensity measurements at central
meridian on each date are connected by contours.

-3-



‘Avgust 12, 196700 ur dl 02

%

FLARES

——»
1/6

Bursts

‘Qlp

iz

‘allo

135 10 em flux
77 ke

GAP Region 8926 W13
Region 22(2)
16853. 522(Bp)5

03

‘Tonospheric F region disturbed.

CC

Avguat 13, 1967 ur Ol

FLARES.

=In/e

om

‘dm

—

Noise stor

Bursts

TM

‘km

2}ip

S10
X-Roys

to

[—Ke.

ip

6 [se

134 10 cx flux

75 Re

AP Region 8933 N25
Region 6929 S19(4)
16456 $16(Bp)4
16461 W25(Bp)2

Auguat 14, 196700 ur O

2%

FLARES

—— we

om

26

En D}

ae 3

3)

a

127 10 cm flux
66
AP Rogion (8946) WLS

i

6 a i

Tonospherte F region slightly disturbed {n aome acctors.

aw

Aogust 15, 1967 (0 or Ol

FLARES

1n/26

om
den

m

Bursts

‘Okm

S10)

=

ip
[fo

aio
io

X-Rays

Bp [Ke
6 [ose

a

124 10 cw flux
Gl ne

‘GHP Region 8940 19
16466 120 Bp

132 -



Day 10 cm Sun- Geo-
Flux spot mag.
S No. Ap

Tono- CMP of Highlights
Index Region
Ip Ia Number

1967 May
25 205 164 130

26 213* 174 146

* adjusted for burst

9 9 R-8818(2) Solar: one spot group with radio int. 12 in R-8816; spot groups continue
(25) with radio int. 106 and 14 subflares in R-8818; spot groups continue
with radio int. 29 and 6 subflares in R-8819; spot groups continue with
radio int. 24 and 5 subflares in R-8821; three spot groups with radio
int. 38 and 4 subflares in R-8824; spot with radio int.22 and 1 sub-
flare in R-8829; spot continues with 5 subflares in R-8825.

Geophysical: continued very slight magnetic activity until 0900 increasing
rapidly to moderate storm 0900-1200 then increasing to severe magnetic
storm following sc at 1235, 1 Kp9o 2100-2400, 1 Kp8+, 1 Kp8-; Forbush
decrease continues dropping 10% rapidly late in the day; clouds over
Western Europe but brilliant auroral display seen over Scotland,
England and Northern France, bright rayed arc or band with base over-
head between $ = 58° and $ = 61° persisted throughout the display
except for a brief period around 0030; there were two periods of
maximum activity over the afore-mentioned areas 2329-2358 and 0130-
0210; during the first, in addition to the rayed band, there were a
rayed arc with base overhead at ¢ = 56° and a homogeneous arc at $ =
63°, the display at this time was brilliantly colored and accompanied
by flaming; near 2358 a further homogeneous arc appeared at $ = 54°,
rays occasionally overhead to = 52°, seen over Western Atlantic to
$ = 43°; ionospheric F region very disturbed in most sectors with wide-
spread auroral absorption at high latitudes; PCA event reaches peak
absorption of 11 db, 0700-1300.

Events: major: HO (R-8818) 1129-1236, impt. 2n; minor: Ho (R-8828)
0041 with cm solar burst; Ha (R8819) 0221 with cm solar burst and SID,
0847 with cm solar burst; Ha (R-8818) 0632 with cm and dm solar burst
and SID, 1041 with cm, dm and m solar burst, solar x-rays and SID, 1106
with m solar burst, 2043 with SID, 2245 and 2257 with cm and dm solar
burst and SID; Ho (R-8824) 0528; m noise storm 0430-2400D; cm, dm
and m solar burst 1205; dm solar bursts 1040-2400D; dm and m type IV
1235 with dm solar burst, and 1600 with cm and dm solar burst, dm type
IV 1520; SID 1710, 1920 and 2300 with cm and dm solar burst, 2050 with
cm solar burst; APR (R-8829) 1440-1510.

8 7 R-8819(2) Solar: spots gone in R-8816; spot groups continue with radio int. 97
(s21) and 1] subflares in R-8818; spot groups growing with radio int. 36 and
2 subflares in R-8819; spot groups continue with radio int. 31 in
R-8821; spot groups continue with radio int. 34 and 8 subflares in
R-8824; spot continues with radio int. 28 and 1 subflare in R-8829;
small spot continues with radio int. 8 and 1 subflare in R-8825; br.
green corona NE, SW, AND NW limbs; mod. green corona SE limb.
Geophysical: continued severe magnetic storm 0000-0600, 1 Kp90, 1 Kp9-,
subsiding to moderately severe 0600-1500 subsiding then to moderate
activity thereafter; Forbush decrease reached maximum about 0000, then
begins gradual recovery until May 30; aurora continues from activity
of previous night with homogeneous arc, occasionally rayed, inter-
mittently over Western Europe at $ = 63°, 2225-0200, rays
were overhead at $ = 61° at 0005 and patches occurred this time;
display visible to ¢ = 55°, aurora over North America about ¢ = 45°
0000-0500 as low as 25° around 0305 as faint homogenéous arc, a rayed
band at 0200 of brilliant red formed a red rayed corona at zenith by
0210, multiple forms and active displays continued through the night
hours, @ = 50° 0600-1100; ionospheric F region very disturbed with
widespread auroral and polar cap absorption at high latitudes.

- 110 -



1966 10 cm Sun- Geo- CMP of Highlights
Dec. Flux spot mag. Region
SS, No. Ap Number

5 114*1il* 69 20 (R-8602) Solar: spot group continues, radio int. 10 and 5 subflares in R-8593;
(818) spot group continues, radio int. 14, 21 em radio noise and 7 sub-
flares in R-8607; spot group continues with radio int. 25, 21 cm
radio noise and 3 subflares in R-8606; radio int. 8 and 4 subflares
in R-8609; minor events: HY (R-8606) 0804 with cm. solar burst; br.
surge (R-8593) 2208.
Geophysical: continued slight-to-moderate magnetic activity; SID
at 1210; homogeneous auroral band of medium brightness overhead at
$= 57° over U.S.S.R. 1900-2100; display visible over Western
Europe behind cloud to ¢ = 59°; ionospheric F region very dis-
turbed with auroral blackout at high latitudes.

6 119%116* 68 7 Solar: spot group continues over W limb with radio int. 7, 21 cm
radio noise and 1 subflare in R-8593; 1 subflare in R-8594; spot
group continues, radio int. 22 and 6 subflares in R-8606; spot
group continues with radio int. 10 and 2 subflares in R-8607;
spot group appears with radio int. 9 and 1 subflare in R-8609;

6 subflares at E limb in R-8610; moderate green corona on NE limb.
Geophysical: slight magnetic activity until 0900, quiet thereafter;
homogeneous auroral band of medium brightness overhead at ¢ = 58°
over U.S.S.R, 1900-2000; ionospheric F region slightly disturbed

in southern hemisphere.

7 11118 64 4 Soler: spot group continues, radio int. 20, 21 cm radio noise and
2 subflares in R-8606; spot size decreasing, radio int. 13 and 3
subflares in R-8607; spot group continues, radio int. 12 and 4
subflares in R-8609; spot group, radio int. 20 and 3 subflares
in R-8610; radio int. 6 in R-8597; minor events: Ha (R-8597)
0815E, (R-8610) 0817, 1000B, 1036, 1457E, 1731 with cm. and m.
solar bursts, 2100 and m. solar burst, and 2235, (R-8609) 1005
with m. solar burst; dark surge (R-8607) 1045.

Geophysical: continued magnetically quiet, 2 KpOt; SID at 0323

and 2020; ionospheric F region relatively quiet.

8 128124 88 4 Solar: spot’ group continues, radio int. 18, 21 cm radio noise and
1 subflare in R-8606; new spot group appears, radio int. 20 and
6 subflares in R-8607; spot group continues, radio int. 17 and 4
aubflares in R-8609; spot group continues, radio int. 26, 21 cm
radio noise and 8 subflares in R-8610; major events: Hy (R-8609)
impt. 2n 1209-1250D with m. solar burst and dark surge; minor
events: Hy (R-8607) 0900 with m. solar burst, (R-8610) 1655,
1929 and 2309, (R-8599) 2334 with m. noise storm; dark surge
(R-8609) 1119E.

Geophysical: continued magnetically quiet, 1 Kp0o, 2 KpO#, until

2100, slight activity thereafter; SID at 1211; ionospheric F
region relatively quiet.

9 151146 86 3 Solar: spot group continues, radio int. 16, 21 cm radio noise and
1 subflare in R-8606; spot groups continue, radio int. 21, 21 cm
radio noise and 3 subflares in R-8607; spot group growing, radio
int. 31, 21 cm radio noise and 5 subflares in R-8609; spot group
growing, radio int. 41, 21 om radio noise and 19 subflares in
R-8610; 2 subflares at N22 on E limb; major events: HX (R-8610)
impt. 2b, 1755-1907 with cm. and m. solar bursts; minor event:
Ha (R-8610) 0955 with active filament region and 1126, both with
cm., m. and dm. solar bursts, (R-8607) 1045 with active filament
region, (R-8609) 1045 and 1125 with dark surge and both with cm.,
m. and dn. solar bursts, (R-8606) 2006; cm. and m. solar burst 1520;
m. noise storm 2300 (Dec. 8)-0500; active dark filament (R-8610)
2007-0719; br. surges (R-8612) 2117.

Geophysical: magnetically quiet, 3 KpOt, 1 Kp0o; SID at 0300, 1756
and 1859; ionospheric F region relatively quiet:

* adjusted for burst



CMP of
Region
Number

Highlights

R-8274
(4)

(R-8277)

(S26)
R-8278
QB0)

Solar: spot stable, radio int. 22 and 2 subflares in
R-8272; spot gone and radio int. 7 in R-8273; spot gone
but moderate green corona in R-8275; radio int. 13 and
1 subflare in R-8279; moderate green corona in R-8284;
minor events: HO (R-8275) 0845E; active dark filament

(R-8273) 0025, 0115, 0141, 0253, and 2320; br. surges

(R-8275) 1330 and 1705; cm. solar burst 0330.

Geophysical: continued magnetically extremely quiet
6Kp000+.

Solar: spot smaller, radio int. 21, 21 em radio noise, and
8 subflares in R-8272; tiny spot and radio int. 6 in
R-8273; 4 subflares in R-8278; tiny spot, radio int. 14,
21 cm radio noise and 1 subflare in R-8279; 1 subflare in
R-8283; spot, moderate green corona and radio int. 12
in R-8284; minor events: Ra (R-8272) 0840; active dark
filament (R-8273) 0000-0202.

Geophysical: continued magnetically quiet; SPA at 1404.

Solar: spot continues, radio int. 11, 21 cm radio noise,
and 5 subflares in R-8272; 2 subflares in R-8278; small
spot, radio int. 14, 21 cm radio noise, and 3 subflares
in R-8279; small spot in R-8282; spot, radio int. 14 and
3 subflares in R-8284; minor events: HG (R-8272) 0352;
active dark filament (R-8273) 0307-0357; (R-8279) 1238-
2355,

Geophysical: continued magnetically quiet except slight
disturbance 1800-2100.

Solar: spot gone, radio int. 7 in R-8272; small spot,
radio int. 13, 21 cm radio noise, and 1 subflare in
R-8279; small spot and 6 subflares in R-8282; spot, radio
int. 14, 21 cm radio noise and 1 subflare in R-8284;

1 subflare in R-8285.

Geophysical: continued magnetically quiet until 1200,
slight disturbance thereafter; jonospheric F region
disturbed.

- 24 ~



Sept. 24, 196700 or 0)

03 he

FLARES.

Bursts

a 2

lip

Pte

131 10 en flux
SL Re

GHP Region 8994 W16(5)

Sept, 25, 19679 ura

8 cy 7

@ i

Tonoapherte F region relatively quiet; cosmic cay recovery complete by end of day.

2 8 4 OF OF Oe

FLARES.

le

=1nj99_—— in /99

L mm
L

Bursts

2 22

}Ip
to

133 10 em flux
61 Re
‘GHP Region 8988 N16(2)

Region 8987 S18(2)
Region 6996 133,

Sept. 26, 1967 GOUT OL

03 05g

FLARES

om

din
m

Bursts

‘Okm

S10

X-Rays,

Ap [_Kp.

O]tp

a {ose

210

0
136 10 cm flux
33

Re
GHP Region (89883) 312

Sept. 27, 1967 © uT OL

8 6

One of che ten magnetically quiet 4

Foe

‘9

@ 5

Aonoapheric F region relatively quiet.

FLARES

— Il
I

Bursts

Te

OG

2}10

137 10 es flex
50 Re

CHP Region 8997 129
Regton (89934) 520
Region 8993 S17(5)

& i

09

One of the ten magn cleally quiet days

ie 15

Sonospherte F region relatively quiet.

- 143 -

|
i
7
|



1966 10 cm

Feb. Flux
8s

Sa

Sun- Geo-

spot mag.
No. _ AP

CMP of
Region
Number

High lights

8

10

il

4

85

85

86

86

85

86

86

85

82

83

84

83

84

84

83

B 4

10 3

iL 7

4 ua

16 6

(R-8167)
qul7)

R-8161 (2)
Ql)

Solar: spot gmup persists, 21 cm radio noise, radio int. 12
and a subflare in R-8158; 2 subflares in R-8154; weak green
corona at E limb apparently in R-8161; minor event: at
606 MHz, burst, 1246; active dark filament (R-8154) 0325
and 0531; active prominence regions (N48 W Limb) 0800,

QG2 W Limb) 0930.

Geophysical: continued magnetically very quiet Kp 0+ from

0000-1200 followed by slight disturbance 1200-1500 Rp 3-.

Solax: spot group persists, 21 cm radio noise, radio int. 13
and a subflare in R-8158; radio int. 8 and a subflare in
R-8161.

Geophysical: continued magnetically very quiet; ionospheric
F region relatively quiet.

Solar: spot group continues, 21 cm radio noise, radio int. 11
and 5 subflares in R-8158; radio int. 8 and 21 cm radio
noise at NE limb apparently in R-8163; major event: Ha
(R-8158) impt. 2F, 0946E-1006; dark surge (R-8158) 0912;
minor events: Ha (R-8158) 0734E; dark surges (R-8158)
0742 and 0743.

Geophysical: continued magnetically quiet except slight
disturbance 2100-2400.

Solar: spot group persists, 21 cm radio noise, radio int. 11
and 2 subflares in R-8158; radio int. 8 and 21 cm radio
noise on NE limb apparently in R-8163; minor events: Ha
(R-8158) 1440, 1641 and 2335; at 960 and 328 MHz, burst,
1716; at 9400, 3750, 2800, 2000, and 1000 Miz, burst, 23395
at 108 Miz, burst, 2349; br. surge (R-8158) 1648.

Geophysical: slight magnetic disturbance 0000-0300 Kp 3- and
1200-2400 Kp 343-3-303 S-SWF and SPA at 0122 and 2339.

Solar: spot group decreasing, 21 cm radio noise and radio
int. 10 in R-8158; radio int. 10, 21 cm radio noise and
10 subflares in R-8166; moderate green corona on NW limb;
minor events: Ho (R-8166) 1331, (R-8158) 2356; at 960 and
328 Miz, burst, 2059; active prominence region (R-8166)
1300.

Geophysical: slight magnetic activity 0000-0300, especially
quiet 1200-2400, all Kp 0o or O+.

Solar: small spot and radio int. 7 in R-8158 at W limb; spot
group appears, 21 cm radio noise, radio int. 12 and a sub-
flare in R-8166; radio int. 7 in R-8162; moderate green
corona continues on NW limb; minor event: Ha (R-8158)
0354.

Geophysical: slight magnetic disturbance 0000-0300, quiet
thereafter.

Solax: spot group By, 21 cm radio noise and radio int. 14
in R-8166; radio int. 7 in R-8162; radio int. 9 in R-8163;
moderate green corona continues on NW limb; moderate green
corona in R-8172; minor event: at 960 and 328 MHz, burst,
1943.

Geophysical: magnetically very quiet, five Kp Oo or 0+}
ionospheric F region relatively quiet.

Solar: spot no longer py but growing, 21 cm radio noise,
radio int. 15 and a subflare in R-8166; radio int. 7 in
R-8162; moderate green corona in R-8172.

Geophysical: magnetically quiet, especially 0000-0900
Rp 040000; ionospheric F region relatively quiet.

- 10 -



Sept. 16, 196700 urd 02

FLARES

— 198:

om

‘dm

m

Bursts,

‘Oxm,

S10,

SRays

‘Ap [Kp a

tp

u Pee

p]to

ny
125 10 em Flux

39 Re
GHP Region (2977) 120

Sept. 17, 1967 urdl oe

5 cg 3 i 15 ty a

Ce A: Oe: A

a

FLARES.

20/8:

em

dm

Bursts

2 Tz iz rs = i

126 10 cm flux
44 Re

GHP Region (6992) N17
Region (8969) 109
Region 2979 530(4)
16502 s29(ap)

Sept. 18, 1967 00ur OO?

cs 0 iz 5 iy a

One of ten sagnetically quiet days; fonospheric F region relatively quiet.

oS eth at

FLARES

om L

dm n

TM

Bursts,

Dim

S10

i

Rays,

‘Ap [Kp 2

az_[ se

3 z
1657203) T2396,

Ci
128 10 em flux
50 Re

CHP Regson (6990) $10
Region 8980 N15,

Sept. 19, 1967 05T O

6 06 ® ty 6 if a

FLARES
26/73

=in/72 0/72 20/72 ——1¢/85

3e 3s 23, 3 Fy

127 10 ew flux

59 Re

GHP Region 8906 $23
16503 s24¢By)5

8 & @ ia i 18

‘Aurore overhead ot ¢ = 59° in USSR from 1900-2000; bright green corona cbserved 7 daye earlier on SE Liab.

- 141 -

ra
Psa
q



1966 10 cm Sun- Geo- CMP of Highlights
May Flux spot mag. Region
S$ Se No. Ap Number

24 115 118 68 2 -R+8309(2) Solar: no spot mag. obs. Mt. Wilson; spot continues, radio
(N26) int. 32, 21 cm radio noise and 12 subflares in R-8302;
spot decreasing, radio int. 40, 21 em radio noise and
1 subflare in R-8310; radio int. 9 and 1 subflare in
R-8312; radio int. 14 and 3 subflares in R-8300; spot
appears, radio int. 25 and 8 subflares in R-8314; br.
green corona on NW limb; moderate green corona on NE limbs
minor events: Hy (R-8312) 0622E, (R-8300) 0659E, O714E and
1943, (R-8314) O800E, (R-8302) 1642E; cm. and m. solar
bursts 1405; m. solar noise storm; type IV, 22-41 Miz,
1443-1512.
Geophysical: magnetically very quiet 5 Kp 0o or 0+;

ionospheric F region relatively quiet.

25 112 115 64 5 R¥8310 Solar: spot continues, radio int. 32, 21 cm radio noise and
(N16) 10 subflares in R~8302; spot decreasing, radio int. 6,
21 om radio noise and 6 subflares in R-8310; radio int. 9
and 1 subflare in R-8312; radio int. 9 and 2 subflares in
R-8300; spot increasing, radio int. 21, 21 cm radio noise
and 4 subflares in R~8314; radio int. 8 in R-8309; major
Ha (R-8312) impt. 2b, 1042E-1230 with em. solar
burst; active filament region (R-8312) 1045E; minor
events: Hy (R-8302) 0448, 0521 with m. solar burst, 0625E
with cm. and m. solar bursts, 0718, 0757 and 0936E,
(R-8310) 1506, cm. and m. solar bursts at 1305, 1535 and
2350; type IV, 25-320 MHz, 1534-1545 and type II, 1537.2-
15553 type II, 21-41 MHz, 0154.5-0201.2.
Geophysical: continued magnetically quiet until a prelimi-~
nary sudden commencement at 2327; SPA at 0623; S-SWF,
SCNA, SPA and SFD at 1536; SFD at 1730.

26 109 112 70 78 Solar: spot continues, radio int. 18, 21 cm radio noise and
4 subflares in R-8302; spot decreasing, radio int. 17,
21 cm radio noise and 7 subflares in R-8310; radio int. 8
in R-8312; spot increasing, radio int. 44, 21 em radio
noise and 4 subflares in R-8314; radio int. 9 and 1 sub-
flare in R-8309; old cycle fy spot appears, radio
int. 10 and 3 subflares in R-8318; minor events: Hy
(R+8310) 0933 with em. and m. solar bursts; cm. solar
burst at 1600; m. solar noise storm.

Geophysical: magnetically quiet 0000-0600 followed by
severe disturbance 0900-2400 Kp 707060707-; SCNA at 1923;
aurora at $ = 55° over North America 0600-1100; ionospheric
absorption on 30 Miz at Great Whale River 0936-2036;
ionospheric F region very disturbed with some auroral
absorption at high latitudes.

27 106 108 66 5 R+8312(3) Solar: no spot mag. obs. Mt. Wilson; radio int. 9 and 1 sub-
(N33) flare in R-8302 at W limb; spot decreasing, radio int. 15
and 21 cm radio noise in R-8310; radio int. 7 and 3 sub-
flares in R-8312; spot growing, radio int. 49, 21 cm
radio noise and 5 subflares in R-8314; radio int. 7 and
1 subflare in R-8309; spot growing, radio int. 17 and
4 subflares in R-8318; radio int. 13 and 1 subflare in
R-8320; minor events: cm. solar burst at 1410; m. solar
noise storm; active prominence region (N50 E90) 0806.
Geophysical: moderate magnetic disturbance 0000-0300

followed by very quiet 4 KpO+; SFD at 1407, SCNA at 1610;
weak noctilucent clouds visible over Weatern Europe at
latitude 56°, 2245-2330 UT; ionospheric F region disturbed.



10.

il.

"KOCMAYECKME JAHHbIE'TM (Cosmic Data), chief editor N. Benkova, IZMIRAN
p/o Academichesky gorodok, Moscow Obl., USSR. Monthly.

No. 3 (133), data for March 1967, issued 1968, received WDC-A
October 1968.

Geomagnetic variations, ionosphere, cosmic rays, earth
currents, sunspot numbers.

“COSHEYHBIE DAHHbIETM (Solar Data), chief editor V. A. Krat, Central
Astronomical Observatory of the USSR Academy of Sciences, Leningrad
M-140, USSR. Monthly.

1968 No. 6, data for June 1968, published September 1968,
received WDC-A November 1968.

Solar centers of activity, magnetograms, sunspots,
filaments, prominences, flares, solar radio emissions -
fixed frequency and spectral, corona and short research
articles.

"Solare , peobachtungsergebnisse" (Solar Data), edited H. Daene,
F. W. Jager, F. Furstenberg, H. Kunzel, D. Schulz, W. Dittmar,
Heinrich-Hertz-Institut fur Solar-Terrestrische Physik, DDR 1199
Berlin-Adlershof. Monthly.

Vol. 19(68), data for September 1968, received WDC-A
November 1968.

Solar radio emission, sunspot magnetic data.

“Geophysikalische Beobachtungsergebnisse" (Geophysical Data),
edited J. Taubenheim, K. Sprenger, R. Knuth, W. Dittmar, Heinrich-
Hertz-Institut fur Solar-Terrestrische Physik, DDR 1199 Berlin-
Adlershof. Monthly.

Vol. 19(68), data for August 1968, received WDC-A
November 1968.

Ionosphere, atmospheric noise, cosmic rays.

"Ionospheric Data in Japan", the Radio Research Laboratories, Ministry
of Posts and Telecommunications, Kokubunji, Tokyo, Japan. Monthly.

Vol. 20 No. 5, data for May 1968, issued August 1968,
received WDC-A October 1968.

Ionospheric and solar radio emission data and radio
propagation conditions.

"The Netherlands Monthly Bulletin - Ionospheric, Geomagnetic,
Cosmic Ray, Solar Radio Noise and Earth Current Data", Joint
publication of Royal Netherlands Meteorological Institute, de Bilt,

- 166 -



Day 10 cm Sun- Geo
spot mag.

Flux
Ss

No.

Ap

Tono~
Index
Ip Ia

CUP of Highlights
Region
Number

1967 April
03 133

04 125

05 122

06 119

54

52

62

63

5

15

il

12

0

it)

0

Qo

0

4

R-8751(4) Solar: radio int. 17 in location of R-8740 at W limb; radio int. 15
(N32) and 1 subflare in location of R-8739 at W limb; small spot continues
with radio int. 7 and 4 subflares in R-8745; small spot with radio
int. 10 and 2 subflares in R-8751; spot group classed By with radio
int. 17 in R+8752; spot group continues in R-8754; radio int. 8 in
R-8758; radio int. 8 and 1 subfiare in R-8753; spot with radio int.
12 in R-8761; br. green corona NE and NW limbs.
Geophysical: slight magnetic activity 0000-0300, quiet thereafter
with 1 KpO+.
Events: major: Ha (R-8752) impt. 2n 1140-1250 with em and m solar
burst; minor: Ho (R-8739) 0706, 0937 and 1230; Ho (R-8745) 1521;
m solar burst and SID at 0025; BSL (R-8740) 0215-0625; APRs (R-8739)
0605 with dm solar burst and 0945-1530, BSLs (R-8739) 0605 and 1055
with m solar burst; BSLs (R-8741) 0605 and 1205 with Dkm solar burst;
EPL (N33-44 E limb) 0600; SID and x-rays at 1425.

R-8752(3) Solar: small spot continues with radio int. 6 and 4 subflares in R-8745;
qs) spot continues with radio int. 10 and 2 subflares in R-8751; spot no
longer Sy with radio int. 14 and 2 subflares in R-8752; spot gone in
R-87543 spot group appears with radio int.10 and 4 subflares in
R-8758; radio int. 7 and 1 subflare in R-8753; spot continues, radio
int, 14 in R-8761; br. green corona NE and NW limbs.
Geophysical: preliminary sc at 0304 with magnetic activity varying
from moderate to slight throughout day; aurora overhead in U.5.S.R.
at $ = 59° 1500-1600 and 1800-2000, at ¢ = 58° 1600-1800; cosmic
ray decrease of about 3% with gradual recovery through April 6.
Events: minor: Ha (R-8758) 0637, 0750 and 1730; Ha (R-8745) 1030; m noise
storm 0700-1200 and 1250-1930; ADF (R-8745) 0210; EPL (S19 E limb)
0310; BSD and BSL (N19 W limb) 0330 and 0810; DSD (R-8758) 0805;
EPL (R-8746) 1130 and (N55 W65) 1130 with m solar burst; DSD (R-8753)
2025 and ADF (R-8754) 2135-0115.

Solar: small spot with radio int. 6 in R-8745; small spot group conti-
nues with radio int. 14 and 3 subflares in R-8751; spot continues
with radio int. 14 and 2 subflares in R-8752; spot growing with
radio int. 13 and 4 subflares in R-8758; radio int. 8 and 1 subflare
in R-8753; spot growing with radio int. 12 and 2 subflares in R-8761;
mod. green corona NE limb.

Geophysical: slight magnetic activity continues; aurora overhead in
U.S.S.R. at @ = 58° 1500-1700.

Events: minor: cm solar burst 0700, m noise storm 0700-1205; APRs
(N50 W70) and (R-8752) 0930 and EPL (N55 W65) 1135.

R-8754(3) Solar: spot gone in R-8745; small spot group continues with radio int.

(N25) 14 and 5 subflares in R-8751; spot continues with radio int. 13 in
R-8753(2) |. R-8752; spot continues with radio int. 13 and 5 subflares in R-8758;
(823) spot appears with radio int. 15 and 1 subflare in R-8753; spot conti-

nues vith radio int. 10 and 2 subflares in R-8761; mod. green corona
NE limb; br. green corona NW limb.

Geophysical: slight magnetic activity continues.

Events: minor: Ha (R-8751) 0712; APRs (S64 W75) and (S40 W55) 0830;
APR (R-8753) 0830; APR (N35 W70) 0830; EPL (S10) 0900; ADF (R-8760)
and (R-8753) 2105-0600; cm and dm solar burst 1320.

-~ 98 -



Sept. 12, 1967000T O02 OSHS tte
FLARES
> Ls i m I i
3 Cam a 1 i i
2(cs mM i n fl
km n
SID, i n i
XeRays i
Bo [Kp & oF T= Zo. ie z w }tp
« [se ]t0
cy cc @ 5 is a a
130 10 em €lux
79 Re one of five magnetically quiet days; fonoapheric F region relatively quiet.
sepe. 13, 19670 ur Ol 2S tg tes
FLARES
= 10/62
>
3 [Com
5 (om i n
oF beer n n
310
X-Rays
Tp L_Ke z ray a Sa ca 3 a D [S19
23 [se TREC, ar
8 8 cc) ie 5 iy Ey
126 10 ca Flux
65 Re Jonospherie F region disturbed; auroral reyed band and rays overhead in Western Hurope at 4 = 63° at 2250; aurora overhead
G#P Region 8972 N14(2) ar é = 37" dy USER 1700-2000 and at 4 = 58°, 1900-2100; aurora overhead at ¢ = 59° over North Anerica 0000-0500 and at
4 = 58" 0600-1100.
sept. 14, 19670001 02,03 HOSTS aka
FLARES
> Le L n
3 [Cae i ra
ics
Oke n
S10
X-Rays n
Ap [Ko a a ie. ie En 3a 3 3e Jin
ui [Tse 10
& 6 cr) @ iy fy a 4
126 10 cn flux
31 Re Tonoapheric F region disturbed with sone auroral blackout at high latitudes; aurora overhead ac ¢ © 55% in USSR from 1600-
GHP Region 2976 523¢6) 1700 and ae ¢ = 57° ac 1500, 1900-2200.
Region 8978 S16(6)
Region 8973 17
16500 W116)?
sept. 15, 19670007 | OG
FLARES
> n n n
3 [dm i n
3 (ce
Dim
S10, i i
Roy i
TMp [_Kp 3 = res = i Te va ns }ip
wT se b }io
0 [ & 09 15 ie a i

129 10 ew flux
36 Re

Some fonospheric auroral blackout at high lecitudes; homogeneous suroral acc over mid-Aclentie at g = 64° at OLG5; aurora
overhead at # = 58* in USSR at 0000, 1500 and 2000-2300.

140 -



Day 10 cm Sun- Geo-
Flux spot mag.
S$ No. Ap

Tono-
Index
Ip_Ia

CMP of
Region
Number

Highlights

1967 March
05 182* 164 11

06 180* 148 8

07 166 «6137S

08 158 98 2

09 160 85 «12

* adjusted for burst

0

0

0

2

2

1

i)

3

R-8711.(2)
(823)

R-8714
(16)

R-8715(2)
(N22)

R-8716
(s22)

Solar: spot group at W limb with radio int. 36 and 6 subflares in
R-8704; spot group gone in R-8706; spot group continues with radio
int. 14 and 3 subflares in R-8707; spot group now BY, growing with
radio int. 34 and 10 subflares in R-8711; spot group continues with
radio int. 26 and 7 subflares in R-8714; spot group continues with
radio int. 30 and 6 subflares in R-8715; spot continues to grow
with radio int. 54 and 7 subflares in R-8716.

Geophysical: very slight to slight magnetic activity; aurora overhead
in U.$.S.R. to = 57° 1500-1900.

Events: Ho (R-8704) 2138; BSL (R-8704) 0345 and 0510 both with cm
solar burst, 1602 with SID and cm solar burst; DSD (R-8711) 0714;
STDs at 0205 with cm solar burst and 0940 with solar x-rays, Dkm
and m solar burst; Dkm type IV at 1811; m solar noise storm.

Solar: spot over W limb but 4 subflares in remains of R-8704; spot
group continues with radio int. 28 and 3 subflares in R-8707; spot
group decreases with radio int. 28 and 1 subflare in R-8711; spot
group continues with radio int. 26 and 6 subflares in R-8714; spot
group continues with radio int. 36 and 9 subflares in R-8715; spot
continues with radio int. 60 and 2 subflares in R~8716; spot appears
with radio int. 8 in 8708.

Geophysical: very slight magnetic activity.

Events: major: Ha (R-8715) impt. 2n 1326-1411 with cm solar burst;

nor: Ha (R-8704) 0209 with dm and om solar burst, (R-8707) 0918E
with Dkm solar burst, (R-8715) 2256 with cm solar burst and ADF;
SDF (R-8715) 0417; DSD (R-8711) 0820; BSL (R-8704) 2153; ADF
(R-8715) 2209.

Solar: spot group at W limb with radio int. 23 in R-8707; spot group
continues with radio int. 20 and 4 subflares in R-8711; spot group
size decreasing with radio int. 22 and 1 subflare in R-8714; spot
group continues with radio int. 29 and 1 subflare in R-8715; spot
continues with radio int. 50 and 11 subflares in R-8716; small
spot continues in R-8708; br. green corona NE, NW and SW limbs.

Geophysical: mostly magnetically quiet, some slight activity
1200-1500; ionospheric F region relatively quiet.

Events: minor: SID at 0945 with Dkm, m, dm and cm solar burst;

Dkm and m solar bursts at 0740, 1008, 1035 and 1225; dm and cm
solar burst at 1852; notably quiet period for solar x-rays from
1616 to March 8 at 2148.

Solar: spot group continues with radio int. 21 in R-8711; spot group
continues with radio int. 20 and 3 subflares in R-8714; spot group
continues with radio int. 32 and 2 subflares in R~8715; spot group
continues with radio int. 54 and 18 subflares in R-8716; spot gone
in R-8708; br. green corona NE limb; mod. green corona SW and NW
limbs.

Geophysical: magnetically very quiet, 2 KpGo, 3 Kp0+.

Events: minor: Ho (R-8711) 2215 with ADF, BSD and m noise storm;
ADF (853 W limb) 1425 with m and cm solar burst at 1518; Dkm and
m solar bursts at 1113 and 1305.

Solar: spot group continues with radio int. 18 and 2 subflares in
R-8711; spot group continues with radio int. 26 and 9 subflares in
R-8714; spot group growing with radio int. 39 and 6 subflares in
R-8715; spot group continues with radio int. 56 and 2 subflares in
R-8716.

- 91 -



1966 10 cm Sun- Geo- CMP of Highlights
Feb. Flux spot mag. Region
S Sa No Ap _Number

16 85 83 13 5 R-8162(2) Solar: spot continues, radio int. 13 and a eubflare in
w24) R-8166; radio int. 8 and a subflare in R-8163; no report
on 21 em for rest of month; moderate green corona S20
E limb; major event: active dark filament (R-8166)
impt. 3, 1356-2356; minor event: He (R-8167) 0925.
Geophysical: continued magnetically quiet.

17 84 82 «19 4& R-8163(3) Solar: spot continues, radio int. 12 and a subflare in
(12) R-8166; radio int. 7 in R-8162; small spot appears and
a subflare in R-8171; strong green corona persists at
$20 E limb; minor events: at 960 and 328 MHz, burst,
2152; active dark filament (R-8166) 1358, 2042, 2216,
and 2400,
Geophysical: continued magnetically quiet.

18 84 82 24 3 R-8166 (2) Solax: spot group growing and radio int. 13 in R-8166;
031) radio int. 6 in R-8162; spot continues, radio int. 8
and 2 subflares in R-8171; a subflare in R-8172; minor
events: Bo (R-8171) 1409; at 610 and 200 Miz, burst,
0858; dark surge (R-8171) 1424.
Geophysical: continued magnetically quiet; ionospheric
F region relatively quiet.

19 83 81 32 4 Solar: spot group continues, radio int. 12 and 3 subflares
in R-8166; radio int. 7 in R-8162; spot continues and
radio int. 8 in R-8171.
Geophysical: magnetically quiet 0000-1200, slight-to-
moderate disturbance 1200-2400; ionospheric F region
slightly disturbed in some sectors.

20. 85 83 39 17 Solar: spot group continues, radio int. 10 and a subflare
in R-8166; radio int. 7 in R-8162; spot group now By,
radio int. 20 and 8 subflares in R-8171; minor event:

Ha (R-8171) 1324E; disappearance of active dark filament
(R-8171) 1356.

Geophysical: slight-to-moderate magnetic disturbance until
1800; aurora over North America at ¢ = 60° from 0000-0500
and at ¢ = 59° from 0600-1100; ionospheric absorption on
30 Miz at Great Whale River 0304-2302; ionospheric F
region disturbed with some auroral blackout at high lat-

itudes.
21 88 8 41 4 R-8172 (2) Solar: small spot group persists and radio int. 12 in R-8166;
(824) radio int. 7 in R-8162; spot group growing, radio int. 22
R-8171 and 2 subflares in R-8171; a subflexe in R-8173; a small
22) spot and a subflare appears in R-8174.

Geophysical: magnetically quiet.

22 88 8 SO 14 Solar: small spot group persists, radio int. 11 and a sub-
flare in R-8166; radio int. 6 in R-8162 at W limb; spot
group continues, xadio int. 17 and 5 subflares in R-8171;
spot persists, radio int. 8 and 4 subflares in R-8174;
small spot appears, radio int. 7 and 6 subflares in
R-8177; strong green corona on NW limb; minor events
Ha (R-8177) 0902E and 1009E, (R-8174) 0902E and 1020E;
active dark filament (R-8174) 0845; dark surge (R-8177)
0902; br. surge (R-8177) 0913.

Geophysical: magnetically quiet 0000-1200, slight-to-
moderate disturbance 1200-2400; ionospheric absorption
on 30 MHz at Great Whale River beginning at 0829; iono-
spheric F region disturbed.



Day 10 cm Sun- Geo- Iono- CMP of Highlights
Flux spot mag. Index Region
S No. Ap _Ip Ta Number
1967 March
31 Events: major: Ha (R-8740) impt. 2n 0359-0449 with SID, solar x-rays
(Cont'd) and dm and cm solar burst, (R-8751) impt. 2n 1155-1405 with Dkm, m,
dm and cm solar burst; minor: Ho (R-8739) 1333 with SID and cm
solar burst, (R-8740) 1629 with SID, m, dm and om solar burst, 1752
with BSL and 2059; APR (R-8739) 0800-1350; SIDs at 2215 with cm
solar burst and 2348 with solar x-rays and cm solar burst; dm and
cm solar bursts at 1850, 1950 and 2025; m solar noise storm.

1967 April
01159 105 18 © O R-8745(3) Solar: two spot groups continue with radio int. 46 and 9 subflares
($22) in R-8740; small spot group continues with 1 subflare in R-8741;
R-8746(2) spot group continues with radio int. 10 and 2 subflares in R-8745;
(N16) spot group continues with radio int. 30 and 5 subflares in R-8739;
small spot with radio int. 10 in R-8751; small spot with radio int.
26 and 3 subflares in R-8752; small spot in R-8754; mod. green and
red corona NE limb.
Geophysical: preliminary sc at 0807 followed by moderate activity;
aurora overhead in U.S.S.R. at = 57° 1400-1600 and 1800-2209.
Events: major: Ha (R-8739) impt. 2b 0010-0043 with SID, impt. 2£
1026E-1103 with cm solar burst, impt. 2n 1416-1427 with cm, dm, m
and Dkm solar burst, BSL, solar x-rays and SID; Ho (R-8740) impt.
2n 0640B-0724 with cm, dm, m and Dkm solar burst; minor: Ha
(R-8740) 0120 with cm and dm solar burst, solar x-rays and SID,
0151 with cm and dm solar burst, 0238 with cm solar burst and SID,
0319 with cm and dm solar burst, 0348 with cm and m solar burst
and SID, 0537, 0618 with cm, dm, m and Dkm solar burst and SID,
0740 with m solar burst, 0835 with cm, dm, m and Dkm solar burst,
SID, BSL and APR, 12352 with cm, da and m solar burst; Ha (R-8745)
0632 with dm solar burst, 0815 with cm and dm solar burst and SID;
Ho. (R-8739) 1005 with SID, 1804, 1946 with cm, dm, m, solar burst
and SID, 2250 with SID; Ha (R-8751) 2058 with cm solar burst, type
IL and SDF; SID with cm, dm, m and Dkm solar burst at 1305; SID
with cm, dm and m solar burst at 1620; BSDs (R-8740) 0525 and 0835,
EPL (N32 E Limb) 0640, APR (R-8740) 0635-1425, BSLs (R-8740) 0805,
EPL (N60 E limb) and APR (R-8741) 0930.

02141 «#79 «#12 «0 2 Solar: spots continue though going over W limb with radio int, 35
and 7 subflares in R-8740; spots continue over W limb with 2 sub-
flares in R-8741; spot group continues with radio int. 9 and 4 sub-
flares in R-8745; spot group continues over W limb with radio int.
25 and 8 subflares in R-8739; spot continues with radio int. 10
and 1 subflare in R-8751; small spot continues with radio int. 18
and 4 subflares in R-8752; small spot in R-8754.

Geophysical: slight-to-moderate magnetic activity 0600-1800, very
slight activity thereafter; aurora overhead in U.$.S.R. at $ = 57°
1100-1400 and at $ = 58° 1400-1600; ionospheric F region slightly
disturbed in some sectors.

Events: minor: Ha (R-8739) 0135 with SID, 0526, 0759 with dm solar
burst, 0932 with dm and m solar bursts, 1055 with dm and m solar
bursts, 1320 with em and dm solar bursts and SID, 1517 and 2009;
(R-8740) 0408 with cm solar burst and SID and 0504; SID at 0155,
0235 and 1932; ADF (R-8745) 0325-G715; APRs (R-8740) 0705-1600;
EPL (N56 E limb) 0500-0900 and BSL (N63 E limb) 0705; APR (N20
W40) 0930; ADF (R-8752) 2055.



Day 10 cm Sun~ Geo- Iono- CMP of
Flux spot mag. Index Region
S__No. Ap Ip Ia Number

Highlights

1967 April
22130 76 «418 0 2

23 127 94 21 (1) 2 R-8779(2)
(N22)

R-8778(4)
(N22)

24129 74 29° 0 5 R-8781
(s14)

25 131 78 8 O21

26 124 66 3 0 O (R-8793)
(933)

Solar: spot continues with radio int. 25 and 3 subflares in R-8776;
spot continues with radio int. 14 and 3 subflares in R-8778; spot
group continues with radio int. 17 and'3 subflares in R-8779; small
spot with 1 subflare in R-8781; small spot still growing with radio
int. 16 and 4 subflares in R-8777; spot group with radio int. 17
and 4 subflares in R-8785.

Geophysical: moderate magnetic activity 0000-1200, slight activity
1200-2400; auroral glow at $ = 58° over North America 0600-1100;
ionospheric F region disturbed.

Events: minor: Ho (R-8785) 0925; ADF (R-8776) 0055; EPL (S25 E lit)
2050-2230; cm solar burst 2020-2100.

Solar: spot continues with radio int. 22 and 2 subflares in R-8776;
spot groups with radio int. 14 and 2 subflares in R-8778; spot
group decreasing in size with radio int. 16 and 1 subflare in
R-8779; small spot continues in R-8781; spot continues with radio
int. 13 and 3 subflares in R-8777; spot group continues with radio
int. 18 and 3 subflares in R-8785.

Geophysical: slight magnetic activity until moderate storm develops
after 1400; ionospheric F region disturbed.

Events: minor: Ha (R-8777) 0024 with cm solar burst and SID, and
0523; Ha (R-8785) 0600; Ha (R-8781) 0745; SID at 1811.

Solar: spot continues with radio int. 20 and 1 subflare in R-8776;
spot groups continue with radio int. 16 and 4 subflares in R-8778;
spot group continues to decrease in size with radio int. 16 and 3
subflares in R-8779; small spot continues with 1 subflare in
R-8781; new spot appears with 2 subflares in R-8777; spot group
continues with radio int. 17 and 11 subflares in R~8785.

Geophysical: moderate magnetic storm continues; ionospheric F
region very disturbed in some sectors, generally disturbed with
auroral blackout at high latitudes.

Events: minor: Ha (R-8778) 0739, 1025 and 1801 with cm solar burst;
em and dm solar bursts 2100-2215; APR ($22~38 E limb) 1018; SID at
2348.

Solar: spot continues with radio int. 18 in R-8776; spot groups
continue with radio int. 14 and 4 subflares in R-8778; small
spot with radio int. 16 and 5 subflares in R-8779; small spot
continues with 1 subflare in R-8781; spot continues over W limb
with radio int. 10 in R-8777; spot group growing with radio int.
17 and 8 subflares in R-8785; small spot group with 1 subflare in
R-8788; radio int. 8 in R-8796 at E Limb.

Geophysical: slight magnetic activity until 1200, quiet thereafter.

Events: minor: Ha (R-8785) 0227 with cm and dm solar bursts; Ha
(R-8777) 0425 with cm and dm solar bursts, 0927 with Dkm, m, dm
and cm solar bursts, SID and x-rays, and 1044; Ha (R-8781) 0503
with cm solar burst and 1224; Ho (R-8788) 0755; Ho (R-8779) 1042;
cm and dm solar bursts, SID and x-rays 0825; cm solar burst and
SID at 1110.

Solar: spot gone, radio int. 12 in R-8776; one sunspot continues
with radio int. 14 and 1 subflare in R-8778; small spot with
radio int. 14 and 1 subflare in R-8779; spot disappears in R-8781;
spot group continues with radio int. 16 and 3 subflares in R~8785;
small spot group with radio int. 8 and 2 subflares in R-8788;
radio int. 12 in R-8796; radio int. 15 and 7 subflares in R-8791.

() estimated from less than 24 hours data

- 102 -



Day 10 cm Sun- Geo-
Flux Spot mag.
$ No. Ap

Tono- CMP of
Index Region
Ip ia Number

Highlights

1967 June
21
(Cont'd)

22 126 83 5

23 129% 80 4

24 128 99 4

* adjusted for burst

0 0 R-8854(3)
(N26)

0 0 R-8858(3)
(822)

0 0 R-8860(3)
qn19)

SE limbs.

Geophysical: continued mostly magnetically quiet, 1 Kp 0+; iono-
spheric F region relatively quiet.

Events: minor: Ha (R-8867) 2240; dm solar bursts 1005-1915; m
solar bursts 0810-0900 and 1130-1255.

Solar: radio int. 6 with 2 subflares in R-8852; spot groups con-
tinue decrease with radio int. 13 in R-8854; radio int. 8 and 1
subflare in R-8858; small spot with radio int. 13 in R-8860;
spot group growing with radio int. 42 and 30 subflares in R-8863;
spot with radio int. 13 and 8 subflares in R-8867; mod. green
corona NE limb.

Geophysical: continued mostly magnetically quiet, 2 kp O+, though
some very slight activity 0600-1500; ionospheric F region re-
latively quiet; faint noctilucent bands N57 W02, 0010-0040 and
moderately bright bands and whirl N54-57.5, WO1.5-07.5, 2320-
0145.

Events:

Ho (R-8867) 0610 and 1347 with em, dm, m, and Dkm
3 Ho (R-8863) 0758 with Dim solar burst and 0903 with
m and Dkm solar burst; m and Dkm solar burst 0855; dm and m solar
burst 0735 with DSD, 0735-1600, and 1005; cm and dm solar burst
1130, 1840, and 2255; cm, dm, and m solar burst 1340, and 1450;
dm, m, and Dim solar burst 1200; SID at 1355, 1740 with dm solar
burst, and 1850; DSDs (R-8863) 1305-1625; SDF (N40 E40) 1655~
0625 (24 June).

Soler: radio int. 8 in R-8852; spot groups decreasing with radio
int. 11 and 2 subflares in R-8854; radio int. 6 in R-8858; small
spot with radio int, 10 and 1 subflare in R-8860; spot group con-
tinues with radio int. 30 and 12 subflares in R-8863; growing spot
group with radio int. 12 and 6 subflares in R-8867; mod. green
corona NE limb,

Geophysical: continued mostly magnetically quiet, 2 Kp 0+; iono-
spheric F region relatively quiet; very faint noctilucent bands
N55 WO2 at 2310.

Events: minor: Ha (R-8863) 0039 with cm, dm, and m solar burst,
mand Dim type II, and SID, 0305 with cm solar burst, 0452 with
om, dm, and m solar burst, 1034 with dm solar burst, and 1847 with
cm, dm, and m solar burat, Dkm type IV and SID; Ha (R-8867) 0725
with cm solar burst; Ha (R-8871) 2012; cm, dm, and m solar burst
0510 and 0550; cm solar burst 1055; Dkm type TV 0110; SDF (N38
E28) 0500-1550, ADF (N4O E25) 0600-1230 and (N36 E22) 1220-1330.

Solar: radio int. 8 in R-8852; two spot groups continue with radio
int. 13 and 7 subflares in R-8854; radio int, 8 with 1 subflare
in R-8858; small spot in R-8860; spot group, now classed By, con~
tinues with radio int. 28 and 19 subflares in R-8863; spot group
continues with radio int. 26 and 3 subflares in R-8867; spot at
E limb with radio int, 12 in R-8871.

Geophysical: continued mostly magnetically quiet, 1 Kp 0+; iono-
spheric F region relatively quiet; gradual cosmic ray decrease
begins very late in day; very faint noctilucent bands seen by
two aircraft N56 W38 at 0300.

Events: minor: Ho (R-8854) 0627, (R-8863) 0942 with m and Dim solar

- 118 -



1966 10 cm Sun- Geo-

Nov. Flux spot mag.
SS, No.

AP

CHP of
Region
Number

Highlights

12 129 126 «680

13° 129 126 68

14 127124 «466

15 125 123 66

16 124 121 52

17: «1146:1130«59

8

iL

R-8573
ql4)

Solar: no spot, radio int. 6, 21 cm radio noise and 1 subflare in
R-8571; spots continue, radio int. 17, 21 em radio noise and 2
subflares in R-8572; spot groups continue, radio int. 51, 21 cm
radio noise and 12 subflares in R-8573; radio int. 7 in R-8574;
br. green corona NE limb; minor events: Ha (R-8573) 2211.

Geophysical: very slight magnetic activity.

Solar: R-8571 over W limb; spots continue, radio int. 12, 21 em
radio noise and 3 subflares in R-8572; spot groups continue,
both By, radio int. 45, 21 om radio noise and 12 subflares in
R-8573; radio int. 7 in R-8574; br. green corona NE limb; minor
event: active dark filament (R-8573) 2015-0751.

Geophysical: continued very slight magnetic activity.

Solar: spots continue, radio int. 12, 21 cm radio noise and 2
subflares in R-8572; spot groups continue, radio int. 41, 21 cm
radio noise and 5 subflares in R-8573; radio int. 11 in R-8589;
radio int. 6 in R-8574; major events: Ha (R-8578) impt. 2n
1215-1341 with cm. and m. solar bursts; minor events: Hy
(R-8573) 2038 with active dark filament; m. solar bursts 0925
and 1120; active prominence region (R-8580) 1340-2350; dark
surge (R-8573) 1934.

Geophysical: magnetically extremely quiet, 4 KpOo; SID at 1222;
ionospheric F region relatively quiet.

Solar: spots continue, no radio int. available, 21 em radio
noise and 1 subflare in R-8572; spot groups continue, no radio
int. available, 21 cm radio noise and 14 subflares in R-8573;
spot group appears, 2 subflares in R-8578; br. green corona
NE limb; minor events: Hy (R-8573) 0932 with cm. and m. solar
bursts; active dark filements (R-8573) 0218-0755D and 1642-
2042.

Geophysical: magnetically quiet, 2 KpO+; SID at 0022 and 1932.

Solar: spots continue, sizes slightly decreasing, radio int. 8
and 1 subflare in R-8572; spot groups continue, radio int. 42,
21 cm radio noise and 10 subflares in R-8573; spot group con-
tinues, radio int. 15 and 2 subflares in R-8578; radio int. 14
and 1 subflare in R-8584; radio int. 6 in R-8574; minor event:
active prominence region (R-8584) 0922E-1159D.

Geophysical: very slight magnetic activity until 1200, quiet
thereafter, 1 KpO+; homogeneous auroral are overhead at ¢ = 57°
over U.S.S.R. 1500-1800.

Solar: R-8572 over W Limb; spot groups continue, radio int. 35,
21 cm radio noise and 11 subflares in R-8573; spot group con-
tinues, sizes decreasing, radio int. 11 and 4 subflares in
R-8578; spot group appears, radio int. 17 and 9 subflares in
R-8584; radio int. 16 and 21 cm radio noise in R-8586; radio
int. 7 in R-8574; minor events: Ha (R-8584) 2314; active dark
filaments (R-8573) 0130-0330D and (R-8583) 0508-0745.

Geophysical: slight magnetic activity 0000-0900 and 1500-2100
with preliminary sudden commencements at 0016 and 1720, quiet
after 2100; SID at 0013 and 0133; cosmic ray decrease; homo-
geneous auroral band overhead at ¢ = 56° over U.S.S.R, 1800-
1900, weak homogeneous arc overhead in ¢ = 67-68° over Western
Europe with horizon glow visible to ¢ = 58°.

-~65-



1966 10 cm Sun- Geo-
Dec. Flux spot mag.
SS, No. Ap

OMP of
Region
Number

Highlights

14 154 150 113 48

15 150 145 107 18

16 140 135 116 8

17, :129%125* 88 9

* adjusted for burst

(R-8613)
(wis)

(R-8616)
(nis)

Solar: spot group continues with radio int. 11 in R-8606; one
spot group continues with radio int. 11 in R-8607; spot group
with size decreasing, radio int. 32, 21 cm radio noise and 10
subflares in R-8609; spot continues, radio int. 20, 21 cm radio
noise and 4 subflares in R-8610; spot groups continue, radio
int. 34, 21 em radio noise and 1 subflare in R-8612; By spot
group appears with radio int. 6 in R-8613; minor events: Ha
(R-8609) 1742; em. and m. solar bursts 0945-1240.

Geophysical: slight-to-moderate magnetic activity until 1200,
moderately severe storm 1200-1800, 1 Kp70, moderate storm
thereafter; short rayed auroral arc overhead at ¢ = 52° over
U.S.S.R. 1600-1900, medium rayed are at $ = 55° 1600-2000,
short rays at ¢ = 55° 2100-2300; homogeneous arc over Western
Europe sometimes overhead at § = 63° and rayed band north of
are visible as horizon glow to ¢ = 55°; ionospheric F region
very disturbed with some auroral absorption at high latitudes.

Solar: spot group continues with radio int. 10 and 1 subflare
in R-8606; spot group continues with radio int. 12 in R-8607;
spot group continues, radio int. 25, 21 cm radio noise and
3 subflares in R-8609; spot group continues, radio int. 19,
21 cm radio noise and 3 subflares in R-8610; spot group con-
tinues, radio int. 38, 21 cm radio noise and 5 subflares in
R-8612; spot group no longer By continues with radio int. 6
and 1 subflare in R-8613; br. green corona on NE limb, moder-
ate green corona on NW limb; minor events: Ha (R-8612) 0522
with active dark filament and 1945 both with cm. solar burst.

Geophysical: continued moderate magnetic storm 0000-0300,
slight-to-moderate activity thereafter; SID at 0524; homo-
geneous auroral band overhead at $ = 56° over U.S.S.R. 1400-
1800 and 2100, rays at ¢ = 53° 1700 and ¢ = 54° 2300, rayed
band at ¢ = 53° 1800; ionospheric F region disturbed with
some auroral absorption at high latitudes.

Solar: spot group continues over W limb with radio int. 8 in
R-8606; spot group continues over W limb with radio int. 10
in R-8607; spot group continues, radio int. 15, 21 cm radio
noise and 4 subflares in R-8609; spot group decreasing, radio
int, 17 and 21 cm radio noise in R-8610; spot group continues,
radio int. 36, 21 cm radio noise and 8 subflares in R-8612;
spot group continues with radio int. 6 in R-8613; br. green
corona on NW limb, moderate green corona on SW limb, moderate
green corona on NE limb; minor events: cm. solar burst 1115.

Geophysical; very slight magnetic activity.

R-8612 (364) Solar: spot group continues with radio int. 13 and 21 cm radio

(N21)

noise in R-8609 at W limb; spot group continues, radio int. 19
and 21 cm radio noise in R-8610; spot group continues, radio
int. 28, 21 cm radio noise and 13 subflares in R-8612; spot
group continues with radio int. 6 in R-8613; spot group appears
in R-8616; major events: Ha (R-8612) impt. 2b 0949-1124 with
cm. solar burst; minor events: Ho (R-8612) 0811 and 1227, both
with em. solar burst, (R-8609) 1405 with br. surge.

Geophysical: very slight magnetic activity until 2100, slight~
to-moderate activity thereafter; SID at 0814, 0953 and 1230;
cosmic ray recovery at Deep River remaining approx. 2% lower
than before decrease; striated auroral band overhead at ¢ = 58°
over U,S,S.R, 1600-1700.

-71-



1966 10 cm Sun- Geo- CMP of Highlights
Mar. Flux spot mag. Region
S$ Sa No. Ap Number

20 112 111 54 10 Solar: spot group still By, radio int. 59, 21 cm radio
noise and 12 subflares in R-8207; small spot reappears,
radio int. 12 and 2 subflares in R-8204; radio int. 12 in
R-8213; radio int. 8 in R-8212; principal event: Ha
(R-8207) impt. 3b, 0924-1255) with cm. and m. solar
bursts; dark surge (R-8207) 0955; active, dark filament
(R-8207) impt. 3, 0958; minor events: Ha (R-8207) 0226,
0806, 1756, 1847, and 1959; (R-8193) 1206 and 1235E; cm.
solar bursts 0220, 0605, 1755, 1850, and 2310; m. solar
burst 1355 and 2310; dark surges (R-8207) 0905, 1816;
sudden disappearance of filament (R-8207) 1852; br. surges
(R-8204) 1900 and 2006; active dark filament (R-8207) 2235.

Geophysical: continued moderate magnetic disturbance 0000-
0300, quiet thereafter; S-SWF, SGNA and SPA at 0223;
S-SWF, SEA, SCNA and SES at 0955, SFD's at 1537, 1604 and
1730; S-SWF, SCNA, SEA, SPA and SES at 1802; SPA and SFD
at 1842; SL-SWF, SPA and SFD at 2000; ionospheric F region
slightly disturbed.

21 121120 49 8 Solar: spot group but decreasing in size, radio int. 71,
21 cm radio noise, and 12 subflares in R-8207; spot gone,
radio int. 10 and 2 subflares in R-8204; radio int. 12 in
R-8213; small spot appears, radio int, 9 and a subflare in
R-8216; 2 subflares in R-8217; major events: Ha (R-8207)
impt. 2b, 0924-1130 and 2126-0013 with cm. and m. solar
bursts; eruptive prominence, impt. 4, (R-8207) 2215-2330;
dark surges (R-8207) 0926, 2145, 2200, and 2230; active
dark filaments (R-8207) 0930, 2202 and 2224; sudden dis-
appearance of filament (R-8207) 2255; br. surge (R-8207)
2216; minor events: Ha (R-8207) 0101, 1416U, 1503, 1541,
and 1819; cm. solar bursts 0120, 0920, 1010, 1410, 1505,
1545, 1605, and 1820; m. solar bursts 0920, 1410 and 1605;
type IZ, 21-41 Mz, 2209-2214 and 2217-2226; active dark
filament (R-8207) 0007, 0314 and 0557; active prominence
xegion (R-8204) 0200; dark surge (R-8207) 2036.

Geophysical: slight magnetic disturbance 0000-0600 and
again at 2100-2400; S-SWF and SPA at 0110, SL-SWF, SES and
SEA at 0932, SFD's at 1616 and 2022D; SL-SWF, SPA and SED
at 1505; SL-SWF at 1543; S-SWF, SEA, SES and SFD at 1822;
SCNA and SFD at 2200; SL-SWF, SCNA, SEA, SFD and SPA at
2217; SL-SWF at 2345.

22 106 105 52 7 —-R-8207(2) Solar: spot continues decrease, radio int. 50, 21 cm radio
«nl9) noise, and 10 subflares in R-8207; radio int. 8 in R-8213;
spot gone but radio int. 7 in R-8216; major events: By
(R-8207) impt. 2n, 1110-1225 with cm. and m. solar bursts}
minor events: Ha (R-8207) 0450, 0743 and 1407E; cm. solar
bursts 0310, 0330, 0450, 0750, 1405, 1805; m. solar bursts
0750, 1020, 1255, 1405, 1805, and 2310; dark surge (R-8207)
0322.
Geophysical: continued slight magnetic disturbance 0000-

0300 and again 2100-2400; SEA and SES at 0940; SFD at 1406;
G-SWF, SES, SPA, SEA, and SGNA at 1930; SPA at 2255.



bec. 12, 1967 00 uTdl 02.03. Stet

FLARES

2/08 (cont'd)

m € nolve store,

Bursts

Bp Ko. z Ey Fr i = = z 2 Te
6 Tse 2}I0
Ci) [ i tA ie t 16 a EA

144 10 cm Flux one of ten pagnetically quiet days; tonospheric F region relatively quict.
135 Re

CHP 9110 s20(261) 18598 S17 (ap)3
(16594) N15 up

16592 $24 (ap)?

26597 8OB (ap)

16604 $19 (up)?

pee. 13, 1967 00 urd 02 03S GT tga ak

FLARES
= tn/or adnan — 16/15 —— 08
om n L tt i i n n

Bursts
3

(J 6 (J @ 15 18 fj
148 10 em flux ‘one of five magnetically quiet days; Lonospheric F region relatively quiet; br. green corona 7 days earlier
137 Re on NE Linb.
GiP (9116) 832 (26606) $33 ap

SLL N12¢2)

9112 H26(6)
(16608) 518 8f

dec. 14, 1967 00 ur Ol 2S tak

FLARES ie
= In/is ———— hs —— 19/08

Bursts

Bp [Ko is is is i in a co r alte
Af se [2 }to

0 B & fo 2 5 if a a

155 10 a flux One of five magnetically quiet day; fonospherte F region relatively quie

140 Re

cap 9113 N23 16608 N26 6

bec. 25, 1967 OO TO BONO atta

FLARES 1n/oe

om 11
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m. i i
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SD i
X-Foys
Fp ko = = ee iz iz ie rs i alin
jo [se B 0235039), FB issa(s) jo }t0
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170 10 ca flux Coonte ray decrease of about 4X in late hours of day, Intensity stays at low level until recovery on Dec. 23.
BL Re
car (B19) sai
91146 MLO 16625 mar (6E)2
16612 S16 Cap)

Bursts

pec. 16, 1967 Our Ol 02 03 FSG Ste

FLARES
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187 10 om flux Seall proton increase shows on >10, 30 and 60 NeV counts
60 Re

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CHP 9127 $18 1651 524 (Bp)
15600 K09 (aps
16602 N20 (Bp)3 160
18614 n20 (ap)2



Day 10 cm Sun— Geo- Iono- CMP of Highlights
Flux spot mag. Index Region
S__No. Ap Ip Ia_Number
1967 April
07 126k 79 8 (0) 3 Solar: spot over W limb in R-8751; small spot continues with radio int.
11 in R-8752; spot group growing with radio int. 10 and 2 subflares in
R-8758; spot group growing with radio int. 32 and il subflares in
R-8753; spot continues decreasing in R-8761; spot appears with radio
int. 14 and 3 subflares in R-8760; small spot appears in R-8764; no
spot, radio int. 9 in R-8754; mod. green corona SE limb.
Geophysical: slight magnetic activity continues to 0900 and occurs
again 1500-2100 otherwise quiet.
Events: minor: Ha (R-8752) 1149 with m solar burst; cm and dm solar
burst at 1840; Dkm type II at 1900; APR (R-8754) 0930-1200.

08135 104 5 0 0 R-8757 Solar: radio int. 12 in R-8752; spot group continues with radio int.

qo) 10 in R-8758; spot group continues to grow with radio int. 44 and 16
R-8764(2)  subflares in R-8753; spot disappears in R-8761; spot group continues
«qn29) with radio int. 14 in R-8760; 1 subflare in small spot in R-8764;
R-8758 spot at E limb with radio int. 10 in R-8767; no spot, radio int. 8
(S25) in R-8754.

Geophysical: some slight magnetic activity 0000-0900, quiet there-
after; ionospheric F region relatively quiet.

Events: minor: Ha (R-8753) 1009 with cm solar burst; EPL (N45 W limb)
1000; dm and cm solar burst 2050; APR (N25 W150) 0930-1210; ADF
(R-8753) 2130-0655.

09133 67 «=95 0 0 R-8760(2) Solar: radio int. 12 in R-8752 at W limb; spot size decreasing with
(24) radio int. 8 in R-8758; spot group continues with radio int. 44 and
15 subflares in R-8753; spot group continues with radio int. 14 and
4 subflares in R-8760; spot disappears in R-8764; spot continues
with radio int, 8 and 1 subflare in R-8767; no spot, radio int. 8 in
R-8754; mod. green corona SE limb.

Geophysical: some slight magnetic activity 0000-0300, mostly quiet
thereafter with 1 Kp0o and 1 Kp0+; ionospheric F region relatively
quiet.

Events: major: Ho (R-8753) impt. 2n, 1345-1450; minor: Ha (R-8753)
0917; Ha (R-8760) 1317; dm and cm solar burst 0145 with SID; 1755
with SID and 2035 with SID; m and cm solar burst 1205; ADF (R-8760)
0520; APRs (R-8754), (R-8758), (S05 E30), and (S40 W45) 0840-1040;
em rise and fall 2155-0140.

10130 62 5 0 O R-8761 Solar: spot still decreasing with radio int. 7 in R-8758; growing
(N09) spot group with radio int. 45 and 12 subflares in R-8753; spot group
continues with radio int. 24 and 8 subflares in R-8760; spot conti-
nues with radio int. 6 in R-8767; mod. green corona NE limb; br.
green corona NW limb.
Geophysical: some very slight magnetic activity but mostly quiet;
aurora overhead at $ = 59° over North America 0600-1100.
Events: minor: Ha (R-8753) 0712 with m and cm solar burst and 1031;
Ho (R-8760) 2121 with cm solar burst; cm and dm solar burst with
SID 0310; cm solar burst with SID 0940, 1505, and 1540; m noise
storm 0630-1500; ADF (N15 E30) 0355; APR (S15 W30) 1130.

11131" 62 4 0 0 R-8766(2) Solar: small spot with 1 subflare in R-8758; spot group growing with
(N20) radio int. 30 and 10 subflares in R-8753; spot group growing with :
radio int. 28 and 7 subflares in R-8760; spot continues with radio !
int, 8 in R-8767; br. green corona NE and NW limbs; mod. green
corona SW limb.

* adjusted for burst
() estimated from less than 24 hours data



1966 10 cm

Highlights

Apr. Flux

S Sa
8 107 107
9 100 100
10 94 «95
lL 94 94
BR 9% 95

Solar: spot continues, 21 cm radio noise and §$ subflares in

R-8223; spot gone, radio int. 19 and 4 subflares in R-8238;
BY spot growing, radio int. 36, 21 cm radio noise, and 10
subflares in R-8240; small spot. in R-8248; radio int. 9 in
R-8252; radio int. 9 and 1 subflare in R-8254; 1 subflare
in R-8251; major events: Ha (R-8238) impt. 2n, 0905E-0928D
with cm, solar burst; br. surge (R-8238) 0912; minor
events: Ha (R-8223) 0735E; (R-8238) 1433E; m. solar noise
storm.

Geophysical: mostly magnetically quiet, slight disturbance

0000-0600 and 2100-2400; SL-SWF, SPA, SES, and SED at
1622; S-SWF, SCNA, SPA, and SED at 1811; SPA and SED at
1921; SPA at 2242; ionospheric absorption at Great Whale
River continues until 1110.

Solar: spot smaller, 21 cm radio noise and 1 subflare in

R-8223; By spot stable, radio int. 29, 21 cm radio noise,
and 9 subflares in R-8240; spot smaller in R-8248; radio
int. 8 in R-8252 and R-8254; minor events: Ha (R-8240)
0020 and 0831K, (R-8223) 1007E; br. surges (R-8223) 1342
and 2112;' sudden disappearance of filament (R-8240) 0034-
0153; cm. solar burst 0020.

Geophysical: magnetically quiet; SL-SWF, SPA and SED at

0025; SED at 1658E.

Solar: spot gone, 2 subflares in R-8223 at W limb; By spot

stable, radio int. 26, 21 cm radio noise, and 5 subflares
in R-8240; radio int. 7 in R-8252, R-8254 and R-8262;

1 subflare in R-8259; minor events: Ha (R-8240) 23116 and
234783 cm. solar bursts 1210, 1250, 1520, 1550, and 2340;
m. solar bursts 1250, 1350 and 1520,

Geophysical: continued magnetically quiet except for slight

disturbance 1800-2100; SL-SWF, SPA, SES and SFD at 1222;
SFD at 1452; S-SWF, SPA and SES at 1545; S-SWF, SCNA and
SPA at 2341; ionospheric ¥ region relatively quiet.

Solex: spot stable, radio int. 24, 21 cm radio noise and

15 subflares in R-8240; radio int. 6 in R-82543 moderate
green corona and radio int. 14 in R-8262; minor events:
He (R-8240) O117, 0605, 0948E, and 1225; cm. solar bursts
0120, 0340 and 1255; m. solar noise storm.

Geophysical: magnetically extremely quiet, 7Kp0o0+; S-SW,

SCNA and SPA at 0116; S-SWF and SEA at 0658; SPA at 0840;
SCNA, SPA and SES at 1000; SPA and SES at 1100; G-SWF,
SCNA, SEA, SPA, and SES at 1233; SFD's at 1436D, 1951 and
2008; SPA at 1815; G-SWF and SPA at 2340.

Solar: spot at W limb; radio int. 20, 21 cm radio noise and

18 subflares in R-8240; radio int. 8 and 21 cm radio noise
in R-8254; 2 subflares in R-8253; spot, radio int. 24,

21 cm radio noise and 4 subflares in R-8262; minor events:
For (R-8240) 0411, 0652 and 1717, (R-8262) 1546K; br. surge
Limb (R-8262) 1531 and 1721; br. surge (R-8240) 1538; dark
surge (R-8253) 1721; cm. solar bursts 1625 and 1715;

type II, 22-41 MAz, 1537-1552 followed by type IV 1552-
1900.

Geophysical: continued magnetically quiet; SPA's at 0346

and 2341; SCNA at 1004; SL-SWF, SPA, SES and SFD at 1625;
S-SWF, SCNA, SEA, SPA, SES, and SFD at 1710; ionospheric
F region relatively quiet.

-21-



CMP of
Region
Number

Highlights

1966 10 cm
Sep. Flux

S_ Se

1 116 117

2 104 106

3 102 103

4 100 102

Sun- Geo~
spot mag.
No. Ap
440 22
44°15
25° 92
18 112

R-8473
(823)

Solar: 5 spot size increases, radio int. 53, 21 cm radio
noise and 25 subflares in R-8461; no spot, radio int. 6,

21 cm radio nvise and 1 subflare in R-8473; no spot, radio
int. 21 in R-8459; minor events: HY (R-8461) 1052 with em.
and m. solar bursts and 1520; m. noise storm 1000-1500; cm.
solar bursts 0030-0220; cm. and m. solar bursts 0630-0855
and 1015-1135 and 1150 and 1245; m. and dm. solar bursts
1405-1410; m. solar bursts 1830-1905.

Geophysical: moderate magnetic activity continues; SCNA at
0159; ionospheric absorption on 30 MHz at Great Whale River
begins and continues to Sept. 6; ionospheric F region
slightly disturbed; at 1800 auroral medium rayed arc over-
head at é = 58°, at 2100 short rays at ¢ = 58° over U.S.S.R.

Solar: spot increases, radio int. 7, 21 cm radio noise and
14 subflares in R-8461; no spot, radio int. 11, 21 cm radio
noise and 1 subflare in R-8460; no spot, 21 cm radio noise
in R-8484; no spot, radio int. 20 in R-8459; principal
event: HY (R-8461) impt. 3b, 0542-0956 with cm. and m.
solar bursts; dark surge and active filament region; minor
events: Hy (R-8460) 06028.

Geophysical: slight-to-moderate magnetic activity continues
with a sudden commencement at 0823; SPA at 0007; S-SWF and
SPA at 0206 and 0354; SL-SWF, SCNA, SEA, SPA and SES at
0535; G-SWF, SCNA, SEA and SES at 0825; some auroral and
polar blackout, PCA starts about 0600 as shown by f min
at high latitudes.

Solar: spot increases, radio int. 9, 21 cm radio noise and
11 subflares in R-8461; no spot, radio int. 8, 21 em radio
noise and 1 subflare in R-8467; 21 cm radio noise in R-8484;
br. green corona at NW limb; minor events: em. and m.
solar bursts 1005-1055 and m. and dm. solar bursts 1335-
1400; dark surge (R-8461) O501E; br. surge (R-8461) 2345.

Geophysical: moderate magnetic activity becomes a severe
storm after 0900 with 2100-2400 Kp 9~; SCNA at 0917; SES
at 1543; ionospheric F region very disturbed with consider-
able auroral and polar blackout, PCA continues; at 1000-
1100 short rayed arc overhead at # = 61°, at 1200 at ¢ = 60°
and at 1300-1600 ¢ = 57° over U.S.S.R.

Solar: spot decreases in size, radio int. 26, and 6 subflares
in R-8461; small spot appears, radio int. 7 and 3 subflares
in R-8467; spot, radio int. 6, 21 cm radio noise in R-8484;
br. green corona at NW limb; major event: Hx (R-8461) impt.
2n, 0405-0519 with cm. and m. solar bursts and br. surge;
minor events: Hy (R-8461) 0600 and 0935E with cm. and dm.
solar bursts, br. surge and active prominence region} Hy
(R-8467) 2149 with cm. solar burst; cm., m. and dm, solar burst
0410-0920 and 1130-1250; type II, 20-41 MHz, 1452-1528; br.
surge (R-8461) 1048E; active prominence region (R-8491) 1750.

Geophysical: severe magnetic storm continues with 0000-0600
Kp 9- 84, but becomes slight activity by end of day; G-SWF
and SPA at 0045; S-SWF and SPA at 0212; S-SWF, SCNA, SEA,
SPA and SES at 0410; SPA at 2142; ionospheric F region very
disturbed with considerable auroral and polar blackout, PCA
continues; at 1200-1300 homogeneous auroral arc overhead at
6 = 61°, at 1400-1500 br. homogeneous band at $ = 58, at
1800-2000 short rayed band at # = 60°, at 2100 short rayed
band at ¢ = 59° and at 2300 medium length rays at ¢ = 57°
over U.S.S.R.; aurora at ¢ = 53° over North America 0000-
0500; aurora at $ = 57° over North America 0600-1100; great
display of aurora over Western Europe, accompanied by vigor-
ous flaming visible from 2100 (Sept. 3) to dawn down to
latitudes lower than 6 = 50°.

- 50 -



Day 10 cm Sun- Geo- Iono- CMP of Highlights
Flux spot mag. Index Region
S$ No. Ap Ip Ia_ Number
1967 March
25170 131 4 0 0 Solar: spot groups continue with radio int. 18 and 6 subflares in
R-8733; spot groups increase, one again BY, with radio int. 70 and
13 subflares in R-8740; spot group, now BY, continues with radio
int. 23 and 2 subflares in R-8741; spot group on W limb with radio
int. 22 and 2 subflares in R-8745; br. green corona NE limb; mod.
green corona SE and NW limbs.
Geophysical: continued magnetically quiet; ionospheric F region
relatively quiet.
Events: minor: Ho (R-8745) 1030 with cm solar burst, (R-8740) with
cm solar burst, 1932 with dm and cm solar burst, 2151 with dm and
em solar burst; ADFs (R-8738) 0000, 0240, 0540, (R-8740) 0000, 0240,
0540, 2100-0110; DSD (R-3740) 1140; EPL (R-8745) 1200-1740; SID at
2352 with m, dm and cm solar burst.

26 165* 137 4 0 0 R-8739 Solar: no obs. of magnetic classification of sunspot at Mt. Wilson;
(823) spot groups continue with radio int. 28 and 4 subflares in R-8733;
spot groups continue with radio int. 60 and 15 subflares in R-8740;
spot group growing with radio int. 26 and 1 subflare in R-8741;
spot group continues with radio int. 10 and 2 subflares in R-8745;
br. green corona NE and NW limbs; mod. green corona SE and SW limbs.
Geophysical: continued magnetically quiet, some very slight activity
after 1200.
Events: principal: Ho (R-8740) impt. 3n 1630-1759 with SID, DSD, BSD
and dm and cm solar burst; minor: Ho (R-8740) 0253, 0458 with SID,
DSD and dm and cm solar burst, 1448 with SID and Dkm, m, dm and cm
solar burst, 1603 with SID and dm and cm solar burst, 2156 with m,
dm and cm solar burst, (R-8733) 0656 with ADF, Dkm, dm and cm solar
burst, 1831 with dm and cm solar burst; ADFs (R-8733) 0145, 0455,
2230-0240, (R-8738) 2045-0510, (R-8740) 0200-0530, 2045-0510; APR
(R-8745) 0550-1020.

27 164* 122 18 © 3 R-8740(3) Solar: spot groups begin passage over W limb with radio int. 27 and
(N22) 12 subflares in R-8733; By spot groups continue with radio int. 52
and 14 subflares in R-8740; spot group decreasing with radio int.
26 and 1 subflare in R-8741; spot group, now By, continues with
radio int. 18 and 4 subflares in R-8745; spot group appears on
disk with radio int. 8 and 2 subflares in R-8739; br. green corona
NE limb.

Geophysical: slight-to-moderate magnetic activity; aurora overhead
in U.S.S.R. to $ = 58° 1600-1700; ionospheric F region very
disturbed.

Events: minor: Ho (R-8740) 1444 with dm and cm solar burst, 1557
with SID and m, dm and cm golar burst, 2043 with cm solar burst,
2106 with SID, DSD, solar x-rays and m, dm and cm solar burst and
Dkm and m type II; DSD (R-8740) 0445, 1250 with dm and cm solar
burst, 1712 with m, dm and cm solar burst and Dkm type II; ADF
(R-8740) 1315-2300; BSL (R-8733) 1350, 1950; m solar noise storm.

28181 120 8 0 2 Solar: spot groups continue over W limb with radio int. 24 and 3
subflares in R-8733; spot groups continue with radio int. 70 and
18 subflares in R-8740; spot group decreasing with radio int. 22
in R-8741; By spot group continues with 2 subflares in R-8745;
Spot group growing with radio int. 28 and 9 subflares in R-8739;
radio int. 16 and 1 subflare in R-8751; 1 subflare in R-8752.

Geophysical: some slight magnetic activity 0600-1500, subsiding to

quiet; ionospheric F region very disturbed.

* adjusted for burst

=~ 95 -



1966 10 cm

Sun- Geo- CMP of
spot mag. Region
No. Ap Number

Highlights

June Flux
S Sa
13° 93 96
14 94 97
15 92 95
16 95 98
17-96 100
18 95 98

34 5 — R+8336(5)
(24)

31 4
22 6
40 6

46 4 —-R+8338(2)
(822)
R-8340
(N17)

39 3 R-8341
(824)

Solar: spot gone but radio int. 13 and 2 subflares in
R-8332; By spot, size decreasing, radio int. 35, 21 cm
radio noise and 8 subflares in R-8336; radio int. 7 and
1 subflare in R-8334; radio int. 12, 21 cm radio noise
and 1 subflare in R-8338; major event: Hy (R-8336)
impt. 2n, 0512E-0855D with cm, and m. solar bursts; minor
events: Hy (R-8336) 0044 and 0237 both with cm. solar
burst, (R-8332) 1830; cm. solar bursts 0015, 0210, 0345 and
0435; dark surge (R-8336) 0348; br. surge (R-8332) 1807.

Geophysical: continued magnetically quiet; SPA's at 0010,
0102 and 0658; S-SWF and SPA at 0257; SCNA's at 1849 and
1913.

Solar: radio int. 14 and 2 subflares in R-8332; BY spot,
radio int. 27, 21 cm radio noise and 6 subflares in
R-8336; small spot and 1 subflare in R-8334; radio int, 12
and 21 om radio noise in R-8338; minor events: HY
(R-8336) 1050; cm. solar bursts 0505 and 0640; m. solar
noise storm.

Geophysical: continued magnetically quiet; ionospheric
F region relatively quiet.

Solar: radio int. 14 in R-8332 at W limb; spot no longer
By and size decreasing, radio int. 20, 21 om radio noise
and 4 subflares in R-8336; small spot and 6 subflares in
R-8334; radio int. 12 and 21 em radio noise in R-8338;
By spot in R-8340 born on disk.

Geophysical: continued magnetically quiet except slight
disturbance 1800-2400.

Solar: spot size decreasing, radio int. 19, 21 cm radio
noise and 1 eubflare in R-8336; spot gone and 3 subfleres
in R-8334. near W limb; radio int. 10, 21 cm radio noise
and 1 subflare in R-8338; spot no longer By, radio int. 22
and 2 subflares in R-8340; small spot in R-8341; spot,
radio int. 9 and 1 subflare and moderate green corona in
R-8344 at E limb.

Geophysical: light magnetic disturbance 0000-0300, quiet
thereafter.

Solar: spot continues to decrease in size, radio int. 13
and 21 cm radio noise in R-8336; radio int. 10, 21 cm
radio noise and 1 subflare in R-8338; spot growing, radio
int. 28 and 6 subflares in R-8340; small spot in R-8341;
spot continues, radio int. 12, 21 cm radio noise, moderate
green corona and 1 subflare in R-8344; minor events:

m, solar noise storm, active dark filament (R-8340) 2121
and 2203.

Geophysical: continued magnetically quiet; weak display
noctilucent clouds over Western Europe in latitudes
53°-56° from 0025-0200.

Solar: spot gone, no radio int. report at 9.1 cm, 21 cm
radio noise in R-8336; radio int. 10 and 21 cm radio
noise in R-8338; spot again By and 4 subflares in R-8340;
small spot continues, 21 em radio noise and 1 subflare in
R-8344; minor event Hy (R-8336) 0700 with cm. solar
burst; m. solar noise storm; type II, <25~100 MHz, 1604.2~
1609; eruptive prominence (N39 W limb) 1303; active dark
filament (R-8340) 0000.

Geophysical: continued magnetically very quiet 0600-1800
Kp0+.

- 33 -



"Quarterly Bulletin on Solar Activity", International Astronomical
Union, Eidgen. Sternwarte, Zttrich, Switzerland. Quarterly.

No. 158 for April-June 1967, received WDC-A September 1968.

Sunspots, solar flares, active solar regions, coronal
intensities, coronal isophotes, solar radio emission.

"SPARMO Bulletin", Solar Particles and Radiations Monitoring
Organization, Secretariat du SPARMO, 2 Rue des Vertugadins-92,
Meudon, France. Four issues per year.

Vol. II, No. 3 and 4, data for 1967, received WDC-A
August 1968.

Cosmic ray balloon data.

Yearly

1,

"Heliographic Maps of the Photosphere", M. Waldmeier, Publikationen
der Eidgenossischen Sternwarte, Zurich, Switzerland. Yearly.

Band XIII Heft 1, data for 1966, published 1967.

Evolution of sunspot groups by solar rotation.

"Photoheliographic Results in Year", Royal Observatory Bulletin,
R.v.d. R. Woolley, Astronomer Royal, Royal Greenwich Observatory,
Herstmonceux Castle, Hailsham, Sussex, England.

Data for 1960 published in 1967.

Daily positions and areas of sunspots, general catalogue
of groups of sunspots, sunspots seen on one day only,
daily total areas of sunspots and faculae, mean areas
and heliographic latitude of sunspots by rotation.

"Cartes Synoptiques de la Ghromosphere Solaire et Catalogues
des Filaments et des Centres d'Activité", edited M. J. Martres,
Section d'Astrophysique Observatorie de Paris, 92 Meudon, France.

Normally yearly.

Vol. IV, Fascicule IV, data for years 1964-1965,
published 1966.

Filaments and active centers by solar rotation.

"Geomagnetic Indices K and C" (IAGA Bulletin No. 12 series), IUGG
Publications Office, 39 ter, Rue Gay-Lussac, Paris (V) France. Yearly.

No. 12 sl, data for 1964, issued in 1967.

Magnetograms and Hourly Values (U. S. - operated stations)
U. S. Department of Commerce, Coast and Geodetic
Survey, Washington, D. C. Yearly.

- 168 -



Asguat 16, 196700 or Ol 02 03d

FLARES

min/s
n

Ze

Ato

te

ie

0
130 10 cm flux
77 Re
GMP Region 2935 $18(5)
Region 8961 N12
Region 8936 130(5)
16665 110(88)2

2 8

‘August 17, 196790 ur OL

FLARES.
=ini26

wis:

on
dem

Bursts

oy

Okm

S10)
X-Rays

22.

en

Tip
lo

36 os

Ap [Kp
5 ie

a

19 [se

145 10 cm flux
95 Re
AP Region 8937 $26(5)

2 8

Auguat 18, 196700 UT OL

FLARES

ke rafer~ 10/42

om 1 L
it 1

‘dim

TM
km

Bursts

S10,
2

XROys
cs

ot
T}io

Bp [_Kp

ue [se
i $ i

8 6 8

153 10 en flux
Me Re tonospherte F region disturbed.
GIP Region 8938 N21C4)

One of the five most augenticolly disturbed da;

CAE Se Oe

Avguat 19, 196700 ur O)

FLARES.
}—2n/02 20/42 — 242
L

2s,

ny

a

8 [J

168 10 cw flux
110 Re Tonoapheric F cegion slightly disturbed,

O4P Region 8939 ¥36(5)
30 ap

16663 8:

- 133 -



1966 10 cm Sun- Geo- CMP of Highlights
Mar. Flux spot mag. Region
S Sa No. Ap Number

23° 97 96 40 67 Solar: spot continues to decrease, radio int. 44, 21 cm
radio noise and 16 subflares in R-8207; radio int. 9 in
R-8213; radio int. 7 in R-8216; minor events: Ha (R-8207)
1907 and 2040; cm. solar bursts 0320, 0750, 1145, 1340,
1445, and 2320; m. solar bursts 0750, 0900, 1145, 1340, and
2320.

Geophysical: magnetically disturbed with a preliminary
sudden commencement at 1133 and severe disturbance 0600-
2100 Kp 507-7-6070; SPA's at 1925 and 2255; a marked
cosmic ray decrease begins about 1400; ionospheric
F region very disturbed, with some auroral absorption at
high latitudes; ionospheric absorption on 30 MHz at Great
Whale River 0218-1740; auroral rays overhead at $= 53° in
U.S.S.R, at 1000, homogeneous arc at ¢ = 53° at 1300, rays
at $= 53° from 1500-2100, homogeneous rays at $= 53° at
1800 and bright rays at ¢ = 51° from 1900-2000 in U.S.S.R.;
aurora overhead in North America at $= 60° from 1200-1700;
homogeneous arc or band, overhead $ = 64° from 2000-2200 in
Western Europe, visible to ¢ = 57°, slowly retreated north-
wards.

24 94 93 31 2 Solar; spot continues to decrease, radio int. 44, 21 cm
radio noise and 14 subflares in R-8207; radio int. 9 in
R-8213; radio int. 7 at S15 E75; major events: Ha
(R-8207) impt. 2b, 0225-0414 with cm. solar bursts, dark
surge (R-8207) 0232E; minor events: Ho (R-8207) 0910 and
1733; cm. solar bursts 0040, 0145, 0315, 1020, 1910, 1950,
and 2305; m. solar bursts 1020, 1300 and 1910; dark surge
(R-8207) 0800E.

Geophysical: geomagnetically quiet with five Kp0o and 0+
0600-2100; S-SWF, SCNA, SEA, SPA and SES at 0225; SPA‘'s at
1125 and 1915; SFD's at 1649, 1749, 1810, 1955, and 2136;
G-SWF, SPA. and SES at 2033; cosmic ray decrease continues;
fonospheric F region disturbed; bright auroral rayed band
overhead at ¢ = 56° from 1100-1400 and rays at ¢ = 56° at
1500 and homogeneous arc at ¢ = 56° from 1600-1800 in

U.S.S.R.
25° 92 91 23 14 (R-8220) Solar; spot group continues decreasing in size, radio
(N22) int. 36, 21 cm radio noise, and 16 subflares in R-8207;

radio int. 7 at S15 R60; small spot appears in R-8218;
principal event: Ha (R-8207) impt. 3n, 0143-0444 with
cm. and m, solar bursts; active dark filament (R-8207)
0154; dark surge (R-8207) 0216E; br. surge (R-8207) 02265
major events: Ha (R-8207) impt. 2b, 0500-0557D and 1514-
1558 with cm. solar bursts, dark surge (R-8207) 0520;
active dark filament (R-8207) 1547E; minor events: He
(R-8207) 0009B, 0616, 0749, 1000, 1214E, 1311, 1616, and
2332; cm. solar bursts 0020, 0040, 0755, 0950, 1315, 1340,
and 2230; m. solar bursts 0755, 0950 and 1315; active dark
filament (R-8207) 0009E; dark surge (R-8207) 1344E.

Geophysical: slight-to-moderate magnetic disturbance, a pre-
liminary sudden commencement at 1225; S-SWF and SPA at
0025; S-SWF, SCNA and SPA at 0146; S-SWF, SCNA, SEA, SPA,
and SES at 0511; SEA at 1002; SFD's at 1311, 1909 and 2113;
SFD and SPA at 1530 and 1929; cosmic ray decrease continues;
homogeneous auroral arc overhead at g = 57° at 1400, and
homogeneous band at $= 57° from 1500-1600 in U.S.S.R.



1966
Oct.

10 cm
Flux
SS,

Sun- Geo-
spot mag.
No. Ap

CMP of
Region
Number

Highlights

22 121*120* 83 2

2304112 111 «(75 2

24 107 106 64 11

25 102 101 50 22

26 99 98 #47 «15

* adjusted for burst

R~8558
(N28)

R-8553 (2)
(N22)

(R-8561)
(826)

R~8554 (2)
(819)

R-8556
qs)

Solar: large spot continues, radio, int. 22, 21 cm radio noise and
1 subflare in R-8545; spot group decreases, radio int. 37, 21 cm
radio noise and 8 subflares in R-8546; spot size decreases, radio
int. 10, 21 cm radio noise and 1 subflare in R-8554; spot group
increases in size, radio int. 15, 21 cm radio noise and 5 sub-
flares in R-8556; no spot, radio int. 6 and 4 subflares in R-8558;
minor events: cm. and m. solar bursts 0910, 1310 and 2045; m.
noise storm 1045-1500 and cm. noise storm 2000-2330.

Geophysical: continued extremely magnetically quiet, 4 Kp0o, 3 KpOr,
until 2100, very slight activity thereafter; SID at 2217; iono-
spheric F region relatively quiet.

Solar: R-8545 over W limb; spot group continues, radio int. 28,
21 om radio noise and 9 subflares in R-8546; spot continues,
radio int. 9 and 21 cm radio noise in R-8554; spot group decreases
in size, radio int. 17, 21 cm radio noise and 13 subflares in
R-8556; small spot group appears, radio int. 6 and 2 subflares
in R-8558; minor events: Ho (R-8556) 0236 with cm. solar burst
and br. surge, and 2354 with cm. and m. solar bursts, (R-8546)
1337 with m. solar burst, 1423 with em. solar burst, 1907 and
2056 with em. solar burst; cm., m. and dm. solar burst 0800-1145.

Geophysical: very slight magnetic activity 0000-0300, quiet there-
after, 3 Kp0o, 1 KpOt; SID at 0205, 0234, 0615, 0955, 1024, 1344,
1420, 1940, 2055, 2237 and 2351; cosmic ray decrease begins grad-
ually, lasting until Oct. 27.

Solar: spot continues, radio int. 16, 21 cm radio noise and 7 sub-
flares in R-8546; spot continues, radio int. 9 and 21 cm radio
noise in R-8554; By spot group continues, radio int. 15, 21 em
radio noise and 8 subflares in R-8556; small spot group continues,
radio int. 7 and 1 subflare in R-8558; small spot appears, 2 sub-
flares in R-8561; no spot but radio int. 8 in R-8560; minor events:
Ho (R-8546) 0935 and 1723 with br. surge; cm. and m. solar bursts
1015-1815; m. noise storm 0825-1430; type II, <S0->320 MHz 1505-
1514; dark ‘surge (R-8556) 1510.

Geophysical: very slight magnetic activity until 1200, slight
activity thereafter; SID at 0120, 0249, 0340, 1455 and 2250;
homogeneous auroral arc overhead at ¢ = 57° over U.S.S.R.
1600-1800.

Solar: R-8546 over W limb; spot continues, radio int. 8 and 21 om
radio noise in R-8554; spot group continues, radio int. 11, 21 em
radio noise and 7 subflares in R-8556; small spot group continues,
radio int. 7 and 2 subflares in R-8558; small spot continues,
radio int. 6, and 2 subflares in R-8561; no spot, possible 21 cm
radio noise in R-8559; radio int. 7 in R-8560; minor events: cm.
and m. solar bursts 0645-0750 and 0910-1210; m. solar burst 1640-
1825; active dark filament (R-8559) 0004E, (R-8556) 0449 and 0602.

Geophysical: slight-to-moderate magnetic activity; SID at 0415 and
0727; ionospheric absorption on 30 Miz at Great Whale River 0100-
2359; striated auroral arc overhead at ¢ = 57° over U.S.S.R. 1200,
homogeneous band at ¢ = 56° 1300-2200; ionospheric F region slightly
disturbed,

Solar: spot group continues, radio int. 9, 21 cm radio noise and
1 subflare in R-8556; small spot group continues, radio int. 10
and 21 cm radio noise in R-8558; small spot continues, radio int.
10 and 11 subflares in R-8561; no spot, possible 21 cm radio noise
in R-8559; spot gone, radio int. 8 in R-8554; radio int. 6 in R-8560;
moderate green corona SE limb; minor events: Hy (R-8561) 2053 and
(R-8558) 2106; cm. and m. solar bursts 0915-1310 and m. solar burst
1905 and 1940; active filament region (R-8559) 1025.

- 61 -



eo

% 0 6

‘Augunt 4, 1967 00 ur Ot

FLARES
=inl9i

——t?

2 =10/95 =n/0

cm

‘dem
cH

Bursts

Dk

S10) n

ie

FRays, n

Bp [Kp Jo

ens
PMC)

4 [ose
%

1S 10 om Flux
93 Re
CHP Region 8915 N19

eo

oS

6 ri)

ae 8 om

August 5, 1967 00 UT OL

FLARES

1/21

10/36.

om

‘dm

Bursts

Oke
S10

o)1p

Roys

ej10
i

Ap [Kp ers

3 [se

151 10 ex flux
103 Re
GHP Region 8922 B40

cf

oS

CC

August 6, 1967 ODT OL 02

FLARES
1e/13

—1n/26
tn/22

Bursts
3

IS}tp

lo }10

iz Ze.

%

ca we

151 10 em flux

106 Re

HP Region 8916 N23(182)
Region (8931) 320
Region (8932) NIA
16452 NI7(Bp)2.
(26455) N18Cap)4

8

One of the ten mognetically quiet da;

Avgust 7, 1967 Dur Ol

FLARES.

=W/3

= 1E/26,

i

ip
la

166 10 em flux
98 Re

CHP Region 9920 522
16651 119660).
(16657) 520083
(16458) W24(BP)2

- 130 -



Day 10 cm Sun- Geo-
Flux Spot mag.
§ No. Ap

Tono-
‘Index
Ip Ta

CMP of
Region
Number

Highlights

1967 June
03

(Cont'd)

04 144 104 13

05 135 90 36

06 127 80 46

R-8831
(N26)

with m type II and IV, solar x-rays and SID; cm and dm solar burst
0600 with solar x-rays and SID; cm solar bursts 1305-1530 and
2000-2245; dm solar bursts 0210-0655; m noise storm 0315-1235; SID
at 0135, 0550, 1535, 1740, 1820, and 1925; APR (R-8821) 0420-0800
and BSL, 1510-1525 and 2005-2035, EPL (N13 E limb) 2300-0100.

Solar: 1 subflare in position of R-8824 at W limb; spot continues
with radio int. 12 and 1 subflare in R-8829; spot gone in R-8830;
spot groups continue with one y-type, radio int. 78 and 16 sub-
flares in R-8831; small spot with radio int. 10 and 3 subflares
in R-8837; small spot appears with radio int. 6 in R-8838.

Geophysical: some very slight magnetic activity, increasing to slight-
to-moderate after 1200.

Events: major: Ha (R~8831) 0954-1107, impt. 2n; minor: Ha (R-8825)
0055 with cm solar burst and 0600; Ha (R-8829) 0236, 0734, and 0754
with cm, m, and Dkm solar burst; Ha (R-8831) 0823 with Dkm solar
burst, and 1031; cm solar bursts 0545-0935, and 2040-

2315; dm solar bursts 0650-0920 and 1510-1910; m noise storm 0410-
2400D; SID at 0125;

Solar; spot continues with radio int. 31 and 4 subflares in R-8829;
spot groups continue with one y type, radio int. 63 and 3 subflares
in R-8831; spot now By continues with radio int. 12 in R-8837;
small spot continues in R-8838.

Geophysical: slight~to-moderate magnetic activity early in the day,
subsiding to quiet 0300-0900, then slowly increasing until sc at
1915, followed by moderately severe storm, 1 Kp 703 ionospheric F
region disturbed in some sectors with some auroral blackout at
high latitudes; cosmic ray Forbush decrease begins late in the day,
maximum of about 5% on June 7.

Events: major: Ha (R~8829) 1846-2030, impt. 2n with dm solar burst,
solar x-rays and SID; minor: Ha (R-8829) 0444, 1343, and 1839 with
em solar burst; Ho (R-8638) 1355 with m and Dkm solar burst; dm
solar bursts 1435-1750; m noise storm 0330-1940; SID at 0005,
0530, 1925 with cm and dm solar burst, 1950, and 2305.

Solar: spot at W limb with radio int, 9 in R-8829; two spot groups
continue with one By, radio int, 66 and 5 subflares in R-8831;
spot no longer Sy, continues with radio int. 10 in R-8837; small
spot continues in R-8838.

Geophysical: severe magnetic storm, Kp 80, 0000-0300, subsiding to
very slight activity until 1800, becoming moderate; aurora over
Western Europe with rayed arc at $=63°, 0033-0120, rays were visible
to g=54°; aurora over North America to ¢=51° 0000-0500 and =58°
0600-1100; ionospheric F region very disturbed with auroral black-
out at high latitudes; Forbush decrease continues; veil, billows,
bands in moderately bright noctilucent clouds from N55.5 to 56.5
WO3 2315-0125.

Events: minor: Ho (R-8831) 1050 with cm and dm solar burst, 1212
with cm and dm solar burst, 1244, 1535, and 1617; cm solar bursts
2015-2225; dm solar bursts 0845-2320, m noise storm 0500-1440;
Dkm solar bursts 0720-1225; SID at 0650 and 1815; APR (N50-85 W
Limb) 0550-0715.

- 114 -



Day 10 cm Sun- Geo-
Flux Spot mag.

Ap

Iono- CMP of
Index Region
Ip Ia Number

Highlights

8 No.
1967 June
1294 19
13°97 1
14 101 20
15 104 35
16 108 41

5

14

(0) 0

0 © R~8843(5)
anis)

Solar: visible spot gone but radio int. 6 and 3 subflares in R-8837;
spot continues with radio int. 10 and 4 subflares in R-8836; radio
int. 6 and 3 subflares in R-8843; radio int. 7 and 1 subflare at E
limb probably in R-8852; mod. green corona NW Limb.

Geophysical: continued mostly magnetically quiet; moderately bright
and extensive noctilucent cloud display of bands and billows N52-
57.5 El0-WO7.5, 2145-0230.

Events: minor: dm solar bursts 1750-2140.

Solar: small spot again seen with radio int. 6 and 4 subflares in
R-8837; spot continues with radio int. 10 and 1 subflare in R-8836;
1 subflare in R-8840; radio int, 6 in R-8843; radio int, 8 in R-
8852; radio int. 10 and 3 subflares in R-8854; mod. green corona
NE Limb,

Geophysical: slight magnetic activity until 0300, then very slight-
to-quiet activity; faint noctilucent bands N54-57.5 W01.5-07.5,
2345-0140.

Events: minor: Ho (R-8836) 1550; Dkm type IT 2135; EPL (N30 E limb)

1610-2235 and APR 1655-1720.

Solar: radio int. 9 in R-8837 at W limb; spot continues with radio
int, 11 and 3 subflares in R-8836; spot at E limb with radio int.
8 in R-8852; spot on E limb with radio int. 16 and 1 subflare in
R-8854; br, green corona NE limb, mod, green corona NW limb,

Geophysical: mostly slight magnetic activity, some moderate activ-
ity 1200-1500; very faint veil and noctilucent band N55 WO4.5,
2215-0145.

Events: mino: Ho (R-8854) 1713 with APR, BSL, EPL, and solar x-
rays, and 2138; cm solar burst 2200; dm solar burst 1410; solar
x-rays 1335 and 2235 with SID; BSL (R-8836) 1515-1545 and EPL
1505-1555.

Solar: spot at W limb with radio int, 13 and 4 subflares in R-8836;
spot continues with radio int, 9 and 1 subflare in R-8852; second
spot at E limb with radio int, 22 and 2 subflares in R-8854; br.
green corona NE limb; mod. green corona NW limb,

Geophysical: slight-to-moderate magnetic activity until 0600, sub-
siding to quiet thereafter; ionospheric F region slightly dis-
turbed.

Events: minor: Ha (R-8836) 0730, 1753, 2102, 2131, and 2324; cm
and dm solar burst 1250 and 1435; APR (R-8836) 0600-1600 and 1100~
1705 and BSL, 1150-2125; APR (R-8854) 0600-1600 and BSLs 1430-
1705 and 1720-1810.

Solar: radio int. 10 and 1 subflare in R-8836; spot continues with
radio int. 8 and 4 subflares in R-8852; three spot groups with
radio int. 22 and 6 subflares in R-8854; spot at E limb with radio
int, 8 and 1 subflare in R-8858; br. green corona NE limb,

Geophysical: very slight magnetic activity 0600-1800, otherwise
quiet; very faint billows in noctilucent clouds N55-55.5 W03-04.5,
0005-0205 and very faint bands N50-57.5 WO3.5-5.0, 2315-0325.

Events: minor: Ha (R-8836) 0022, 0258, 0407, and 0807; Ha (R-8854)
0102, 0645, and 1834; SID at 0400, 1335 with cm and dm solar burst,
1850 and 2015; APR (N41 E limb) 1210-2350.

() estimated from less than 24 hours of data

- 116 -



For each date a series of time lines are presented. In the first block
the duration of flares of >1f is shown by a horizontal line, followed
by the importance with a slant line separating the last two digits of
the serial number of the calcium plage region in which the flare occur-
red. These are selected from the grouped flare reports as published in
IER-FB "Solar~Geophysical Data" reports. Fixed frequency solar noise
bursts are indicated by vertical tick marks by wave-length (frequency)
range at the time of beginning of the burst. The ranges are defined as
dekameter = <40 MHz, meter = 40-400 MHz, decimeter = 400-1500 MHz, and
centimeter = >1500 MHz. Spectral events of types II and IV are shown
by the appropriate Roman numeral. Sudden ionospheric disturbances and
solar x-ray bursts (2 - 12A) from satellite Explorer 33 are shown on the
next two lines by vertical tick marks at time of beginning of the events.

The Ap for the day is given in the left-hand portion of the final two
lines which give the eight Kp values centered in the appropriate three-~
hour time blocks, and the time of storm sudden commencements, if any, by
a triangle. The exact time is given with the number of observatories
reporting the sc in parentheses. At the right-hand side of these last
two lines are given the ionospheric indices Ip and Ia (see above).

Below the time lines at the left-hand side are given the 10cm solar flux
(2800 MHz), the final daily Zurich relative sunspot number Rz, the cal-
cium plage region numbers on their date of CMP together with their lati-
tude and number of rotations, if more than one in the parentheses, and
the number of the Mt. Wilson sunspot regions at CMP together with their
latitude, magnetic classification by Q, B, y, g and largest spot (pre-

ceding "p" or following "£") and a digit encoding field strength where:

1= 100 - 500 gauss 6 = 2600 - 3000 gauss
2 = 600 - 1000 7 = 3100 - 3500

3 = 1100 - 1500 8 = 3600 - 4000

4 = 1600 - 2000 9 = 4100 - 4500

5 = 2100 ~ 2500 10 =>4500

Calcium and/or sunspot region numbers in parentheses signify that the
regions were never actually at the Central Meridian; they had either
died while on the Eastern Hemisphere or were born on the Western Hemi-
sphere.

Word statements are given if the date is one of five disturbed or five
or ten quiet magnetic days. Auroral displays are usually mentioned only
if the southern limit reached ¢ (geomagnetic latitude) less than 60°;
data sources are J. Paton, N. V. Pushkov and P. M. Millman. Comments on
general ionospheric conditions are provided by W. R. Piggott. Comments
on Forbush cosmic ray decreases are from the Deep River charts, limited
to those of 3% or greater. Polar cap absorption data are provided by
ESSA when confirmed. WNoctilucent cloud dates are furnished by J. Paton,
Outstanding green corona, peaks >150 in indices published in "Solar-Geo-
physical Data" are mentioned by limb quadrant on date the peak would be
at CMP. Peaks in red or yellow corona line intensities are also given,
whenever appropriate. Solar proton increases observed on Explorer 34
as published in "Solar-Geophysical Data" are given with nominal time of
maximum.

-4-



Day 10 cm Sun- Geo~
Flux spot mag.

S__No,

Ap.

Tono-

Index
Ip fa

CMP of
Region
Number

Highlights

1967 March
15 134 49

16 133 58

17 134 70

18 133 73

19 137 58

20 142 73

2

23

26

13

it}

0

9

0

2

6

R-8722
(N20)

R-8729
(N29)

R-8731
(N21)

R-8727
(S15)

Solar: radio int. 14 and 1 subflare in R-8716; spot group with radio
int. 13 and 1 subflare in R-8729; spot group growing with radio int.
28 and 12 subflares in R-8727; br. green corona NE and NW limbs; mod.
green corona SE limb; mod. red corona NE and NW limbs,

Geophysical: mostly magnetically extremely quiet, 1 Kp0o, 4 Kp0+;
ionospheric F region relatively quiet.

Events: minor: Ho (R-8716) 1145, (R-8727) 2048 with SID and dm and
em solar burst.

Solar: radio int. 7 in position of R-8716 at W limb; spot group
decreasing with radio int. 10 in R-8729; spot group continues with
radio int. 26 and 5 subflares in R-8727; spot group on W limb with
radio int. 34 and 9 subflares in R-8733; br. green corona NE and
NW limbs; mod. green corona SE and SW Limbs.

Geophysical: continued magnetically extremely quiet throughout most
of the day, very slight activity after 2100; ionospheric F region
relatively quiet.

Events: minor: Ha (R-8733) 0652, 1450 with APR and BSL; (R-8716)
0828, 2343 with SID, BSL and cm solar burst; BSD (R-8733) 0844,

Solar: spot with radio int. 11 in R-8729; spot group continues with
radio int. 30 and 10 subflares in R-8727; multiple spot groups wita
radio int. 36 and 6 subflares in R-8733; small spot appears with
radio int. 7 in R-8731; br. green corona NE and NW limbs; mod. green
corona SW limb.

Geophysical: mostly magnetically quiet, occasional very slight
activity; ionospheric F region relatively quiet.

Events: . minor: Ho (R-8727) 0745 with DSD, (R-8733) 2151 with dm
and cm solar burst; DSD (R-8727) 1200.

Solar: spot with radio int. 9 in R-8729; spot group continues with
radio int. 27 and 2 subflares in R-8727; spot groups continue with
radio int. 32 and 7 subflares in R-8733; small spot continues with
radio int. 5 in R-8731.

Geophysical: slight-to-moderate magnetic activity increasing to
moderately severe storm 1500-1800, Kp6+, subsiding to slight activity
thereafter; aurora overhead in U.S.S.R. to $ = 54° 1400-1500;
ionospheric F region slightly disturbed in some sectors.

Events: None

Solar: spot with radio int, 11 in R-8729; spot group continues with
radio int. 16 and 3 subflares in R-8727; spot groups continue with
radio int. 28 and 7 subflares in R-8733; small spot with radio
noise int. 6 in R-8731; mod. green corona NE limb; br. green corona
NW Limb.

Geophysical: slight-to-moderate magnetic activity until 0900, then
subsiding before increasing to moderate storm 1500-2400; aurora
overhead in U.S.S.R. to 6 = 54° 1300 and $ = 53° 1800-1900, weak
display in Western Europe visible around midnight to $ = 58°:
ionospheric F region disturbed with some auroral blackout at high
latitudes.

Event: minor: Ho (R-8733) 0244 with SID and cm solar burst.

Solar: small spot over W limb with radio int. 10 in R-8729; spot
group continues with radio int. 18 and 2 subflares in R-8727; spot
groups increase with radio int, 23 and 17 subflares in R-8733; spot
with radio int. 9 in R-8731; spot on E limb with radio int. 34 and
3 subflares in R-8740; br. green corona NE and NW limbs.

- 93 -



1966 10 cm Sun- Geo- CMP of Highlights
July Flux spot mag. Region
S Sq No, Ap Number

9 104 108 56 36 R-8384(5) Solar: spot continues, radio int. 52, 21 om radio noise
(N25) and 15 subflares in R-8362; spot continues with 1 sub-

flare in R-8379; spot continues, radio int. 19 and 21 cm
radio noise in R-8382; small spot continues, radio int.
13 and 2 subflares in R-8390; radio int. 12 in R-8392;
major events: Hy (R-8362) impt. 2b, 0310-0510 with cm.
and m, solar burst, br, surge and active prominence re-
gion; impt. 2n, 0713E-1005D with cm. and m. solar bursts
and br. surges and active prominence region; minor events:
Ha (R-8362) 0230 with cm. solar burst, 06008 with cm. solar
burst and br. surge; and 1108E; cm. and m. solar burst
1715; br. surge (R-8392) 2150.

Geophysical: continued moderately severe magnetic storm;
SPA and SES at 0010; S-SWF, SCNA and SPA at 0228 and 0307;
SPA at 0542; SCNA, SEA and SPA at 0718; SCNA at 1309; SEA,
SPA and SES at 2018; cosmic ray decrease most intense;
ionospheric absorption on 30 MHz continues; ionospheric F
region very disturbed with auroral blackout at high lati-
tudes, PCA ends about 0000; at 0000-0500 aurora overhead
at ¢ = 52° and at 0600-1100 not overhead at # = 54° over
North America.

zo 105108" 58 25 —-R-8390 Solar: spot over W limb, radio int. 38, 21 cm radio noise
(N19) and 10 subflares in R-8362; small spot continues with
21 em radio noise and 4 subflares in R-8379; spot con~
tinues in R-8382; small spot continues with radio int. 9
in R-8390; radio int. 9 in R-8392; 3 subflares in R-8373;
spot appears with radio int. 7 in R-8394; moderate green
corona-on NE and NW limbs; minor events: Hx (R-8362)
0122E with cm. solar burst and br. surges, 0227 with br.
surge, 0334, 0658E with cm. solar burst, 0905 with br.
surge and active prominence region, 1105 with br. surge,
and 1935 with cm, solar bursts and active prominence
region; cm. solar bursts 1145 and 1610-1740; br. surges
(N25 E limb) 1100E and 1603; dark surge (R-8379) 0914.
Geophysical: continued moderate magnetic activity until
1500; SPAs at 0028, 0646 and 2317; SCNA and SES at 0336;
SCNA, SEA and SPA 0711; S-SWF, SCNA, SEA and SPA at 1142;
SPA and SES at 1330; S-SWF, SCNA, SEA, SPA and SES at
1620; SL-SWF, SPA, SES and SFD at 1800; SL-SWF, SCNA,
SPA and SES at 1932; SEA, SPA and SES at 2010; recovery of
cosmic ray decrease; ionospheric absorption on 30 MHz con-
tinues; ionospheric F region disturbed with some auroral
blackout at high latitudes; at 0000-0500 aurora overhead
at ¢ = 58° over North America.

pon 105 109 52 8 R-8394 Solar: radio int. 29, 21 cm radio noise and 2 subflares in
(s31) R-8362; small spot continues with 21 cm radio noise and 7

R-8385 subflares in R-8379; spot continues with 21 cm radio noise

(N30) in R-8382; radio int. 8 in R-8290; radio int. 10 and 21 cm

radio noise in R-8392; spot continues with radio int. 12
in R-8394; radio int. 9 and 1 subflare in R-8396; 1 sub-
flare in R-8397 at E limb; major event: Ha (R-8362) impt.
3n, O900E-1052 with cm. and m. solar bursts, br. surges and
eruptive prominence; minor events: Ho (R-8362) 0625E with
active prominence region, (R-8379) 0736E (R-8394) 0835E
with dark surge; dark surge (R-8397) 2258; active promi-
nence region (R-8397) 1051-1407.

Geophysical: some slight magnetic activity with a prelimi-
nary sudden commencement at 1542; SGNA, SEA and SPA at
0905; ionospheric absorption on 30 MHz ends at 1847 but
begins again at 2300; ionospheric F region slightly dis-
turbed in some sectors.

%* adjusted for burst

~ 38 -



pee. 2, 1957 00 UT Ol 02 OB

FLARES

em mt

dm.

mm

Bursts

Dim,

S10 n

Rays

Ap |

20

is ie

a

]tp
io

is_|

Kp.

sc

135 10 em flux
326 Re
ue 9095 wit

9094 §26(4) 16587 930 (af)L

oe 8

Dec. 3, 1967 00 ural

& 12

5

8 a

‘Aucota overhead over USSR at ¢ = 59° 2800-1900 and ¢ = $8* 1900-0200; tonospherie F region disturbed with

sureral blackout.

FLARES

om
dn

Bursts

m

Dem

Si

Rays,

p |_Ke. i

ie

a

ie.

jo |p

jy ]t0

3 [se

0 &
124 10 ea flux
39 Re

ow (16593) $28 (op)?

16589 NOB (uf)

pec. 4, 1967 00 ur Ol 02

o

ca ie

5

Aurora overhead over N. Anerica at ¢ = 56° 0000-0500; aurora overhead over USSR Co # = 55° 1400 and ¢ = 57°
1500"1600; fonospheric F region slightly disturbed fa some sectors; solar proton inereage on >10, 30 and 60 Hey

counters on Explorer 34 reaches max. at sbout 1300.

Bt

FLARES

om

‘dm

m

Bursts

Oke

S10.

XRoys

Bp [Kp

‘alte

z{

jajto

130 10 em f1vx
79 Re
cup 9098 N15

9099 $14 (16579) S25 (6E)1
9105 N27 16582 N25 (ap)

Dec. 5, 1967 Our Ol 02 OB

4

FLARES

om

‘dm

m

Bursts

Okm

S10.

X-Rays,

@p [Ke

3

‘al ip

a3 [sc

2|10

125 10 em flux
79 Rs

Dee. 6, 1967 00 UT OL 02

6 09 i

ie q

Wooogeneous aurora are visible over ¥. Europe to ¢ = 59° 2050-0010; aurora overhead over USSR at 9 = 54°

1800 ané ¢ » 57* 1900-2100.

8 Tk

FLARES

= 10/08 == 10/08

om

‘dm

m

Bursts

‘Okm,

SID

X-Rays

Ap |_Kp es

Ens

S}Ip

a [se

[Io

C) 8

134 10 em flux.
89 Re

08 09 ig

5

8 a

Homogeneous auroral arc visible intermittently over H. Europe at ¢ = 59° 2020-0350; aurora overhead over USSR
mt

at g = 54° 1300:

158



Joly 16, 1967 00 ur Ol 020345 tw

FLARES
10/8

Bursts

{Ko rr = i i oe iz rE ie dtp

[ose Ola
@ & 7 8 & i ib Fi

126 10 cx flux

73 Be One of ten sagnetically quiet a

MP Region 8888 $20

Region 8890 118(2)
16431 522(89)1

July 17, 1967 ur ol St nt
FLARES
1/94 1/95. 1n/99 —

> Lee i
3 [Cam
® [im

S10

X-Rays
%p |_Ke i = o i Te ens 2s. ain
4j se Oro

iv 8 0 & ae 5 8 a

126 10 en flux
67 Re Tonospheric F region relatively quiet.
O4P Region 8889 $19(3)

16432 SLB(B)3

July 18, 1967 00 ur Ol 02 OSS att

FLARES
= 1n/86.

com
‘dm
‘Okm

S10.
XeRoys
Tt Kp = = 20 ae as cs io 2o ae
zbose To
o 6 c) a i cy a 4

Bursts

127 10 em flex
78 Rx Moderately bright nsctilucent bans

HP Regton 8891 126¢4) 1
soly 19, 1967 0 ur} Oko ttew
FLARES
= 10/99 1/01 — inis9
>
3 [Cem
3 [om ni
© [onm
S10
X-Rays n i
TM [_Ke iz Ee = oy is Te Te we 3]1p
4 [ose O10
e & 8 @ 5 18 f] 4

221 10 en flex
61 Re One of ten magnetically quiet days; tons
GAP Rogion (8908) wis

Region (8910) N03

Region 8893 127(4)

eric F region relatively quiet.

- 125 -



Day 10 cm Sun~ Geo-
S Flux spot mag.
S_ No. Ap

Iono- CMP of
Index Region
Ip ia Number

Highlights

1967 April
u

(Cont'd)

12:129* = 51 4

13 126 63 2

14 133 48 3

15 123 51 4

16 125 32, «10

* adjusted for burst

0 0 R-8767(2)
(N16)

Geophysical: magnetically quiet with 3 Kp0+.

Events: major: Ha (R-8753) impt. 2b, 2101-2156 with cm solar burst
and $ID; minor: Ho (R-8753) 0744 with Dkm, m and cm solar bursts
and SID, 0800, 1112 with SID; Ha (R-8760) 1334 with cm and dm
solar bursts and SID and 1336; cm solar burst 1035; m noise storm
0625-1500; ADF (R-8760) 0345-0715.

Solar: small spot continues with 1 subflare in R-8758; spot group
continues with radio int. 23 and 17 subflares in R-8753; spot group
continues to grow with radio int. 30 and 3 subflares in R-8760; spot
continues with radio int. 7 in R~8767; radio int. 21 and 1 subflare
in location of R-8776 at E limb; br. green corona NE limb.

Geophysical: slight magnetic activity 0000-0600 but extremely quiet
thereafter with 3 Kp0+ and 1 Kp0o.

Events: minor: Ha (R-8753) 0533 with cm solar burst, SID and DSD,
1107 with m solar burst and DSD; Ha (R-8776) 1657; m solar bursts
0640--1500; Dkm, m, dm and cm solar bursts 1155; DSD and BSL (S23
W80) 1520.

Solar: small spot disappears with 1 subflare in R-8758; spot goes
over W limb with radio int. 17 and 3 subflares in R-8753; spot
group continues with radio int. 32 and 3 subflares in R-8760; spot
appears again with 1 subflare in R-8761; spot size decreasing with
radio int. 7 in R-8767; spot group over E limb with radio int, 23
in R-8776; mod. green corona NE limb.

Geophysical: magnetically extremely quiet with 3 Kp0+ and 1 Kp0o;
ionospheric F region relatively quiet.

Events: minor: Ha (R-8760) 0935 and 1926 with cm solar burst and
SID; m noise storm 1100-1440; cm noise storm 2100-2315; SID at 1235.

Solar: spot group continues with radio int.38 and 7 subflares in
R-8760; spot continues with 7 subflares in R-8761; spot continues
to decrease with radio int. 8 in R-8767; spot continues with radio
int. 34 in R-8776; spot appears, then disappears, radio int. 9 in
R-8766; br. green corona NE limb; mod. green corona SW limb.

Geophysical: continued magnetically quiet; ionospheric F region
relatively quiet.

Events: minor: Ha (R-8760) 0805 with m solar burst, 1052, 1704 with
dm and cm solar bursts and Dkm type II and SID, and 2236; dm and cm
solar bursts 1635; APR (R-8766) 0950-1220; EPLs (R-8757) 1250-1445;
SID at 1915.

Solar: spot group continues as plage goes over W limb with radio iat.
24 and 1 subflare in R-8760; spot growing near W limb with 1 sub-
flare in R-8761; small spot continues with radio int. 6 in R-8767;
spot continues with radio int. 32 and 2 subflares in R-8776.

Geophysical: continued magnetically quiet; ionospheric F region
relatively quiet.

Events: minor: Ha (R-8776) 1807 with DSD; cm rise and fall 0630-0900;
Dkm solar burst and BSL (R-8760) 0945; APR (S40 E65) 1030.

Solar: spot gone, though 2 subflares in R-8761 as region goes over
W limb; small spot continues with radio int. 8 and 2 subflares in
R-8767; spot continues with radio int. 36 and 4 subflares in R-8776;
radio int. 20 in R-8778 at E limbs radio int. 17 and 4 subflares in
R-8779 at E limb.

- 100 -



1966 10 cm

Highlights

100 104 55

103 106 66

111115 56

Solar: radio int. 8 in R-8392; radio int. 8 and 1 subflare
in R-8396; spot continues, radio int. 16, 21 cm radio
noise and 1 subflare in R-8397; spot continues to decrease,
radio int. 10 and 21 cm radio noise in R-8401; spot con-
tinues, radio int. 8 and 2 subflares in R-8402; spot ob-
served, radio int. 30, 21 cm+radio noise and 2 subflares
in R-8405; small spot continues with 1 subflare in R-8400;
3 subflares in R-8408; minor events: Ha (R-8405) 0935E.

Geophysical: slight-to-moderate magnetic activity; iono-
spheric absorption on 30 MHz ends at 1040; at 0000-0500
aurora overhead at ¢ = 59° and at 0600-1100 at ¢ = 59° not
overhead over North America; faint noctilucent clouds seen
over Western Europe at 55° from 2230-2330.

Solar: radio int. 7 in R-8396; spot continues, radio int.
15, 21 cm radio noise and 2 subflares in R-8397; spot
continues with radio int. 9 and 21 om radio noise in
R-8401; spot disappears, radio int. 8 and i subflare in
R-8402; spot continues, radio int. 33, 21 cm radio noise
and 1 subflare in R-8505; small spot disappears in R-8400;
spot appears, radio int. 11, 21 cm radio noise and 3 sub-
flares in R-8408; minor events: HY (R-8405) 0935E with
dark surge, (R-8413) 2043 with br. surge; br. surge (R-8413)
0046; active prominence region (N18 E limb) 2240.

Geophysical: moderate magnetic disturbance 0000-0300, quiet
thereafter; SL-SWF at 0100; ionospheric F region slightly
disturbed.

R-8404(485) Solar: spot continues, radio int. 14, 21 cm radio noise and

117 121 70

2 subflares in R-8397; spot continues with radio int. 9 in
R-8401; radio int. 7 in R-8402; spot continues, radio int.
37, 21 cm radio noise and 1 subflare in R-8405; spot con-
tinues, radio int. 25, 21 cm radio noise and 9 subflares
in R-8408; spot disappears in R-8400; radio int. 14 and
1 subflare in R-8413 at E limb; moderate green corona on
NE limb; major event: Ht (R-8408) impt. 2n, 0930-1020D
with cm. and m. solar bursts, dark surge and br. surge;
minor events: Hy (R-8408) 0542E with cm. and m. solar
bursts, and 0755E; cm. solar burst 1420;\cm. solar burst
0240; active prominence region (R-8413) 0924; br. surges
(R-8413) 1230 and 1430; eruptive prominence (R-8413) 2145.
Geophysical: very slight magnetic activity; S-SWF, SCNA and
SES at 0239; S-SWF, SCNA and SPA at 0534; G-SWF, SEA, SPA,
SES and SFD at 1410.

Solar: spot continues, radio int. 14, 21 om radio noise
and 1 subflare in R-8397; spot continues with radio int.
8 in R-8401; small spot with radio int. 11 and 4 subflares
in R-8404; spot continues, radio int. 49, 21 om radio
noise and 3 subflares in R-8405; spot growing, radio int.
31, 21 cm radio noise and 14 subflares in R-8408; subflare
in R-8400; spot, radio int. 19 and 2 subflares in R-8413;
moderate green corona on NE limb; minor events: Ha (R-8413)
1216 with active prominence region: cm. burst 0035; cm. and
m. solar burst 0732-0745; sudden disappearance of filament
(R-8404) 1025.

Geophysical: magnetically quiet except for slight disturb-
ance 0000-0300; SCNA at 0039; ionospheric absorption on
30 Miz at Great Whale River 0030 to 1524; br. and wide-
spread display noctilucent clouds seen from Labrador over
Western Europe at latitudes 55° to 60° from 2340 to 0330.

-41l-