From: oler@rho.uleth.ca (Cary Oler)
Subject: Daily Summary of Solar Geophysical Activity for 26 July
Apparently-To: sci-space-news@ames.arc.nasa.gov
Followup-To: sci.space
Organization: University of Lethbridge
Date: Mon, 27 Jul 1992 06:30:24 GMT

                /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\

                  DAILY SUMMARY OF SOLAR GEOPHYSICAL ACTIVITY

                                26 JULY, 1992

                /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\

                  (Based In-Part On SESC Observational Data)


SOLAR AND GEOPHYSICAL ACTIVITY INDICES FOR 26 JULY
--------------------------------------------------

!!BEGIN!! (1.0) S.T.D. Solar Geophysical Data Broadcast for DAY 208, 07/26/92
10.7 FLUX=101.1  90-AVG=127        SSN=082      BKI=2111 1111  BAI=003
BGND-XRAY=B1.5     FLU1=2.6E+05  FLU10=1.2E+04  PKI=3312 2222  PAI=007
  BOU-DEV=013,006,005,009,007,006,005,008   DEV-AVG=007 NT     SWF=00:000
 XRAY-MAX= C2.6   @ 1214UT    XRAY-MIN= B1.4   @ 2208UT   XRAY-AVG= B2.1
NEUTN-MAX= +003%  @ 2355UT   NEUTN-MIN= -001%  @ 1955UT  NEUTN-AVG= +0.5%
  PCA-MAX= +0.1DB @ 1435UT     PCA-MIN= -0.2DB @ 0915UT    PCA-AVG= -0.0DB
BOUTF-MAX=55245NT @ 2359UT   BOUTF-MIN=55202NT @ 1907UT  BOUTF-AVG=55230NT
GOES7-MAX=P:+112NT@ 2011UT   GOES7-MIN=N:+001NT@ 0154UT  G7-AVG=+085,+039,+009
GOES6-MAX=P:+125NT@ 2012UT   GOES6-MIN=E:-011NT@ 1454UT  G6-AVG=+099,+002,+030
 FLUXFCST=STD:105,105,110;SESC:105,105,110 BAI/PAI-FCST=005,010,010/010,010,010
    KFCST=1122 3221 1223 4321  27DAY-AP=045,048   27DAY-KP=4754 5345 6763 3333
 WARNINGS=
   ALERTS=
!!END-DATA!!


SYNOPSIS OF ACTIVITY
--------------------

     Solar activity became low today.  Region 7238 (S21E43) dominated in
activity by spawning two small C-class subflares.  The largest of these was a
class C2.6/SF subflare at 12:14 UT that was accompanied by a small 245 MHz
radio burst.  Both events were impulsive and non-impressive.

     Region 7238 remained fairly stable in terms of growth.  No significant
changes were observed over the last 24 hours.

     Two new regions were assigned today: Regions 7240 (S14W08) and 7241
(N15E69).  Region 7241 appears to be the return of old Region 7216, which was
due back today.  The region consists of a simple and small H-type spot and
is expected to remain quiet.  Another minor region appears to be rotating
around the northeast limb.  It will be numbered tommorrow.

     Solar activity is expected to continue very low to low.  Occasional
isolated B and C-class flares are expected, primarily from Region 7238.
Nothing more energetic is anticipated at this time.

     The geomagnetic field was quiet throughout the day.  Similar quiet to
mildly unsettled conditions are expected to persist over the next 72 hours.

     HF propagation conditions were normal over all regions.  Areas of
spread-F and isolated blanketing sporadic-E degraded conditions over numerous
areas, although overall global propagation was near-normal.  No significant
changes are expected over the next 72 hours.


COPIES OF JOINT USAF/NOAA SESC SOLAR GEOPHYSICAL REPORTS
========================================================

REGIONS WITH SUNSPOTS (LOCATIONS VALID AT 26/2400Z)
---------------------------------------------------
NMBR LOCATION  LO  AREA  Z   LL   NN MAG TYPE
7232  N15W67  256  0050 CSO  06  006 BETA
7236  N18W58  247  0010 AXX  01  002 ALPHA
7238  S21E43  146  0220 DSO  09  006 BETA
7239  S13W36  225  0010 BXO  03  002 BETA
7240  S14W08  197  0010 BXO  03  005 BETA
7241  N15E69  120  0060 HSX  02  001 ALPHA
REGIONS DUE TO RETURN 27 JULY TO 29 JULY
NMBR LAT    LO
7223 S12   093


LISTING OF SOLAR ENERGETIC EVENTS FOR 26 JULY
---------------------------------------------
BEGIN  MAX  END  RGN   LOC   XRAY  OP 245MHZ 10CM   SWEEP SWF
 0814 0820 0824 7238  S22E60 C1.3  SF    200
 1205 1214 1218 7238  S21E58 C2.6  SF    420


POSSIBLE CORONAL MASS EJECTION EVENTS FOR 26 JULY
-------------------------------------------------
           UT TIME                 OPTICAL          XRAY    RADIO
 BEGIN        MAX      END     LOCATION   TYPE   SIZE  DUR  II IV
25/A1700            26/B0711     N27E20   DSF
26/A0222            26/B1340     N27E20   DSF


INFERRED CORONAL HOLES (LOCATIONS VALID AT 26/2400Z)
----------------------------------------------------
               ISOLATED HOLES AND POLAR EXTENSIONS
      EAST   SOUTH  WEST   NORTH  CAR  TYPE  POL  AREA  OBSN
                 NO DATA AVAILABLE FOR ANALYSIS


**  End of Daily Report  **
Newsgroups: sci.space.news