From: oler@rho.uleth.ca (Cary Oler)
Subject: Daily Summary of Solar Geophysical Activity for 12 August
Apparently-To: sci-space-news@ames.arc.nasa.gov
Followup-To: sci.space
Organization: University of Lethbridge
Date: Thu, 13 Aug 1992 02:57:40 GMT

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

                 DAILY SUMMARY OF SOLAR GEOPHYSICAL ACTIVITY

                               12 AUGUST, 1992

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

                  (Based In-Part On SESC Observational Data)


SOLAR AND GEOPHYSICAL ACTIVITY INDICES FOR 12 AUGUST
----------------------------------------------------

!!BEGIN!! (1.0) S.T.D. Solar Geophysical Data Broadcast for DAY 225, 08/12/92
10.7 FLUX=128.3  90-AVG=125        SSN=060      BKI=3343 3120  BAI=012
BGND-XRAY=B3.9     FLU1=4.3E+05  FLU10=1.1E+04  PKI=3333 3222  PAI=010
  BOU-DEV=020,036,046,026,021,008,010,003   DEV-AVG=021 NT     SWF=01:002
 XRAY-MAX= M1.0   @ 0234UT    XRAY-MIN= B3.5   @ 2259UT   XRAY-AVG= B5.8
NEUTN-MAX= +003%  @ 1840UT   NEUTN-MIN= -002%  @ 2335UT  NEUTN-AVG= +0.1%
  PCA-MAX= +0.2DB @ 1250UT     PCA-MIN= -0.2DB @ 1220UT    PCA-AVG= +0.0DB
BOUTF-MAX=55260NT @ 2331UT   BOUTF-MIN=55219NT @ 1659UT  BOUTF-AVG=55247NT
GOES7-MAX=P:+676NT@ 0142UT   GOES7-MIN=N:-004NT@ 0617UT  G7-AVG=+068,+044,+008
GOES6-MAX=P:+094NT@ 0238UT   GOES6-MIN=E:-009NT@ 0946UT  G6-AVG=+077,+006,+030
 FLUXFCST=STD:123,118,110;SESC:120,110,100 BAI/PAI-FCST=010,005,005/015,010,010
    KFCST=3332 2222 3332 2222  27DAY-AP=016,008   27DAY-KP=2225 4333 3301 2222
 WARNINGS=*SWF
   ALERTS=**MINFLR:M1.0@0234UTC;**245STRM:1031-1206UTC
!!END-DATA!!


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

     Solar activity was moderate.  A class M1.0/1N flare was observed from
Region 7248 (S13W63) at 02:34 UT.  Region 7248 exhibited decay following this
flare.

     Region 7260 (N16E63) more fully rotated into view today as a large DKI
spot group of 1,030 millionths.  It contains a north-south oriented neutral
line and is capable of supporting minor M-class flares.

     No new regions were numbered today.

     Solar activity is expected to be low to moderate.  M-class flare
activity is possible in Regions 7260 and 7248.  All of the other regions,
which are now mostly spotless areas of plage, are not expected to produce any
substantial activity.

     The geomagnetic field was generally quiet over the last 24 hours.  A few
mildly unsettled periods were observed over the middle latitude regions,
while high latitudes observed a few active periods between 06:00 UT and 15:00
UT.  The field is expected to be mostly unsettled to quiet over the next 24
to 72 hours.

     HF propagation conditions were near-normal over all regions.  Todays
M-class flare does not appear to have produced a short wave fadeout.
Propagation conditions are expected to be near-normal over all regions
throughout the next 72 hours.  High and polar latitude paths will continue to
see minor night-sector signal degradation over the next 24 hours.
Improvements are expected on 14 and 15 August when levels of geomagnetic
activity subside to quieter levels.  No significant disturbances are expected
at this time.


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

REGIONS WITH SUNSPOTS (LOCATIONS VALID AT 12/2400Z)
---------------------------------------------------
NMBR LOCATION  LO  AREA  Z   LL   NN MAG TYPE
7248  S13W63  027  0360 DKO  10  013 BETA
7256  S16E13  311  0050 DSO  03  002 BETA
7260  N16E63  261  1030 DKI  10  015 BETA
7250  N25W74  038                    PLAGE
7251  S20E37  287                    PLAGE
7254  N05W52  016                    PLAGE
7255  S10W50  014                    PLAGE
7258  S13W88  052                    PLAGE
7259  S11W12  336                    PLAGE
REGIONS DUE TO RETURN 13 AUGUST TO 15 AUGUST
NMBR LAT    LO
7243 N12   215


LISTING OF SOLAR ENERGETIC EVENTS FOR 12 AUGUST
-----------------------------------------------
BEGIN  MAX  END  RGN   LOC   XRAY  OP 245MHZ 10CM   SWEEP SWF
 0229 0234 0237 7248  S13W51 M1.0  1N
 0306 0307 0307                          150
 1031 1031 1032                          120
 1052 1052 1053                          340
 1832 1849 1853 7248  S14W60 C1.0  SF    250


POSSIBLE CORONAL MASS EJECTION EVENTS FOR 12 AUGUST
---------------------------------------------------
           UT TIME                 OPTICAL          XRAY    RADIO
 BEGIN        MAX      END     LOCATION   TYPE   SIZE  DUR  II IV
NO EVENTS OBSERVED


INFERRED CORONAL HOLES (LOCATIONS VALID AT 12/2400Z)
----------------------------------------------------
               ISOLATED HOLES AND POLAR EXTENSIONS
      EAST   SOUTH  WEST   NORTH  CAR  TYPE  POL  AREA  OBSN
48   N42E87 N14E22 N18E21 N42E87  272  ISO   POS   040 10830A


**  End of Daily Report  **