From: oler@rho.uleth.ca (Cary Oler)
Subject: Daily Summary of Solar Geophysical Activity for 25 August
Apparently-To: sci-space-news@ames.arc.nasa.gov
Followup-To: sci.space
Organization: University of Lethbridge
Date: Wed, 26 Aug 1992 03:33:38 GMT

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

                 DAILY SUMMARY OF SOLAR GEOPHYSICAL ACTIVITY

                               25 AUGUST, 1992

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

                  (Based In-Part On SESC Observational Data)


SOLAR AND GEOPHYSICAL ACTIVITY INDICES FOR 25 AUGUST
----------------------------------------------------

!!BEGIN!! (1.0) S.T.D. Solar Geophysical Data Broadcast for DAY 238, 08/25/92
10.7 FLUX=098.1  90-AVG=125        SSN=026      BKI=2211 2012  BAI=004
BGND-XRAY=B2.7     FLU1=9.4E+05  FLU10=1.1E+04  PKI=2221 2233  PAI=008
  BOU-DEV=017,017,008,006,010,004,006,013   DEV-AVG=010 NT     SWF=00:000
 XRAY-MAX= C8.7   @ 1920UT    XRAY-MIN= B1.7   @ 2227UT   XRAY-AVG= B6.1
NEUTN-MAX= +004%  @ 2015UT   NEUTN-MIN= -001%  @ 2230UT  NEUTN-AVG= +1.1%
  PCA-MAX= +0.1DB @ 2115UT     PCA-MIN= -0.2DB @ 1750UT    PCA-AVG= -0.0DB
BOUTF-MAX=55449NT @ 2342UT   BOUTF-MIN=54529NT @ 1811UT  BOUTF-AVG=55242NT
GOES7-MAX=P:+125NT@ 2015UT   GOES7-MIN=N:+004NT@ 2357UT  G7-AVG=+091,+041,+011
GOES6-MAX=P:+136NT@ 2144UT   GOES6-MIN=E:-012NT@ 1013UT  G6-AVG=+102,-005,+033
 FLUXFCST=STD:095,095,100;SESC:090,095,100 BAI/PAI-FCST=010,010,015/010,010,015
    KFCST=2222 2222 2222 2212  27DAY-AP=005,010   27DAY-KP=1221 1222 3222 2333
 WARNINGS=
   ALERTS=
!!END-DATA!!


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

     Solar activity was low.  The largest flare of the day originated from
Region 7260 (N14W103) from behind the west limb and attained a class C8.7
xray level at 19:20 UT.  This event was of fairly long duration and
maintained xrays above C-class levels for over 150 minutes between 17:00 UT
and 20:30 UT, illustrating the continuing eruptive energy extant in this
departed region.

     All of the other regions remained very stable and quiet.  New Region
7267 (N03E38) was born today as a simple and small BXO type spot group.

     Solar activity should become mostly very low.  There is a chance
departed Region 7260 could still enhance x-ray levels to C-class levels over
the next 24 hours.

     The geomagnetic field was quiet over the last 24 hours.  High latitudes
experienced a few unsettled periods.  The field should continue mostly quiet
to unsettled over the next 48 hours.  A mild enhancement to unsettled or
active levels will be possible on 28 August.

     HF propagation conditions were normal over most regions.  Similar
conditions are expected to persist over the next 48 to 72 hours.


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

REGIONS WITH SUNSPOTS (LOCATIONS VALID AT 25/2400Z)
---------------------------------------------------
NMBR LOCATION  LO  AREA  Z   LL   NN MAG TYPE
7265  S19W13  165  0030 HSX  01  001 ALPHA
7267  N03E38  114  0010 BXO  05  005 BETA
7264  N13W63  215                    PLAGE
7266  N17E13  139                    PLAGE
REGIONS DUE TO RETURN 26 AUGUST TO 28 AUGUST
NMBR LAT    LO
7248 S13   027


LISTING OF SOLAR ENERGETIC EVENTS FOR 25 AUGUST
-----------------------------------------------
BEGIN  MAX  END  RGN   LOC   XRAY  OP 245MHZ 10CM   SWEEP SWF
NO EVENTS OBSERVED


POSSIBLE CORONAL MASS EJECTION EVENTS FOR 25 AUGUST
---------------------------------------------------
           UT TIME                 OPTICAL          XRAY    RADIO
 BEGIN        MAX      END     LOCATION   TYPE   SIZE  DUR  II IV
25/ 1651     1706     1757                LDE    C1.3   65


INFERRED CORONAL HOLES (LOCATIONS VALID AT 25/2400Z)
----------------------------------------------------
               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