From: oler@rho.uleth.ca (Cary Oler)
Subject: Daily Summary of Solar Geophysical Activity for 31 August
Apparently-To: sci-space-news@ames.arc.nasa.gov
Followup-To: sci.space
Organization: University of Lethbridge
Date: Tue, 1 Sep 1992 07:44:41 GMT

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                 DAILY SUMMARY OF SOLAR GEOPHYSICAL ACTIVITY

                               31 AUGUST, 1992

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                  (Based In-Part On SESC Observational Data)


SOLAR AND GEOPHYSICAL ACTIVITY INDICES FOR 31 AUGUST
----------------------------------------------------

!!BEGIN!! (1.0) S.T.D. Solar Geophysical Data Broadcast for DAY 244, 08/31/92
10.7 FLUX=097.2  90-AVG=124        SSN=051      BKI=1311 1111  BAI=004
BGND-XRAY=B1.3     FLU1=5.8E+05  FLU10=1.7E+04  PKI=1321 2222  PAI=007
  BOU-DEV=006,034,006,007,006,005,005,006   DEV-AVG=009 NT     SWF=00:000
 XRAY-MAX= B2.6   @ 1309UT    XRAY-MIN= B1.0   @ 0548UT   XRAY-AVG= B1.4
NEUTN-MAX= +003%  @ 1410UT   NEUTN-MIN= -001%  @ 2150UT  NEUTN-AVG= +0.7%
  PCA-MAX= +0.1DB @ 1655UT     PCA-MIN= -0.1DB @ 2145UT    PCA-AVG= -0.0DB
BOUTF-MAX=55446NT @ 0508UT   BOUTF-MIN=55396NT @ 1707UT  BOUTF-AVG=55431NT
GOES7-MAX=P:+111NT@ 1643UT   GOES7-MIN=N:+001NT@ 0359UT  G7-AVG=+089,+038,+012
GOES6-MAX=N:+645NT@ 1823UT   GOES6-MIN=E:-019NT@ 1509UT  G6-AVG=+100,-013,+028
 FLUXFCST=STD:100,100,105;SESC:100,100,105 BAI/PAI-FCST=005,010,020/007,010,025
    KFCST=2222 2222 2224 4222  27DAY-AP=013,043   27DAY-KP=3112 3443 6665 4433
 WARNINGS=
   ALERTS=
!!END-DATA!!


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

     Solar activity was very low today.  Region 7270 (S09E40) continued to
produce numerous small subflares with very weak B-class x-rays.

     Slight growth was noted in Region 7270, although the region is still
very simple and small.  B-class subflares should persist with a chance for an
isolated C-class event.

     Region 7271 (S09E27) was the only new region assigned today.

     Solar activity should continue mostly very low.  A C-class flare may be
observed from Region 7270, although most of the activity should remain
confined to the lower B-class levels.

     The geomagnetic field was quiet to unsettled over the last 24 hours.
Generally quiet conditions should persist for the next 48 hours.  A well
placed coronal hole which previously produced storm conditions should begin
enhancing levels of activity by 03 September.  The last solar rotation saw
periods of minor to major storming, although that disturbance may have been
enhanced by other factors aside from the coronal stream.  Generally active
to minor storm level conditions could accompany the disturbance near 03
September.

     HF propagation conditions were near-normal over all regions.  Similar
conditions can be expected over the next 48 hours.  By 03 September, an
enhancement in levels of geomagnetic activity could begin to degrade polar
and high latitude signal paths.


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

REGIONS WITH SUNSPOTS (LOCATIONS VALID AT 31/2400Z)
---------------------------------------------------
NMBR LOCATION  LO  AREA  Z   LL   NN MAG TYPE
7267  N02W44  117  0020 BXO  06  007 BETA
7270  S09E40  033  0070 CSO  06  011 BETA
7271  S09E27  046  0010 BXO  03  003 BETA
7269  S18W68  141                    PLAGE
REGIONS DUE TO RETURN 01 SEPTEMBER TO 03 SEPTEMBER
NMBR LAT    LO
7262 N17   315
7256 S15   308


LISTING OF SOLAR ENERGETIC EVENTS FOR 31 AUGUST
-----------------------------------------------
BEGIN  MAX  END  RGN   LOC   XRAY  OP 245MHZ 10CM   SWEEP SWF
NO EVENTS OBSERVED


POSSIBLE CORONAL MASS EJECTION EVENTS FOR 31 AUGUST
---------------------------------------------------
           UT TIME                 OPTICAL          XRAY    RADIO
 BEGIN        MAX      END     LOCATION   TYPE   SIZE  DUR  II IV
NO EVENTS OBSERVED


INFERRED CORONAL HOLES (LOCATIONS VALID AT 31/2400Z)
----------------------------------------------------
               ISOLATED HOLES AND POLAR EXTENSIONS
      EAST   SOUTH  WEST   NORTH  CAR  TYPE  POL  AREA   OBSN
52   N17E24 S15E01 S04W09 N17E24  071  ISO   POS   012 10830A


**  End of Daily Report  **
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