From: oler@rho.uleth.ca (Cary Oler)
Subject: Daily Summary of Solar Geophysical Activity for 10 October
Apparently-To: sci-space-news@ames.arc.nasa.gov
Followup-To: sci.space
Organization: University of Lethbridge
Date: Sun, 11 Oct 1992 05:02:26 GMT

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                 DAILY SUMMARY OF SOLAR GEOPHYSICAL ACTIVITY

                               10 OCTOBER, 1992

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                  (Based In-Part On SESC Observational Data)


SOLAR AND GEOPHYSICAL ACTIVITY INDICES FOR 10 OCTOBER
-----------------------------------------------------

NOTE:  Yesterdays (09 Oct 92) 10.7 cm solar radio flux was 121.3 sfu.

!!BEGIN!! (1.0) S.T.D. Solar Geophysical Data Broadcast for DAY 284, 10/10/92
10.7 FLUX=112.5  90-AVG=120        SSN=121      BKI=0043 2213  BAI=009
BGND-XRAY=B2.6     FLU1=8.3E+04  FLU10=1.0E+04  PKI=1133 3223  PAI=009
  BOU-DEV=004,004,040,030,016,014,008,024   DEV-AVG=017 NT     SWF=01:005
 XRAY-MAX= M2.1   @ 0720UT    XRAY-MIN= B2.1   @ 2310UT   XRAY-AVG= B6.7
NEUTN-MAX= +002%  @ 1610UT   NEUTN-MIN= -003%  @ 0920UT  NEUTN-AVG= -0.4%
  PCA-MAX= -2.9DB @ 0525UT     PCA-MIN= -3.7DB @ 1405UT    PCA-AVG= -3.2DB
BOUTF-MAX=55427NT @ 1338UT   BOUTF-MIN=55398NT @ 1811UT  BOUTF-AVG=55417NT
GOES7-MAX=P:+105NT@ 1837UT   GOES7-MIN=N:-011NT@ 0759UT  G7-AVG=+074,+040,+009
GOES6-MAX=P:+111NT@ 1829UT   GOES6-MIN=E:-023NT@ 1443UT  G6-AVG=+083,-013,+032
 FLUXFCST=STD:110,110,110;SESC:110,110,110 BAI/PAI-FCST=010,010,015/010,010,015
    KFCST=1234 5321 1234 5321  27DAY-AP=008,009   27DAY-KP=2222 2233 2323 2232
 WARNINGS=*SWF
   ALERTS=**MINFLR:M2.1/1B@0720,S08W11(7306)
!!END-DATA!!


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

     Solar activity became moderate today by virtue of a single class M2.1/1B
flare from Region 7306 (S08W17).  The flare occurred near the intermediate
spots where a delta configuration exists.  The event was not associated with
any notable radio or sweep events.  Minor growth may have occurred in this
region over the last 24 hours.  It proved to be the most active group on the
visible disk.

     Region 7303 (S13W61) continued to slowly decay and simplify and became
relatively quiet today.  It may support a few C-class flares before rotating
off the disk.

     No new regions were numbered.

     Solar activity will continue low to moderate.  M-class flares remain
possible in Region 7306.  C-class flares are possible in Regions 7306 and
7303.

     The geomagnetic field was unsettled over the last 24 hours.  The field
is expected to continue mostly unsettled.  Active periods may be possible on
12 or 13 October.

     HF propagation conditions were near-normal to slightly below-normal over
most regions. Conditions are expected to continue near-normal with periods of
below-normal propagation over the higher latitude paths on 12 and/or 13
October.


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

REGIONS WITH SUNSPOTS (LOCATIONS VALID AT 10/2400Z)
---------------------------------------------------
NMBR LOCATION  LO  AREA  Z   LL   NN MAG TYPE
7298  N17W81  346  0110 DSO  09  003 BETA
7301  S16W68  333  0010 BXO  10  005 BETA
7303  S13W61  326  0100 DSO  09  009 BETA
7305  N11W38  303  0030 CSO  03  003 BETA
7306  S08W17  282  0140 DAI  08  024 BETA-GAMMA-DELTA
7307  S16E27  238  0010 BXO  06  005 BETA
7308  N09W07  272  0000 AXX  01  002 ALPHA
7299  N13W67  332                    PLAGE
7300  N14W44  309                    PLAGE
REGIONS DUE TO RETURN 11 OCTOBER TO 13 OCTOBER
NMBR LAT    LO
7287 N08   169
7283 S15   166
7288 S17   151


LISTING OF SOLAR ENERGETIC EVENTS FOR 10 OCTOBER
------------------------------------------------
BEGIN  MAX  END  RGN   LOC   XRAY  OP 245MHZ 10CM   SWEEP SWF
 0710 0720 0739 7306  S08W11 M2.1  1B


POSSIBLE CORONAL MASS EJECTION EVENTS FOR 10 OCTOBER
----------------------------------------------------
           UT TIME                 OPTICAL          XRAY    RADIO
 BEGIN        MAX      END     LOCATION   TYPE   SIZE  DUR  II IV
NO EVENTS OBSERVED


INFERRED CORONAL HOLES (LOCATIONS VALID AT 10/2400Z)
----------------------------------------------------
               ISOLATED HOLES AND POLAR EXTENSIONS
      EAST   SOUTH  WEST   NORTH  CAR  TYPE  POL  AREA   OBSN
60   N21W29 N11W32 N20W34 N23W32  319  ISO   POS   000 10830A
61   N32E58 N23E26 N35E18 N41E38  234  ISO   POS   015 10830A

NOTE: The southern polar coronal hole has an extension to S29 presently at
      the central meridian as inferred by Helium 10830A observations.

**  End of Daily Report  **