From: oler@rho.uleth.ca (Cary Oler)
Subject: Daily Summary of Solar Geophysical Activity for 11 April
Apparently-To: sci-space-news@ames.arc.nasa.gov
Followup-To: sci.space
Organization: University of Lethbridge
Date: Sun, 12 Apr 1992 07:13:39 GMT

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

                  DAILY SUMMARY OF SOLAR GEOPHYSICAL ACTIVITY

                                11 APRIL, 1992

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

                  (Based In-Part On SESC Observational Data)


SOLAR AND GEOPHYSICAL ACTIVITY INDICES FOR 11 APRIL
---------------------------------------------------

!!BEGIN!! (1.0) S.T.D. Solar Geophysical Data Broadcast for DAY 102, 04/11/92
10.7 FLUX=143.3  90-AVG=194        SSN=084      BKI=2110 1120  BAI=003
BGND-XRAY=B4.0     FLU1=1.7E+06  FLU10=9.6E+03  PKI=1111 2212  PAI=005
  BOU-DEV=010,006,007,004,006,007,010,003   DEV-AVG=004 NT     SWF=00:000
 XRAY-MAX= C1.3   @ 0048UT    XRAY-MIN= B3.8   @ 1004UT   XRAY-AVG= B5.2
NEUTN-MAX= +003%  @ 0810UT   NEUTN-MIN= -002%  @ 0405UT  NEUTN-AVG= +0.1%
  PCA-MAX= +0.1DB @ 2245UT     PCA-MIN= -1.0DB @ 2300UT    PCA-AVG= -0.0DB
BOUTF-MAX=55279NT @ 1452UT   BOUTF-MIN=55241NT @ 1853UT  BOUTF-AVG=55266NT
GOES7-MAX=P:+110NT@ 2203UT   GOES7-MIN=N:+003NT@ 0419UT  G7-AVG=+091,+036,+010
GOES6-MAX=P:+126NT@ 2205UT   GOES6-MIN=E:-020NT@ 1905UT  G6-AVG=+103,-002,+025
 FLUXFCST=STD:145,145,145;SESC:145,145,145 BAI/PAI-FCST=007,010,015/012,012,012
    KFCST=2243 2211 2225 4221  27DAY-AP=009,013   27DAY-KP=2123 2322 2223 3343
 WARNINGS=
   ALERTS=
!!END-DATA!!


BRIEF SUMMARY OF EVENTS
-----------------------

     Solar activity continued low.  Only a few subflares have been observed
over the last 24 hours.  The six simple regions visible on the disk have
remained stable and quiet.

     A filament centered near S01W40 (at 14:00 UT) disappeared sometime prior
to 14:00 UT.  Another filament centered near N04W22 also apparently erupted
sometime prior to 16:52 UT.  These events are not expected to have a
terrestrial impact.

     New Region 7130 (S24E75) rotated into view today as a very simple A-type
spot group.  This region is fairly close to where old Region 7119 was due to
return.  Old Region 7119 was born on the disk on 26 March near the west limb.
Prior to its departure, it remained simple and small.  It only managed to
produce 2 small subfaint flares that had no measurable soft x-ray signatures.

     Minor surging was reported again on the east limb near S31.  There are
no regions expected to return near this location, so it appears as though the
responsible source formed on the far side of the sun.

     Solar activity is expected to be low to possibly very low.  There is
virtually no chance for M-class flare activity at this time.  There is a fair
possibility for a weak low-level C-class flare, although most of the activity
(what little there is right now) will remain at B-class levels.

     The geomagnetic field was quiet and stable over all regions.  Conditions
are expected to remain quiet over the next 24 hours, possibly trending
towards unsettled levels by 14 April if recurrence is accurate.

     HF propagation conditions were normal over all regions.  A few fairly
weak transatlantic openings on 10 meters were reported from eastern North
American regions.  No strong openings on 10 meters are expected at this time.
Overall propagation conditions are expected to continue normal over all
regions.


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