From: oler@rho.uleth.ca (Cary Oler)
Subject: Daily Summary of Solar Geophysical Activity for 25 July
Apparently-To: sci-space-news@ames.arc.nasa.gov
Followup-To: sci.space
Organization: University of Lethbridge
Date: Sun, 26 Jul 1992 06:59:47 GMT

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                  DAILY SUMMARY OF SOLAR GEOPHYSICAL ACTIVITY

                                25 JULY, 1992

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                  (Based In-Part On SESC Observational Data)


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

!!BEGIN!! (1.0) S.T.D. Solar Geophysical Data Broadcast for DAY 207, 07/25/92
10.7 FLUX=098.4  90-AVG=127        SSN=051      BKI=2012 3332  BAI=008
BGND-XRAY=B2.0     FLU1=3.0E+05  FLU10=1.1E+04  PKI=3222 3432  PAI=012
  BOU-DEV=010,004,009,013,021,033,026,014   DEV-AVG=016 NT     SWF=00:000
 XRAY-MAX= B9.2   @ 1202UT    XRAY-MIN= B1.7   @ 2300UT   XRAY-AVG= B2.4
NEUTN-MAX= +003%  @ 2250UT   NEUTN-MIN= -001%  @ 2025UT  NEUTN-AVG= +0.4%
  PCA-MAX= +0.2DB @ 1710UT     PCA-MIN= -1.1DB @ 1205UT    PCA-AVG= -0.0DB
BOUTF-MAX=55243NT @ 1448UT   BOUTF-MIN=55212NT @ 1732UT  BOUTF-AVG=55233NT
GOES7-MAX=P:+146NT@ 1908UT   GOES7-MIN=N:-016NT@ 0804UT  G7-AVG=+089,+044,+010
GOES6-MAX=P:+154NT@ 1908UT   GOES6-MIN=E:-014NT@ 1508UT  G6-AVG=+100,+004,+034
 FLUXFCST=STD:100,104,107;SESC:100,100,105 BAI/PAI-FCST=010,010,010/010,010,010
    KFCST=2234 3222 2234 4322  27DAY-AP=020,045   27DAY-KP=2255 4323 4754 5345
 WARNINGS=
   ALERTS=
!!END-DATA!!


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

     Solar activity continued very low.  Flare activity was almost
non-existent.  A few minor subflares were observed during the day, although
nothing made it to C-class levels.  The background x-ray flux continued to
gradually drop and is presently below B2 levels.

     Region 7238 (S21E57) appears to be capable of producing C-class flare
activity, but has been generally dormant since it appeared on the east limb.
Nothing more energetic than small C-class flares are expected from this spot
group, which is presently the largest simple region visible.

     New Region 7239 (S13W21) was numbered today.

     Solar activity is expected to continue very low to low.  It does not
look as though old Region 7216 is going to appear on the east limb in a form
capable of influencing levels of activity.  Unless an unexpected new region
rotates into view, very little activity is expected over the next several
days.

     The geomagnetic field was mostly quiet to unsettled.  High latitudes
observed a mild active period between 15:00 UT and 18:00 UT.  The field is
expected to continue mostly quiet to mildly unsettled.

     HF propagation conditions were near-normal over all regions.  No
significant changes are expected over the next 72 hours.  Fairly stable
global propagation should persist over the next 24 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
7232  N15W53  255  0020 CRO  05  004 BETA
7236  N18W45  247  0010 HRX  01  001 ALPHA
7238  S21E57  145  0250 DSO  10  004 BETA
7239  S13W21  223  0000 AXX  01  002 ALPHA
7230  S14W85  287                    PLAGE
REGIONS DUE TO RETURN 26 JULY TO 28 JULY
NMBR LAT    LO
7223 S12   093


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


POSSIBLE CORONAL MASS EJECTION EVENTS FOR 25 JULY
-------------------------------------------------
           UT TIME                 OPTICAL          XRAY    RADIO
 BEGIN        MAX      END     LOCATION   TYPE   SIZE  DUR  II IV
25/B0211             A1622       S00E19   DSF


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  **