:Product: 19970731RSGA.txt
:Issued: 1997 Jul 31 2200 UTC
# Prepared jointly by the U.S. Dept. of Commerce, NOAA,
# Space Environment Center and the U.S. Air Force.
#
JOINT USAF/NOAA REPORT OF SOLAR AND GEOPHYSICAL ACTIVITY
SDF NUMBER 212 ISSUED AT 2200Z ON 31 JUL 1997
IA.  ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM  30/2100Z
TO 31/2100Z:  SOLAR ACTIVITY WAS VERY LOW. THE SOLAR DISK IS
CURRENTLY SPOTLESS.
IB.  SOLAR ACTIVITY FORECAST:  SOLAR ACTIVITY IS EXPECTED TO BE VERY
LOW.
IIA.  GEOPHYSICAL ACTIVITY SUMMARY FROM 30/2100Z TO 31/2100Z:
THE GEOMAGNETIC FIELD RANGED FROM QUIET TO MINOR STORM LEVELS. MOST
ACTIVITY OCCURRED FROM ABOUT 31/0200-1000Z. THE SOURCE OF THE
ACTIVITY IS NOT CERTAIN BUT MAY BE THE RESULT OF A HIGH-SPEED
CORONAL HOLE STREAM.
IIB.  GEOPHYSICAL ACTIVITY FORECAST:  THE GEOMAGNETIC FIELD IS
EXPECTED TO BE UNSETTLED TO ACTIVE FOR THE DURATION OF THE FORECAST
PERIOD.
III.  EVENT PROBABILITIES 01 AUG-03 AUG
CLASS M    01/01/01
CLASS X    01/01/01
PROTON     01/01/01
PCAF       GREEN
IV.  PENTICTON 10.7 CM FLUX
OBSERVED           31 JUL 070
PREDICTED   01 AUG-03 AUG  070/070/070
90 DAY MEAN        31 JUL 073
V.  GEOMAGNETIC A INDICES
OBSERVED AFR/AP 30 JUL  008/007
ESTIMATED AFR/AP 31 JUL  015/022
PREDICTED AFR/AP 01 AUG-03 AUG  015/012-015/010-015/008
VI.  GEOMAGNETIC ACTIVITY PROBABILITIES 01 AUG-03 AUG
A.  MIDDLE LATITUDES
ACTIVE                20/20/20
MINOR STORM           10/10/10
MAJOR-SEVERE STORM    01/05/05
B.  HIGH LATITUDES
ACTIVE                30/30/30
MINOR STORM           10/10/10
MAJOR-SEVERE STORM    05/05/05