:Product: 19970823RSGA.txt :Issued: 1997 Aug 23 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 235 ISSUED AT 2200Z ON 23 AUG 1997 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 22/2100Z TO 23/2100Z: SOLAR ACTIVITY WAS VERY LOW. A LONG DURATION B3 X-RAY EVENT WAS RECORDED AT AN UNSPECIFIED LOCATION DURING THE INTERVAL 23/1413-1456Z. REGION 8073 (N13W85), THE ONLY ACTIVE REGION ON THE VISIBLE DISK, IS QUIETLY ROTATING AROUND THE WEST LIMB AS A SINGLE SPOT 'AXX' GROUP. OLD REGION 8069 APPEARS TO BE RETURNING AROUND THE EAST LIMB, WITH IT'S CURRENT CHARACTERISTICS AND INTENSITY AS YET UNDEFINED. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 22/2100Z TO 23/2100Z: THE GEOMAGNETIC FIELD HAS BEEN QUIET AT ALL LATITUDES FOR THE PAST 24 HOURS. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE MOSTLY QUIET FOR THE NEXT THREE DAYS, WITH THE CHANCE FOR ISOLATED PERIODS OF UNSETTLED CONDITIONS. III. EVENT PROBABILITIES 24 AUG-26 AUG CLASS M 01/01/01 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 23 AUG 076 PREDICTED 24 AUG-26 AUG 075/075/075 90 DAY MEAN 23 AUG 073 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 22 AUG 008/007 ESTIMATED AFR/AP 23 AUG 004/004 PREDICTED AFR/AP 24 AUG-26 AUG 005/005-005/005-005/005 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 24 AUG-26 AUG A. MIDDLE LATITUDES ACTIVE 15/15/15 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/01 B. HIGH LATITUDES ACTIVE 15/15/15 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/01