:Product: 19970824RSGA.txt :Issued: 1997 Aug 24 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 236 ISSUED AT 2200Z ON 24 AUG 1997 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 23/2100Z TO 24/2100Z: SOLAR ACTIVITY WAS VERY LOW. THE VISIBLE DISK IS CURRENTLY SPOTLESS. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 23/2100Z TO 24/2100Z: THE GEOMAGNETIC FIELD HAS BEEN QUIET AT ALL LATITUDES FOR THE PAST 24 HOURS, EXCEPT FOR AN ISOLATED PERIOD OF UNSETTLED CONDITIONS RECORDED AT FREDERICKSBURG DURING THE INTERVAL 24/0000-0300Z. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE MOSTLY QUIET FOR THE NEXT 48 HOURS, WITH ACTIVITY INCREASING TO MOSTLY UNSETTLED ON DAY THREE DUE TO RECURRENT ACTIVITY. III. EVENT PROBABILITIES 25 AUG-27 AUG CLASS M 01/01/01 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 24 AUG 078 PREDICTED 25 AUG-27 AUG 077/077/077 90 DAY MEAN 24 AUG 073 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 23 AUG 004/004 ESTIMATED AFR/AP 24 AUG 006/005 PREDICTED AFR/AP 25 AUG-27 AUG 005/005-005/005-010/012 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 25 AUG-27 AUG A. MIDDLE LATITUDES ACTIVE 15/15/20 MINOR STORM 05/05/10 MAJOR-SEVERE STORM 01/01/01 B. HIGH LATITUDES ACTIVE 15/15/20 MINOR STORM 05/05/10 MAJOR-SEVERE STORM 01/01/01