:Product: 19970815RSGA.txt :Issued: 1997 Aug 15 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 227 ISSUED AT 2200Z ON 15 AUG 1997 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 14/2100Z TO 15/2100Z: SOLAR ACTIVITY WAS VERY LOW. NEW REGION 8075 (N29E46) WAS NUMBERED TODAY. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW THROUGHOUT THE FORECAST PERIOD. THERE REMAINS A SLIGHT CHANCE OF AN ISOLATED C-CLASS EVENT. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 14/2100Z TO 15/2100Z: THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED. THE GREATER THAN 2 MEV ELECTRON FLUX HAS BEEN AT MODERATE TO HIGH FLUX LEVELS SINCE 15/1259Z. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET TO UNSETTLED THE FIRST DAY OF THE FORECAST WITH QUIET CONDITIONS EXPECTED THE REMAINDER OF THE FORECAST PERIOD. III. EVENT PROBABILITIES 16 AUG-18 AUG CLASS M 05/05/05 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 15 AUG 078 PREDICTED 16 AUG-18 AUG 076/075/075 90 DAY MEAN 15 AUG 073 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 14 AUG 018/017 ESTIMATED AFR/AP 15 AUG 010/010 PREDICTED AFR/AP 16 AUG-18 AUG 010/005-005/005-005/005 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 16 AUG-18 AUG A. MIDDLE LATITUDES ACTIVE 20/20/20 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/01 B. HIGH LATITUDES ACTIVE 25/25/25 MINOR STORM 10/10/10 MAJOR-SEVERE STORM 05/05/05