:Product: 19960412RSGA.txt :Issued: 1996 Apr 12 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 103 ISSUED AT 2200Z ON 12 APR 1996 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 11/2100Z TO 12/2100Z: SOLAR ACTIVITY WAS VERY LOW. THERE WAS NO FLARE ACTIVITY. NEW REGION 7956 (N08E35) WAS NUMBERED TODAY. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 11/2100Z TO 12/2100Z: THE GEOMAGNETIC FIELD HAS BEEN AT UNSETTLED TO ACTIVE LEVELS FOR THE PAST 24 HOURS AT MIDDLE LATITUDES. HIGH LATITUDES EXPERIENCED QUIET TO SEVERE STORMING. CAUSE OF THE CURRENT ACTIVITY IS UNKNOWN. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE UNSETTLED TO ACTIVE FOR THE NEXT 18 HOURS. THE FIELD IS EXPECTED TO BE MOSTLY UNSETTLED AFTER THAT. III. EVENT PROBABILITIES 13 APR-15 APR CLASS M 01/01/01 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 12 APR 068 PREDICTED 13 APR-15 APR 070/070/070 90 DAY MEAN 12 APR 071 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 11 APR 010/008 ESTIMATED AFR/AP 12 APR 021/020 PREDICTED AFR/AP 13 APR-15 APR 015/013-010/010-015/010 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 13 APR-15 APR A. MIDDLE LATITUDES ACTIVE 20/15/25 MINOR STORM 10/10/15 MAJOR-SEVERE STORM 05/05/05 B. HIGH LATITUDES ACTIVE 25/20/30 MINOR STORM 15/15/20 MAJOR-SEVERE STORM 05/05/05