:Product: 19960426RSGA.txt :Issued: 1996 Apr 26 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 117 ISSUED AT 2200Z ON 26 APR 1996 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 25/2100Z TO 26/2100Z: SOLAR ACTIVITY WAS VERY LOW. NO FLARES OCCURRED. A MINOR X-RAY ENHANCEMENT (LESS THAN B-CLASS) WHICH STARTED AT ABOUT 26/1330Z WAS ASSOCIATED WITH AN ACTIVE FILAMENT AND AN ENHANCED CORONAL STRUCTURE NEAR S02W14. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 25/2100Z TO 26/2100Z: THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED. THE GREATER THAN 2 MEV ELECTRON FLUX WAS MODERATE TO HIGH. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE MOSTLY QUIET. III. EVENT PROBABILITIES 27 APR-29 APR CLASS M 01/01/01 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 26 APR 068 PREDICTED 27 APR-29 APR 068/068/068 90 DAY MEAN 26 APR 071 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 25 APR 006/005 ESTIMATED AFR/AP 26 APR 006/005 PREDICTED AFR/AP 27 APR-29 APR 005/005-005/005-005/005 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 27 APR-29 APR A. MIDDLE LATITUDES ACTIVE 05/05/05 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/01 B. HIGH LATITUDES ACTIVE 05/05/05 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/01