:Product: 19970325RSGA.txt :Issued: 1997 Mar 25 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 084 ISSUED AT 2200Z ON 25 MAR 1997 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 24/2100Z TO 25/2100Z: THE DISK REMAINED SPOTLESS AND SOLAR ACTIVITY CONTINUED AT A VERY LOW LEVEL. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY SHOULD CONTINUE AT A VERY LOW LEVEL FOR THE NEXT THREE DAYS. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 24/2100Z TO 25/2100Z: THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED. RECENT SOLAR WIND DATA INDICATE THAT THE EXPECTED CORONAL HOLE RELATED STREAM HAS NOT YET REACHED EARTH. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS FORECAST TO BE GENERALLY UNSETTLED TO ACTIVE ON 26-27 MAR. ISOLATED MINOR STORM CONDITIONS ARE POSSIBLE DURING THAT PERIOD. QUIET TO UNSETTLED LEVELS ARE EXPECTED TO RETURN ON 28 MAR. III. EVENT PROBABILITIES 26 MAR-28 MAR CLASS M 01/01/01 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 25 MAR 071 PREDICTED 26 MAR-28 MAR 071/071/071 90 DAY MEAN 25 MAR 074 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 24 MAR 008/006 ESTIMATED AFR/AP 25 MAR 011/008 PREDICTED AFR/AP 26 MAR-28 MAR 015/015-020/020-010/010 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 26 MAR-28 MAR A. MIDDLE LATITUDES ACTIVE 25/30/15 MINOR STORM 15/15/10 MAJOR-SEVERE STORM 05/05/01 B. HIGH LATITUDES ACTIVE 25/35/20 MINOR STORM 15/10/10 MAJOR-SEVERE STORM 05/05/05