:Product: 19960921RSGA.txt :Issued: 1996 Sep 21 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 265 ISSUED AT 2200Z ON 21 SEP 1996 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 20/2100Z TO 21/2100Z: SOLAR ACTIVITY WAS VERY LOW. THERE WAS NO ACTIVITY OF SIGNIFICANCE. THE DISK REMAINS SPOTLESS. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 20/2100Z TO 21/2100Z: THE GEOMAGNETIC FIELD HAS BEEN AT UNSETTLED TO MINOR STORM LEVELS FOR THE PAST 24 HOURS. SOLAR WIND DATA CONTINUES TO SHOW A LOW DENSITY, HIGH SPEED STREAM. ENERGETIC ELECTRON FLUXES WERE AT HIGH LEVELS AT GEOSYNCHRONOUS ALTITUDES. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE UNSETTLED TO ACTIVE FOR THE ENTIRE FORECAST PERIOD. III. EVENT PROBABILITIES 22 SEP-24 SEP CLASS M 01/01/01 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 21 SEP 070 PREDICTED 22 SEP-24 SEP 070/072/072 90 DAY MEAN 21 SEP 071 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 20 SEP 037/031 ESTIMATED AFR/AP 21 SEP 024/025 PREDICTED AFR/AP 22 SEP-24 SEP 015/020-015/015-015/015 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 22 SEP-24 SEP A. MIDDLE LATITUDES ACTIVE 30/30/30 MINOR STORM 15/15/15 MAJOR-SEVERE STORM 05/05/05 B. HIGH LATITUDES ACTIVE 30/30/30 MINOR STORM 15/15/15 MAJOR-SEVERE STORM 05/05/05