:Product: 19961118RSGA.txt :Issued: 1996 Nov 18 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 323 ISSUED AT 2200Z ON 18 NOV 1996 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 17/2100Z TO 18/2100Z: SOLAR ACTIVITY WAS VERY LOW. THE VISIBLE DISK REMAINS STABLE AND QUIET EXCEPT FOR A MINOR FILIMENT THAT DISAPPEARED IN REGION 7998. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 17/2100Z TO 18/2100Z: THE GEOMAGNETIC FIELD HAS BEEN AT QUIET TO ACTIVE LEVELS FOR THE PAST 24 HOURS. THE GREATER THAN 2 MEV ENERGETIC ELECTRONS REACHED HIGH LEVELS AT GEOSYNCHRONOUS ALTITUDE. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET TO ACTIVE FOR THE NEXT 24 HOURS AND THEN FALLING OFF TO QUIET TO UNSETTLED LEVELS. III. EVENT PROBABILITIES 19 NOV-21 NOV CLASS M 01/01/01 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 18 NOV 074 PREDICTED 19 NOV-21 NOV 074/074/074 90 DAY MEAN 18 NOV 070 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 17 NOV 012/012 ESTIMATED AFR/AP 18 NOV 015/015 PREDICTED AFR/AP 19 NOV-21 NOV 020/025-010/010-010/010 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 19 NOV-21 NOV A. MIDDLE LATITUDES ACTIVE 50/20/20 MINOR STORM 15/10/10 MAJOR-SEVERE STORM 05/05/05 B. HIGH LATITUDES ACTIVE 50/20/20 MINOR STORM 15/10/10 MAJOR-SEVERE STORM 05/05/05