:Product: 19960609RSGA.txt :Issued: 1996 Jun 09 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 161 ISSUED AT 2200Z ON 09 JUN 1996 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 08/2100Z TO 09/2100Z: SOLAR ACTIVITY WAS VERY LOW. NEW REGION 7971 (S07W42), A TWO SPOT 'BXO' GROUP, WAS NUMBERED TODAY. REGION 7968 (N02W42) PRODUCED TWO B-CLASS EVENTS, THE LARGEST A B7 AT 09/0910Z, WHICH WERE BOTH OPTICALLY CORRELATED AS SUBFLARES. REGION 7968 HAS LOST A NUMBER OF SPOTS SINCE YESTERDAY, BUT ITS OVERALL SIZE HAS REMAINED FAIRLY CONSTANT, AND IS CURRENTLY A 'CAO' GROUP WITH 12 SPOTS. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW, ALTHOUGH REGION 7968 REMAINS ACTIVE WITH A 40% CHANCE OF GENERATING A C-CLASS EVENT AND 10% CHANCE OF GENERATING AN M-CLASS EVENT. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 08/2100Z TO 09/2100Z: THE GEOMAGNETIC FIELD HAS BEEN AT QUIET LEVELS AT ALL LATITUDES FOR THE PAST 24 HOURS. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET TO UNSETTLED FOR THE NEXT THREE DAYS, WITH AN INCREASED CHANCE OF ISOLATED PERIODS OF ACTIVE CONDITIONS ON DAYS TWO AND THREE. III. EVENT PROBABILITIES 10 JUN-12 JUN CLASS M 10/10/05 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 09 JUN 070 PREDICTED 10 JUN-12 JUN 071/070/070 90 DAY MEAN 09 JUN 070 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 08 JUN 006/005 ESTIMATED AFR/AP 09 JUN 006/005 PREDICTED AFR/AP 10 JUN-12 JUN 010/010-010/010-010/010 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 10 JUN-12 JUN A. MIDDLE LATITUDES ACTIVE 20/20/20 MINOR STORM 10/10/10 MAJOR-SEVERE STORM 05/05/05 B. HIGH LATITUDES ACTIVE 20/20/20 MINOR STORM 10/10/10 MAJOR-SEVERE STORM 05/05/05