:Product: 19971202RSGA.txt :Issued: 1997 Dec 02 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 336 ISSUED AT 2200Z ON 02 DEC 1997 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 01/2100Z TO 02/2100Z: SOLAR ACTIVITY WAS LOW. REGION 8113 (N20W03) HAS GENERATED ONLY MINOR C-CLASS EVENTS DURING THE PAST 24 HOURS, THE MOST RECENT A C1/SF AT 02/1632Z. ALTHOUGH THE REGION'S MAGNETIC STRUCTURE NOW APPEARS FAIRLY DISORGANIZED, IT CONTINUES AS A SIGNIFICANT 'EKI' BETA-GAMMA GROUP WITH AS MANY AS 60 SPOTS. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE MODERATE. REGION 8113 MAINTAINS THE POTENTIAL FOR MINOR M-CLASS ACTIVITY, AS WELL AS AN OUTSIDE CHANCE FOR AN ISOLATED MAJOR FLARE. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 01/2100Z TO 02/2100Z: THE GEOMAGNETIC FIELD HAS BEEN QUIET FOR THE PAST 24 HOURS. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE MOSTLY QUIET, WITH ISOLATED PERIODS OF UNSETTLED CONDITIONS, FOR THE NEXT THREE DAYS. III. EVENT PROBABILITIES 03 DEC-05 DEC CLASS M 50/50/50 CLASS X 05/05/05 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 02 DEC 112 PREDICTED 03 DEC-05 DEC 115/115/110 90 DAY MEAN 02 DEC 094 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 01 DEC 003/003 ESTIMATED AFR/AP 02 DEC 004/005 PREDICTED AFR/AP 03 DEC-05 DEC 008/005-008/005-005/005 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 03 DEC-05 DEC A. MIDDLE LATITUDES ACTIVE 15/15/15 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/01 B. HIGH LATITUDES ACTIVE 15/15/15 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/01