:Product: 19971112RSGA.txt :Issued: 1997 Nov 12 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 316 ISSUED AT 2200Z ON 12 NOV 1997 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 11/2100Z TO 12/2100Z: SOLAR ACTIVITY WAS LOW. THREE C-CLASS X-RAY EVENTS OCCURRED DURING THE PAST 24 HOURS, MOSTLY LIKELY FROM REGION 8106 (N28W56), ALTHOUGH NONE WERE OPTICALLY CORRELATED. WITH THE WEST LIMB DEPARTURE OF REGION 8103 (N20W93), REGION 8106 IS CURRENTLY THE ONLY ACTIVE REGION ON THE VISIBLE DISK. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO REMAIN VERY LOW TO LOW, WITH THE CHANCE FOR CONTINUED ISOLATED C-CLASS EVENTS FROM REGION 8106. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 11/2100Z TO 12/2100Z: THE GEOMAGNETIC FIELD HAS BEEN QUIET AT ALL LATITUDES FOR THE PAST 24 HOURS. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE MOSTLY QUIET, WITH THE CHANCE FOR ISOLATED PERIODS OF UNSETTLED CONDITIONS, FOR THE NEXT THREE DAYS. III. EVENT PROBABILITIES 13 NOV-15 NOV CLASS M 01/01/01 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 12 NOV 087 PREDICTED 13 NOV-15 NOV 086/085/085 90 DAY MEAN 12 NOV 090 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 11 NOV 006/006 ESTIMATED AFR/AP 12 NOV 005/008 PREDICTED AFR/AP 13 NOV-15 NOV 005/008-005/005-005/008 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 13 NOV-15 NOV 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