:Product: 19971022RSGA.txt :Issued: 1997 Oct 22 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 ********** CORRECTED COPY ********** SDF NUMBER 295 ISSUED AT 2200Z ON 22 OCT 1997 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 21/2100Z TO 22/2100Z: SOLAR ACTIVITY WAS VERY LOW. REGION 8097 (N16W14) IS CURRENTLY THE ONLY SPOTTED REGION ON THE VISIBLE DISK AND HAS REMAINED STABLE SINCE YESTERDAY'S C3/SF EVENT. A NEW REGION MAY BE EMERGING NEAR S24E30. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 21/2100Z TO 22/2100Z: THE GEOMAGNETIC FIELD HAS BEEN MOSTLY QUIET FOR THE PAST 24 HOURS, WITH THE EXCEPTION OF TWO PERIODS OF UNSETTLED CONDITIONS RECORDED AT FREDERICKSBURG DURING THE INTERVAL 22/0000-0600Z. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE MOSTLY QUIET WITH ISOLATED PERIODS OF UNSETTLED CONDITIONS FOR THE NEXT TWO DAYS. EXPECT UNSETTLED TO ACTIVE CONDITIONS TO DEVELOP ON DAY THREE DUE TO THE EFFECTS OF YESTERDAY'S LONG DURATION C3/SF AND ASSOCIATED HALO CME EVENT. III. EVENT PROBABILITIES 23 OCT-25 OCT CLASS M 01/01/01 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 22 OCT 081 PREDICTED 23 OCT-25 OCT 081/079/078 90 DAY MEAN 22 OCT 086 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 21 OCT 003/004 ESTIMATED AFR/AP 22 OCT 006/005 PREDICTED AFR/AP 23 OCT-25 OCT 005/008-015/020-025/030 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 23 OCT-25 OCT A. MIDDLE LATITUDES ACTIVE 15/20/40 MINOR STORM 05/05/20 MAJOR-SEVERE STORM 01/01/05 B. HIGH LATITUDES ACTIVE 15/25/50 MINOR STORM 05/10/25 MAJOR-SEVERE STORM 01/05/10