:Product: 19971025RSGA.txt :Issued: 1997 Oct 25 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 298 ISSUED AT 2200Z ON 25 OCT 1997 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 24/2100Z TO 25/2100Z: SOLAR ACTIVITY WAS VERY LOW. THE VISIBLE DISK WAS GENERALLY QUIET. NEW REGION 8099 (N20E64) WAS NUMBERED TODAY. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO REMAIN VERY LOW FOR THE ENTIRE FORECAST PERIOD. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 24/2100Z TO 25/2100Z: THE GEOMAGNETIC FIELD WAS QUIET TO MINOR STORM AT ALL LATITUDES. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET TO MINOR STORM FOR THE NEXT 12-24 HOURS, THEN DIMINISH TO QUIET TO UNSETTLED FOR THE REMAINDER OF THE FORECAST PERIOD. III. EVENT PROBABILITIES 26 OCT-28 OCT CLASS M 01/01/01 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 25 OCT 081 PREDICTED 26 OCT-28 OCT 080/080/078 90 DAY MEAN 25 OCT 086 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 24 OCT 018/025 ESTIMATED AFR/AP 25 OCT 017/020 PREDICTED AFR/AP 26 OCT-28 OCT 020/025-015/015-010/010 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 26 OCT-28 OCT A. MIDDLE LATITUDES ACTIVE 45/25/15 MINOR STORM 10/05/05 MAJOR-SEVERE STORM 10/01/01 B. HIGH LATITUDES ACTIVE 45/25/15 MINOR STORM 15/05/05 MAJOR-SEVERE STORM 10/01/01