:Product: 19971003RSGA.txt :Issued: 1997 Oct 03 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 276 ISSUED AT 2200Z ON 03 OCT 1997 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 02/2100Z TO 03/2100Z: SOLAR ACTIVITY WAS VERY LOW. NO SIGNIFICANT FLARES OCCURRED. REGION 8091 (N25E47) HAS GROWN IN SIZE AND COMPLEXITY SINCE YESTERDAY, AND IS CURRENTLY 7-8 SPOT 'CSO' BETA GROUP. REGION 8090 (S27E28) REMAINS STABLE AS A SINGLE SPOT 'HSX' ALPHA. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 02/2100Z TO 03/2100Z: THE GEOMAGNETIC FIELD HAS BEEN MOSTLY QUIET FOR THE PAST 24 HOURS, WITH ISOLATED PERIODS OF UNSETTLED CONDITIONS. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET TO UNSETTLED FOR THE NEXT TWO DAYS, WITH ACTIVITY INCREASING TO MOSTLY UNSETTLED ON DAY THREE. III. EVENT PROBABILITIES 04 OCT-06 OCT CLASS M 01/01/01 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 03 OCT 086 PREDICTED 04 OCT-06 OCT 086/086/087 90 DAY MEAN 03 OCT 083 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 02 OCT 006/004 ESTIMATED AFR/AP 03 OCT 007/006 PREDICTED AFR/AP 04 OCT-06 OCT 005/008-010/008-015/015 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 04 OCT-06 OCT A. MIDDLE LATITUDES ACTIVE 10/15/20 MINOR STORM 01/05/10 MAJOR-SEVERE STORM 01/01/01 B. HIGH LATITUDES ACTIVE 10/15/20 MINOR STORM 01/05/10 MAJOR-SEVERE STORM 01/01/01