:Product: 19971029RSGA.txt :Issued: 1997 Oct 29 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 302 ISSUED AT 2200Z ON 29 OCT 1997 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 28/2100Z TO 29/2100Z: SOLAR ACTIVITY WAS VERY LOW. BOTH SPOTTED REGIONS, 8099 (N20E11) AND 8100 (S21E44) WERE QUIET AND STABLE. NO SIGNIFICANT FLARE ACTIVITY OCCURRED. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE LOW. REGION 8100 IS LIKELY TO GENERATE OCCASIONAL C-CLASS ACTIVITY. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 28/2100Z TO 29/2100Z: THE GEOMAGNETIC FIELD WAS PREDOMINANTLY QUIET TO UNSETTLED. WEAK SUBSTORMS BROUGHT EPISODES OF ACTIVE CONDITIONS TO HIGH LATITUDES. THE GREATER THAN 2 MEV ELECTRON FLUX AT GEOSYNCHRONOUS ORBIT ONCE AGAIN REACHED HIGH LEVELS DURING THE LATTER PART OF THE PERIOD. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET TO UNSETTLED FOR THE NEXT THREE DAYS. III. EVENT PROBABILITIES 30 OCT-01 NOV CLASS M 05/05/05 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 29 OCT 087 PREDICTED 30 OCT-01 NOV 090/090/090 90 DAY MEAN 29 OCT 087 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 28 OCT 011/013 ESTIMATED AFR/AP 29 OCT 009/010 PREDICTED AFR/AP 30 OCT-01 NOV 010/015-010/010-005/008 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 30 OCT-01 NOV A. MIDDLE LATITUDES ACTIVE 20/20/10 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/01 B. HIGH LATITUDES ACTIVE 25/25/20 MINOR STORM 10/10/05 MAJOR-SEVERE STORM 01/01/01