:Product: 19971126RSGA.txt :Issued: 1997 Nov 26 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 330 ISSUED AT 2200Z ON 26 NOV 1997 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 25/2100Z TO 26/2100Z: SOLAR ACTIVITY WAS MODERATE DUE TO AN M2/SF FLARE AT 26/1837Z IN NEW REGION 8113 (N20E77). THIS REGION IS STILL COMING INTO VIEW AS IT ROTATES AROUND THE EAST LIMB BUT APPEARS TO BE A MODERATELY SIZED E-TYPE SUNSPOT GROUP. IT HAS ALSO GENERATED SEVERAL C-CLASS FLARES SINCE YESTERDAY. OTHER DISK REGIONS WERE RELATIVELY QUIET. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE MODERATE. ANOTHER M-CLASS FLARE IS PROBABLE FROM REGION 8113. C-CLASS ACTIVITY SHOULD CONTINUE. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 25/2100Z TO 26/2100Z: THE GEOMAGNETIC FIELD WAS QUIET. THE GREATER THAN 2 MEV ELECTRON FLUX WAS HIGH. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET. III. EVENT PROBABILITIES 27 NOV-29 NOV CLASS M 40/40/40 CLASS X 05/05/05 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 26 NOV 108 PREDICTED 27 NOV-29 NOV 110/115/115 90 DAY MEAN 26 NOV 093 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 25 NOV 003/003 ESTIMATED AFR/AP 26 NOV 004/005 PREDICTED AFR/AP 27 NOV-29 NOV 005/005-005/005-005/005 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 27 NOV-29 NOV A. MIDDLE LATITUDES ACTIVE 10/10/10 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/01 B. HIGH LATITUDES ACTIVE 10/10/10 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/01