:Product: 19971114RSGA.txt :Issued: 1997 Nov 14 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 318 ISSUED AT 2200Z ON 14 NOV 1997 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 13/2100Z TO 14/2100Z: SOLAR ACTIVITY HAS BEEN LOW. REGION 8108 (N19E67) PRODUCED TWO C-CLASS FLARES TODAY. THE LARGEST WAS A C4/SF LONG DURATION EVENT AT 14/1038Z. SPACE-BASED SENSORS DETECTED A CORONAL MASS EJECTION PARTIAL HALO EVENT OFF THE NE LIMB THAT CAN BE CORRELATED WITH THIS EVENT. THE OTHER EVENT WAS A C3/SF FLARE WITH AN ASSOCIATED TYPE II SWEEP AT 14/0131Z. THIS REGION CONTINUES TO GROW AS IT ROTATES ONTO THE VISIBLE DISK. AN UNCORRELATED C1 EVENT WAS ALSO DETECTED AT 14/0713Z. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO REMAIN LOW. REGION 8108 HAS A GOOD CHANCE OF CONTINUED C-CLASS X-RAY FLARE PRODUCTION AND AN OUTSIDE CHANCE OF PRODUCING ISOLATED M-CLASS ACTIVITY. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 13/2100Z TO 14/2100Z: THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED AT ALL LEVELS. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO REMAIN QUIET TO UNSETTLED FOR THE ENTIRE FORECAST PERIOD. III. EVENT PROBABILITIES 15 NOV-17 NOV CLASS M 05/10/15 CLASS X 01/01/05 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 14 NOV 093 PREDICTED 15 NOV-17 NOV 094/096/096 90 DAY MEAN 14 NOV 090 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 13 NOV 005/004 ESTIMATED AFR/AP 14 NOV 008/005 PREDICTED AFR/AP 15 NOV-17 NOV 005/008-005/008-010/010 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 15 NOV-17 NOV A. MIDDLE LATITUDES ACTIVE 10/10/15 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/01 B. HIGH LATITUDES ACTIVE 10/10/15 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/05