:Product: 19970514RSGA.txt :Issued: 1997 May 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 134 ISSUED AT 2200Z ON 14 MAY 1997 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 13/2100Z TO 14/2100Z: SOLAR ACTIVITY WAS VERY LOW. ONLY SMALL B-CLASS X-RAY FLARES OCCURRED AND NO OPTICAL FLARES WERE REPORTED. REGION 8038 (N20W44) REMAINS THE ONLY SUNSPOT GROUP ON THE DISK. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW TO LOW. AN ISOLATED C-CLASS FLARE IS POSSIBLE IN REGION 8038. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 13/2100Z TO 14/2100Z: THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BECOME ACTIVE WITH POSSIBLE STORM PERIODS ON 15 MAY IN RESPONSE TO THE CME EVENT DETECTED ON 12 MAY. III. EVENT PROBABILITIES 15 MAY-17 MAY CLASS M 01/01/01 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 14 MAY 074 PREDICTED 15 MAY-17 MAY 072/072/070 90 DAY MEAN 14 MAY 074 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 13 MAY 003/003 ESTIMATED AFR/AP 14 MAY 005/008 PREDICTED AFR/AP 15 MAY-17 MAY 025/025-015/015-010/010 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 15 MAY-17 MAY A. MIDDLE LATITUDES ACTIVE 15/20/15 MINOR STORM 40/10/05 MAJOR-SEVERE STORM 30/15/05 B. HIGH LATITUDES ACTIVE 10/25/20 MINOR STORM 40/20/10 MAJOR-SEVERE STORM 40/15/05