:Product: 19970816RSGA.txt :Issued: 1997 Aug 16 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 ***************************CORRECTED COPY****************************************** SDF NUMBER 228 ISSUED AT 2200Z ON 16 AUG 1997 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 15/2100Z TO 16/2100Z: SOLAR ACTIVITY WAS VERY LOW. A 5 DEGREE FILAMENT AT N13E27 DISAPPEARED BETWEEN 16/0429Z AND 16/0512Z. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO REMAIN VERY LOW THROUGHOUT THE FORECAST PERIOD. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 15/2100Z TO 16/2100Z: THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED. THE GREATER THAN 2 MEV ELECTRON FLUX HAS BEEN AT MODERATE TO HIGH LEVELS THROUGH THE PERIOD. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET THROUGH THE FORECAST PERIOD. III. EVENT PROBABILITIES 17 AUG-19 AUG CLASS M 01/01/01 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 16 AUG 078 PREDICTED 17 AUG-19 AUG 078/076/076 90 DAY MEAN 16 AUG 073 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 15 AUG 008/008 ESTIMATED AFR/AP 16 AUG 010/010 PREDICTED AFR/AP 17 AUG-19 AUG 005/005-005/005-005/005 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 17 AUG-19 AUG A. MIDDLE LATITUDES ACTIVE 15/15/15 MINOR STORM 01/01/01 MAJOR-SEVERE STORM 01/01/01 B. HIGH LATITUDES ACTIVE 20/20/20 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/01 99999 PLAIN CORRECTED PART IB. TO READ VERY LOW 99999