:Product: 19970820RSGA.txt :Issued: 1997 Aug 20 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 232 ISSUED AT 2200Z ON 20 AUG 1997 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 19/2100Z TO 20/2100Z: SOLAR ACTIVITY WAS VERY LOW. NO FLARES WERE OBSERVED. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 19/2100Z TO 20/2100Z: THE GEOMAGNETIC FIELD WAS QUIET. THE GREATER THAN 2 MEV ELECTRON FLUX WAS NORMAL TO MODERATE. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET. III. EVENT PROBABILITIES 21 AUG-23 AUG CLASS M 01/01/01 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 20 AUG 075 PREDICTED 21 AUG-23 AUG 072/072/072 90 DAY MEAN 20 AUG 073 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 19 AUG 005/005 ESTIMATED AFR/AP 20 AUG 005/005 PREDICTED AFR/AP 21 AUG-23 AUG 005/005-005/005-005/005 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 21 AUG-23 AUG A. MIDDLE LATITUDES ACTIVE 15/15/15 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/01 B. HIGH LATITUDES ACTIVE 15/15/15 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/01