:Product: 19970806RSGA.txt :Issued: 1997 Aug 06 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 218 ISSUED AT 2200Z ON 06 AUG 1997 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 05/2100Z TO 06/2100Z: SOLAR ACTIVITY WAS VERY LOW. REGION 8069 (N21W48) SHOWED STRONG GROWTH OVER THE PAST 24 HOURS AND IS NOW A DAO SPOT GROUP. THIS REGION MANAGED TO PRODUCE A MINOR B-CLASS FLARE. THE OTHER TWO SPOTTED REGIONS, AND THE REMAINDER OF THE VISIBLE DISK, WERE QUIET AND STABLE. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO REMAIN VERY LOW FOR THE ENTIRE FORECAST PERIOD. REGION 8069 HAS AN OUTSIDE CHANCE FOR CONTINUED GROWTH AND A POSSIBLE C-CLASS FLARE. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 05/2100Z TO 06/2100Z: THE GEOMAGNETIC FIELD WAS QUIET AT ALL LATITUDES. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO REMAIN QUIET FOR THE ENTIRE FORECAST PERIOD. III. EVENT PROBABILITIES 07 AUG-09 AUG CLASS M 01/01/01 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 06 AUG 077 PREDICTED 07 AUG-09 AUG 078/078/078 90 DAY MEAN 06 AUG 073 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 05 AUG 006/003 ESTIMATED AFR/AP 06 AUG 004/008 PREDICTED AFR/AP 07 AUG-09 AUG 005/007-005/007-005/005 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 07 AUG-09 AUG 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