:Product: 19970807RSGA.txt :Issued: 1997 Aug 07 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 219 ISSUED AT 2200Z ON 07 AUG 1997 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 06/2100Z TO 07/2100Z: SOLAR ACTIVITY WAS VERY LOW. REGION 8069 (N21W62) EMITTED A SERIES OF B-CLASS, SUB-FAINT FLARES, BUT REMAINED RELATIVELY UNCHANGED IN SIZE AND COMPLEXITY. REGION 8070 (S19E25) SHOWED SOME STRONG GROWTH AND IS NOW A DSO SPOT GROUP. REGION 8068 (S20W22) REMAINED STABLE AND QUIET. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO REMAIN VERY LOW. REGIONS 8069 AND 8070 HAVE AN OUTSIDE CHANCE OF PRODUCING ISOLATED C-CLASS EVENTS. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 06/2100Z TO 07/2100Z: THE GEOMAGNETIC FIELD WAS QUIET. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO REMAIN QUIET FOR THE ENTIRE FORECAST PERIOD. III. EVENT PROBABILITIES 08 AUG-10 AUG CLASS M 01/01/01 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 07 AUG 078 PREDICTED 08 AUG-10 AUG 078/078/076 90 DAY MEAN 07 AUG 073 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 06 AUG 005/004 ESTIMATED AFR/AP 07 AUG 005/007 PREDICTED AFR/AP 08 AUG-10 AUG 005/007-005/005-005/005 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 08 AUG-10 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