:Product: 20000809RSGA.txt :Issued: 2000 Aug 09 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 222 ISSUED AT 2200Z ON 09 AUG 2000 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 08/2100Z TO 09/2100Z: SOLAR ACTIVITY WAS LOW. SEVERAL SMALL C-CLASS FLARES OCCURRED FROM A VARIETY OF SOURCES. SPOTLESS REGION 9111 (N10W81) PRODUCED A NUMBER OF SUBFLARES, AS DID REGION 9114 (N11W16). REGION 9114 IS STILL THE LARGEST SUNSPOT GROUP ON THE VISIBLE DISK BUT HAS SHOWN DECAY SINCE YESTERDAY. THE SOUTHEAST LIMB NEAR S10 HAS ALSO BEEN ACTIVE AND APPEARS TO HAVE BEEN THE SOURCE OF YESTERDAY'S M1 FLARE. THIS RETURNING AREA IS NEAR THE LOCATION OF OLD REGION 9087 (S12, L=235) WHICH PRODUCED SEVERAL M-CLASS FLARES LAST ROTATION. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE LOW TO MODERATE. THE GENERAL LEVEL OF ACTIVITY IS EXPECTED TO INCREASE OVER THE NEXT FEW DAYS AS PREVIOUSLY ACTIVE LONGITUDES RETURN AT THE EAST LIMB. IIA. GEOPHYSICAL ACTIVITY SUMMARY 08/2100Z TO 09/2100Z: THE GEOMAGNETIC FIELD WAS QUIET. THE GREATER THAN 2 MEV ELECTRON FLUX WAS MODERATE. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET TO UNSETTLED. III. EVENT PROBABILITIES 10 AUG-12 AUG CLASS M 30/30/30 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 09 AUG 182 PREDICTED 10 AUG-12 AUG 190/200/210 90 DAY MEAN 09 AUG 191 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 08 AUG 007/009 ESTIMATED AFR/AP 09 AUG 005/008 PREDICTED AFR/AP 10 AUG-12 AUG 005/008-005/010-010/010 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 10 AUG-12 AUG A. MIDDLE LATITUDES ACTIVE 05/05/10 MINOR STORM 01/01/01 MAJOR-SEVERE STORM 01/01/01 B. HIGH LATITUDES ACTIVE 10/10/15 MINOR STORM 01/01/01 MAJOR-SEVERE STORM 01/01/01