:Product: 19980805RSGA.txt :Issued: 1998 Aug 05 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 217 ISSUED AT 2200Z ON 05 AUG 1998 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 04/2100Z TO 05/2100Z: SOLAR ACTIVITY WAS LOW. A SINGLE UNOBSERVED C-CLASS EVENT OCCURRED AT 1615Z. REGION 8293 (S22E39) GREW IN WHITE LIGHT AND H-ALPHA, AND IS THE DOMINANT REGION ON THE DISK. IT POSSESSES A SLIGHT DEGREE OF MAGNETIC COMPLEXITY AND BRIGHT PLAGE. NEWLY NUMBERED REGION 8296 (N16E70) ROTATED FULLY INTO VIEW AS A MATURE SINGLE SPOT. THE LIMBS WERE QUIET. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO REMAIN LOW. REGION 8293 COULD RAISE ACTIVITY LEVELS OVER THE NEXT THREE DAYS IF ADDITIONAL DEVELOPMENT OCCURS THERE. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 04/2100Z TO 05/2100Z: THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO PERSIST AT QUIET TO UNSETTLED LEVELS THROUGHOUT THE FORECAST PERIOD. III. EVENT PROBABILITIES 06 AUG-08 AUG CLASS M 10/10/10 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 05 AUG 127 PREDICTED 06 AUG-08 AUG 130/130/135 90 DAY MEAN 05 AUG 109 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 04 AUG 008/009 ESTIMATED AFR/AP 05 AUG 010/010 PREDICTED AFR/AP 06 AUG-08 AUG 010/008-005/008-005/008 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 06 AUG-08 AUG A. MIDDLE LATITUDES ACTIVE 20/10/10 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/01 B. HIGH LATITUDES ACTIVE 25/15/15 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/01