:Product: 19980730RSGA.txt :Issued: 1998 Jul 30 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 211 ISSUED AT 2200Z ON 30 JUL 1998 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 29/2100Z TO 30/2100Z: SOLAR ACTIVITY WAS VERY LOW. ONLY A FEW B-CLASS X-RAY FLARES OCCURRED, NONE OF WHICH HAD CORRESPONDING OPTICAL FLARE REPORTS. REGIONS 8280 (S22W41) AND 8282 (N31W34) REMAIN THE MOST COMPLEX SUNSPOT GROUPS ON THE VISIBLE DISK. BOTH REGIONS ARE DECAYING SLOWLY. NEW REGION 8288 (S26E61) WAS NUMBERED. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW TO LOW. FLARES ARE POSSIBLE IN REGIONS 8280 AND 8282. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 29/2100Z TO 30/2100Z: THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET TO UNSETTLED. III. EVENT PROBABILITIES 31 JUL-02 AUG CLASS M 15/15/15 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 30 JUL 115 PREDICTED 31 JUL-02 AUG 112/110/108 90 DAY MEAN 30 JUL 110 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 29 JUL 008/006 ESTIMATED AFR/AP 30 JUL 006/010 PREDICTED AFR/AP 31 JUL-02 AUG 010/010-010/010-005/010 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 31 JUL-02 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