:Product: 19980712RSGA.txt :Issued: 1998 Jul 12 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 193 ISSUED AT 2200Z ON 12 JUL 1998 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 11/2100Z TO 12/2100Z: SOLAR ACTIVITY BECAME VERY LOW. ONLY SMALL B-CLASS FLUCTUATIONS WERE OBSERVED. CURRENT DISK REGIONS WERE PREDOMINANTLY STABLE. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY SHOULD BE VERY LOW TO LOW. SMALL C-CLASS EVENTS ARE POSSIBLE FROM REGIONS 8269 (N18E45) AND 8270 (S20E42). IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 11/2100Z TO 12/2100Z: THE GEOMAGNETIC FIELD AT MID-LATITUDES WAS QUIET TO UNSETTLED. PLANETARY INDICES WERE QUIET TO ACTIVE. THE MOST DISTURBED PERIOD WAS FROM 12/0600-1200Z. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD SHOULD BE PREDOMINANTLY QUIET FOR THE NEXT THREE DAYS. III. EVENT PROBABILITIES 13 JUL-15 JUL CLASS M 05/05/05 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 12 JUL 099 PREDICTED 13 JUL-15 JUL 097/096/095 90 DAY MEAN 12 JUL 109 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 11 JUL 011/011 ESTIMATED AFR/AP 12 JUL 008/012 PREDICTED AFR/AP 13 JUL-15 JUL 005/008-005/008-005/008 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 13 JUL-15 JUL A. MIDDLE LATITUDES ACTIVE 10/10/10 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 NOTICE: GOES-9 CONTINUES TO OPERATE AND THE X-RAY SENSOR REMAINS POINTED AT THE SUN. GOES-10 WILL BECOME OPERATIONAL THE WEEK OF 13 JUL AND WILL BEGIN ITS MOVEMENT TO 135W LONGITUDE SHORTLY THEREAFTER TO REPLACE GOES-9.