:Product: 19980711RSGA.txt :Issued: 1998 Jul 11 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 192 ISSUED AT 2200Z ON 11 JUL 1998 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 10/2100Z TO 11/2100Z: SOLAR ACTIVITY HAS BEEN LOW. REGION 8263 (S22W72) PRODUCED A C1/SF FLARE AT 11/0441Z. REGION 8264 (N16W70) PRODUCED THE LARGEST EVENT WITH A C4/SF FLARE AT 11/1250Z. A NEW REGION WAS NUMBERED TODAY AS REGION 8271 (S09E63). IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO REMAIN LOW THROUGH THE FORECAST PERIOD WITH A CHANCE FOR ISOLATED C-CLASS ACTIVITY POSSIBLE. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 10/2100Z TO 11/2100Z: THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET TO UNSETTLED THROUGH THE PERIOD. III. EVENT PROBABILITIES 12 JUL-14 JUL CLASS M 01/01/01 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 11 JUL 108 PREDICTED 12 JUL-14 JUL 106/105/104 90 DAY MEAN 11 JUL 107 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 10 JUL 005/006 ESTIMATED AFR/AP 11 JUL 010/008 PREDICTED AFR/AP 12 JUL-14 JUL 010/008-005/008-005/005 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 12 JUL-14 JUL A. MIDDLE LATITUDES ACTIVE 10/10/10 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/01 B. HIGH LATITUDES ACTIVE 20/20/20 MINOR STORM 10/10/10 MAJOR-SEVERE STORM 05/05/05 NOTICE: GOES-9 IS EXPERIENCING SEVERE ATTITUDE CONTROL PROBLEMS THAT OCCASIONALLY CAUSE THE LOSS OF X-RAY SENSOR DATA. GOES-10 IS BEING BROUGHT OUT OF STORAGE MODE AND WILL BE OPERATIONAL WITHIN THE NEXT WEEK. THERE MAY BE INTERMITTENT OR COMPLETE LOSS OF GOES-9 X-RAY DATA BEFORE GOES-10 BECOMES OPERATIONAL. GOES-8 DATA REMAIN VALID.