:Product: 20000103RSGA.txt :Issued: 2000 Jan 03 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 003 ISSUED AT 2200Z ON 03 JAN 2000 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 02/2100Z TO 03/2100Z: SOLAR ACTIVITY WAS LOW. REGION 8813 (S16W07) PRODUCED THE LARGEST FLARE SINCE YESTERDAY, A C5/SF AT 02/2227UT. THIS ACTIVE REGION IS GROWING AND HAS MIXED POLARITIES IN THE LEADER SUNSPOTS. OTHER DISK REGIONS WERE MOSTLY QUIET. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE LOW. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 02/2100Z TO 03/2100Z: THE GEOMAGNETIC FIELD WAS QUIET TO ACTIVE. SOLAR WIND INFORMATION SUGGESTS THAT THE CORONAL HOLE RELATED HIGH-SPEED STREAM IS DIMINISHING. THE GREATER THAN 2 MEV ELECTRON FLUX AT GEOSYNCHRONOUS ORBIT WAS HIGH. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET TO UNSETTLED. ISOLATED ACTIVE CONDITIONS ARE POSSIBLE DURING THE BEGINNING OF THE FORECAST PERIOD AS THE CURRENT DISTURBANCE SUBSIDES. III. EVENT PROBABILITIES 04 JAN-06 JAN CLASS M 05/05/05 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 03 JAN 133 PREDICTED 04 JAN-06 JAN 135/135/140 90 DAY MEAN 03 JAN 176 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 02 JAN 013/014 ESTIMATED AFR/AP 03 JAN 015/015 PREDICTED AFR/AP 04 JAN-06 JAN 015/015-010/010-010/010 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 04 JAN-06 JAN A. MIDDLE LATITUDES ACTIVE 10/10/10 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/01 B. HIGH LATITUDES ACTIVE 10/10/10 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/01