:Product: 20000202RSGA.txt :Issued: 2000 Feb 02 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 033 ISSUED AT 2200Z ON 02 FEB 2000 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 01/2100Z TO 02/2100Z: SOLAR ACTIVITY REMAINED AT LOW LEVELS. ONE OPTICALLY UNCORRELATED LOW-LEVEL C-CLASS X-RAY FLARE WAS DETECTED. REGION 8851 (N26E03) CONTINUED TO SHOW MINOR GROWTH, BUT REMAINED SMALL AND SIMPLY-STRUCTURED. THE REMAINING REGIONS WERE SMALL, SIMPLE, AND STABLE INCLUDING NEWLY NUMBERED REGIONS 8855 (N15E57) AND 8856 (S15E82). IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO REMAIN AT LOW LEVELS. HOWEVER, AN INCREASING TREND IS FORECAST TO BEGIN ON 05 FEBRUARY WITH THE EXPECTED RETURN OF OLD REGION 8824 (S13, L = 175). IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 01/2100Z TO 02/2100Z: GEOMAGNETIC FIELD ACTIVITY WAS AT QUIET TO UNSETTLED LEVELS. THE GREATER THAN 2 MEV ELECTRON FLUX AT GEOSYNCHRONOUS ORBIT WAS AT MODERATE TO HIGH LEVELS. IIB. GEOPHYSICAL ACTIVITY FORECAST: GEOMAGNETIC FIELD ACTIVITY IS EXPECTED TO REMAIN AT QUIET TO UNSETTLED LEVELS THROUGH THE PERIOD. THE GREATER THAN 2 MEV ELECTRON FLUX AT GEOSYNCHRONOUS ORBIT IS EXPECTED TO DECREASE TO NORMAL TO MODERATE LEVELS EARLY IN THE PERIOD. III. EVENT PROBABILITIES 03 FEB-05 FEB CLASS M 10/10/20 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 02 FEB 144 PREDICTED 03 FEB-05 FEB 150/155/170 90 DAY MEAN 02 FEB 174 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 01 FEB 005/008 ESTIMATED AFR/AP 02 FEB 008/010 PREDICTED AFR/AP 03 FEB-05 FEB 005/010-005/005-007/005 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 03 FEB-05 FEB A. MIDDLE LATITUDES ACTIVE 10/10/10 MINOR STORM 01/01/01 MAJOR-SEVERE STORM 01/01/01 B. HIGH LATITUDES ACTIVE 15/15/15 MINOR STORM 10/10/10 MAJOR-SEVERE STORM 01/01/01