:Product: 19990110RSGA.txt :Issued: 1999 Jan 10 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 010 ISSUED AT 2200Z ON 10 JAN 1999 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 09/2100Z TO 10/2100Z: SOLAR ACTIVITY WAS LOW. REGION 8431 (S28W07) PRODUCED THE ONLY FLARE REPORTED DURING THE LAST 24 HOURS, A C1/SF AT 10/0259UT. ALL ACTIVE REGIONS CURRENTLY ON THE VISIBLE DISK ARE SMALL AND RELATIVELY SIMPLE. NEW REGION 8437 (N11E68) WAS NUMBERED. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW TO LOW. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 09/2100Z TO 10/2100Z: THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED. THE GREATER THAN 2 MEV ELECTRON FLUX WAS MODERATE. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET TO UNSETTLED. III. EVENT PROBABILITIES 11 JAN-13 JAN CLASS M 01/01/01 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 10 JAN 110 PREDICTED 11 JAN-13 JAN 110/110/115 90 DAY MEAN 10 JAN 138 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 09 JAN 009/008 ESTIMATED AFR/AP 10 JAN 008/008 PREDICTED AFR/AP 11 JAN-13 JAN 010/008-010/008-005/008 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 11 JAN-13 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