:Product: 19980104RSGA.txt :Issued: 1998 Jan 04 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 004 ISSUED AT 2200Z ON 04 JAN 1998 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 03/2100Z TO 04/2100Z: SOLAR ACTIVITY WAS VERY LOW. ONLY SMALL B-CLASS FLARES OCCURRED. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 03/2100Z TO 04/2100Z: THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE MOSTLY QUIET FOR THE NEXT 24 HOURS. INCREASED ACTIVITY MAY OCCUR ON JANUARY 6-7 DUE TO A CME OBSERVED ON 03 JANUARY. III. EVENT PROBABILITIES 05 JAN-07 JAN CLASS M 01/01/01 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 04 JAN 091 PREDICTED 05 JAN-07 JAN 088/086/084 90 DAY MEAN 04 JAN 095 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 03 JAN 004/004 ESTIMATED AFR/AP 04 JAN 004/005 PREDICTED AFR/AP 05 JAN-07 JAN 005/005-010/010-015/012 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 05 JAN-07 JAN A. MIDDLE LATITUDES ACTIVE 10/25/25 MINOR STORM 05/10/10 MAJOR-SEVERE STORM 01/01/01 B. HIGH LATITUDES ACTIVE 10/30/30 MINOR STORM 05/10/10 MAJOR-SEVERE STORM 01/05/05