:Product: 19980106RSGA.txt :Issued: 1998 Jan 06 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 006 ISSUED AT 2200Z ON 06 JAN 1998 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 05/2100Z TO 06/2100Z: SOLAR ACTIVITY WAS VERY LOW. NO FLARES WERE OBSERVED. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 05/2100Z TO 06/2100Z: THE GEOMAGNETIC FIELD WAS QUIET TO ACTIVE. SOLAR WIND DATA SUGGESTS THAT AN INTERPLANETARY SHOCK ARRIVED AT THE EARTH AT ABOUT 06/1300Z. THIS SHOCK IS BELIEVED TO BE ASSOCIATED WITH THE CME OBSERVED ON JANUARY 03. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE UNSETTLED TO ACTIVE FOR THE NEXT SEVERAL HOURS AS THE CURRENT DISTURBANCE CONTINUES. ISOLATED STORM PERIODS ARE POSSIBLE. III. EVENT PROBABILITIES 07 JAN-09 JAN CLASS M 01/01/01 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 06 JAN 087 PREDICTED 07 JAN-09 JAN 085/085/085 90 DAY MEAN 06 JAN 095 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 05 JAN 004/002 ESTIMATED AFR/AP 06 JAN 015/015 PREDICTED AFR/AP 07 JAN-09 JAN 015/015-010/010-005/005 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 07 JAN-09 JAN A. MIDDLE LATITUDES ACTIVE 25/25/10 MINOR STORM 10/10/05 MAJOR-SEVERE STORM 01/01/01 B. HIGH LATITUDES ACTIVE 30/30/10 MINOR STORM 10/10/05 MAJOR-SEVERE STORM 05/05/01