:Product: 19980212SGAS.txt :Issued: 1998 Feb 12 0245 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Environment Center and the U.S. Air Force. # JOINT USAF/NOAA SOLAR AND GEOPHYSICAL ACTIVITY SUMMARY SGAS NUMBER 043 ISSUED AT 0245Z ON 12 FEB 1998 THIS REPORT IS COMPILED FROM DATA RECEIVED AT SWO ON 11 FEB A. ENERGETIC EVENTS BEGIN MAX END RGN LOC XRAY OP 245MHZ 10CM SWEEP NONE B. PROTON EVENTS: NONE. C. GEOMAGNETIC ACTIVITY SUMMARY: GEOMAGNETIC FIELD ACTIVITY RANGED FROM QUIET TO ACTIVE LEVELS DURING MOST OF THE PERIOD. THE ACTIVE PERIODS WERE BRIEF AND OCCURRED AT ALL LATITUDES. MINOR TO MAJOR STORM LEVELS OCCURRED AT HIGH LATITUDES DURING 11/1300 - 1500UT. D. STRATWARM: STRATWARM ALERT/WEDNESDAY/STRATWARM EXISTS. MINOR WARMING OVER NORTHEAST EUROPE, SIBERIA, ALASKA, AND NEARLY THE WHOLE ARCTIC CONTINUES. TEMPERATURE GRADIENT REVERSED BETWEEN 60N AND THE POLE AT 10 HPA AND ABOVE. E. DAILY INDICES: 10 CM 086 SSN 063 AFR/AP 010/013 X-RAY BACKGROUND A4.3 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 2.1E+06 GT 10 MEV 1.7E+04 P/(CM2-STER-DAY) GOES-9 SATELLITE SYNCHRONOUS ORBIT W135 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 6.90E+06 E/(CM2-STER-DAY) GOES-9 SATELLITE SYNCHRONOUS ORBIT W135 DEGREES) 3 HOUR K-INDICES: BOULDER 3 3 1 2 3 3 2 3 PLANETARY 3 3 1 2 3 4 3 3 F. COMMENTS: NONE.