:Product: 19980511SGAS.txt :Issued: 1998 May 11 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 131 ISSUED AT 0245Z ON 11 MAY 1998 THIS REPORT IS COMPILED FROM DATA RECEIVED AT SWO ON 10 MAY A. ENERGETIC EVENTS BEGIN MAX END RGN LOC XRAY OP 245MHZ 10CM SWEEP 0640 0647 0650 C1.4 110 0815 0826 0845 M1.6 79 1313 1320 1323 S29E88 M3.9 SF 320 B. PROTON EVENTS: PROTON FLUXES AT GREATER THAN 10 MEV BEGAN THE PERIOD AT ENHANCED LEVELS BUT EVENT CRITERIA (10 PFU) WERE NOT MET AND FLUXES THEN DECLINED TO BACKGROUND BY 2400 UT. C. GEOMAGNETIC ACTIVITY SUMMARY: THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED. D. STRATWARM: NONE. E. DAILY INDICES: 10 CM 107 SSN 061 AFR/AP 007/011 X-RAY BACKGROUND B8.7 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 2.4E+06 GT 10 MEV 2.6E+05 P/(CM2-STER-DAY) GOES-9 SATELLITE SYNCHRONOUS ORBIT W135 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 2.10E+08 E/(CM2-STER-DAY) GOES-9 SATELLITE SYNCHRONOUS ORBIT W135 DEGREES) 3 HOUR K-INDICES: BOULDER 2 1 3 3 2 2 2 3 PLANETARY 2 1 3 3 3 2 2 3 F. COMMENTS: THE ENERGETIC ELECTRON FLUX AT GEOSYNCHRONOUS ORBIT WAS MODERATE.