:Product: 19980516SGAS.txt :Issued: 1998 May 16 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 136 ISSUED AT 0245Z ON 16 MAY 1998 THIS REPORT IS COMPILED FROM DATA RECEIVED AT SWO ON 15 MAY A. ENERGETIC EVENTS BEGIN MAX END RGN LOC XRAY OP 245MHZ 10CM SWEEP 0121 0128 0142 B8.8 130 1942 1942 1942 120 2222 2224 2226 960 B. PROTON EVENTS: NONE C. GEOMAGNETIC ACTIVITY SUMMARY: THE GEOMAGNETIC FIELD RANGED FROM QUIET TO UNSETTLED LEVELS. A SUDDEN IMPULSE WAS OBSERVED AT 15/1453Z AND MEASURED 6 NT ON THE BOULDER MAGNETOMETER. D. STRATWARM: NONE E. DAILY INDICES: 10 CM 116 SSN 101 AFR/AP 008/008 X-RAY BACKGROUND B4.4 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 1.9E+06 GT 10 MEV 1.7E+04 P/(CM2-STER-DAY) GOES-9 SATELLITE SYNCHRONOUS ORBIT W135 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 3.20E+08 E/(CM2-STER-DAY) GOES-9 SATELLITE SYNCHRONOUS ORBIT W135 DEGREES) 3 HOUR K-INDICES: BOULDER 1 0 0 0 2 3 2 3 PLANETARY 1 0 1 1 3 3 3 3 F. COMMENTS: THE GREATER THAN 2 MEV ELECTRON FLUENCE WAS MODERATE