:Product: 19990528SGAS.txt :Issued: 1999 May 28 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 148 ISSUED AT 0245Z ON 28 MAY 1999 THIS REPORT IS COMPILED FROM DATA RECEIVED AT SWO ON 27 MAY A. ENERGETIC EVENTS BEGIN MAX END RGN LOC XRAY OP 245MHZ 10CM SWEEP 0931 0933 0935 8551 16000 0938 0000 1700 IV 1046 0000 1057 II B. PROTON EVENTS: NONE C. GEOMAGNETIC ACTIVITY SUMMARY: THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED. D. STRATWARM: NONE E. DAILY INDICES: (REAL-TIME PRELIMINARY/ESTIMATED VALUES) 10 CM 155 SSN 154 AFR/AP 010/010 X-RAY BACKGROUND B6.5 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 8.1E+05 GT 10 MEV 1.8E+05 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 3.40E+06 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 3 3 2 2 2 3 1 3 PLANETARY 2 3 3 2 2 3 3 3 F. COMMENTS: THERE WAS AN ENHANCEMENT OF THE GREATER THAN 10 MEV PROTONS TODAY: THE PEAK FLUX OF 9 PFU OCCURRED AT 27/1230Z.