:Product: 19990520SGAS.txt :Issued: 1999 May 20 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 140 ISSUED AT 0245Z ON 20 MAY 1999 THIS REPORT IS COMPILED FROM DATA RECEIVED AT SWO ON 19 MAY A. ENERGETIC EVENTS BEGIN MAX END RGN LOC XRAY OP 245MHZ 10CM SWEEP 0258 0259 0259 170 1024 1025 1026 310 1049 1049 1050 450 1059 1100 1101 400 1102 1102 1102 580 1103 1103 1104 1000 1108 1108 1109 840 1131 1132 1133 820 1142 1150 1154 2000 1217 1221 1223 1800 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 142 SSN 120 AFR/AP 010/010 X-RAY BACKGROUND B6.8 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 1.4E+05 GT 10 MEV 1.5E+04 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 4.10E+06 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 3 3 2 2 2 2 3 3 PLANETARY 3 3 2 1 2 2 3 3 F. COMMENTS: DUE TO COMMUNICATION PROBLEMS, SOME RADIO BURSTS MAY BE MISSING FROM THIS PRODUCT. A STRONG 245 MHZ NOISE STORM WAS IN PROGRESS FOR THE MAJORITY OF THE PERIOD.