:Product: 19990410SGAS.txt :Issued: 1999 Apr 10 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 100 ISSUED AT 0245Z ON 10 APR 1999 THIS REPORT IS COMPILED FROM DATA RECEIVED AT SWO ON 09 APR A. ENERGETIC EVENTS BEGIN MAX END RGN LOC XRAY OP 245MHZ 10CM SWEEP 1305 1306 1306 220 1531 1532 1533 280 B. PROTON EVENTS: NONE. C. GEOMAGNETIC ACTIVITY SUMMARY: THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED. ENERGETIC ELECTRON FLUXES AT GEOSYNCHRONOUS ORBIT DECREASED TO MODERATE LEVELS DURING THE PERIOD. D. STRATWARM: NONE. E. DAILY INDICES: (REAL-TIME PRELIMINARY/ESTIMATED VALUES) 10 CM 136 SSN 139 AFR/AP 008/010 X-RAY BACKGROUND B3.3 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 1.8E+05 GT 10 MEV 1.6E+04 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 2.50E+07 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 2 3 2 1 2 3 1 1 PLANETARY 2 2 1 1 2 2 1 1 F. COMMENTS: NONE.