:Product: 20000405SGAS.txt :Issued: 2000 Apr 05 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 096 ISSUED AT 0245Z ON 05 APR 2000 THIS REPORT IS COMPILED FROM DATA RECEIVED AT SWO ON 04 APR A. ENERGETIC EVENTS BEGIN MAX END RGN LOC XRAY OP 245MHZ 10CM SWEEP 0024 0026 0026 200 0118 0132 0144 8948 M1.0 1512 1541 1605 8933 N16W66 C9.7 2F 240 490 IV B. PROTON EVENTS: A MINOR 10 MEV PROTON EVENT STARTED AT 04/2055Z, AND IS CURRENTLY STILL IN PROGRESS. THIS PROTON EVENT IS PROBABLY RELATED TO THE C9/2F EVENT WHICH OCCURRED 04/1541Z. C. GEOMAGNETIC ACTIVITY SUMMARY: THE GEOMAGNETIC FIELD RANGED FROM QUIET TO MAJOR STORM. A K=6 WAS OBSERVED AT BOULDER FOR THE 04/0300Z TIME PERIOD. THE FIELD RETURNED TO QUIET LEVELS BY 04/0900Z ONLY TO BECOME ACTIVE AGAIN BY 04/1500Z. D. STRATWARM: NONE E. DAILY INDICES: (REAL-TIME PRELIMINARY/ESTIMATED VALUES) 10 CM 207 SSN 184 AFR/AP 022/021 X-RAY BACKGROUND C1.1 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 3.2E+06 GT 10 MEV 2.2E+05 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 4.00E+06 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 6 4 2 0 3 4 3 3 PLANETARY 5 4 2 1 4 3 4 4 F. COMMENTS: NONE