:Product: 19980430SGAS.txt :Issued: 1998 Apr 30 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 120 ISSUED AT 0245Z ON 30 APR 1998 THIS REPORT IS COMPILED FROM DATA RECEIVED AT SWO ON 29 APR A. ENERGETIC EVENTS BEGIN MAX END RGN LOC XRAY OP 245MHZ 10CM SWEEP 0513 0522 0525 8210 S17E29 B7.7 SF 250 0754 0806 0827 8210 S17E23 C1.7 1F 440 1606 1637 1659 8210 M6.8 1400 100 IV 1957 1958 2000 110 B. PROTON EVENTS: NONE C. GEOMAGNETIC ACTIVITY SUMMARY: THE GEOMAGNETIC FIELD WAS QUIET. AS OF 30/0200Z THE EXPECTED SHOCK FROM THE X1/HALO CME OF 27 APR HAD NOT ARRIVED. ENERGETIC ELECTRON FLUXES AT GEOSYNCHRONOUS ORBIT WERE PREDOMINANTLY HIGH. D. STRATWARM: NONE E. DAILY INDICES: 10 CM 101 SSN 065 AFR/AP 005/006 X-RAY BACKGROUND B2.0 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 1.3E+06 GT 10 MEV 2.7E+04 P/(CM2-STER-DAY) GOES-9 SATELLITE SYNCHRONOUS ORBIT W135 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 6.90E+08 E/(CM2-STER-DAY) GOES-9 SATELLITE SYNCHRONOUS ORBIT W135 DEGREES) 3 HOUR K-INDICES: BOULDER 2 2 2 1 2 2 1 2 PLANETARY 2 1 1 2 2 2 2 2 F. COMMENTS: NONE