:Product: 19990519SGAS.txt :Issued: 1999 May 19 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 139 ISSUED AT 0245Z ON 19 MAY 1999 THIS REPORT IS COMPILED FROM DATA RECEIVED AT SWO ON 18 MAY A. ENERGETIC EVENTS BEGIN MAX END RGN LOC XRAY OP 245MHZ 10CM SWEEP 0359 0400 0418 8541 N19W52 SF 190 1504 1504 1506 100 1521 1521 1522 110 B. PROTON EVENTS: NONE. C. GEOMAGNETIC ACTIVITY SUMMARY: THE GEOMAGNETIC FIELD WAS QUIET TO ACTIVE WITH MINOR STORM CONDITIONS SEEN IN THE HIGH LATITUDES FROM 18/06Z TO 18/09Z. THE DISTURBED CONDITIONS WERE DUE TO THE EFFECT OF A RECURRENT CORONAL HOLE AND AN ACCOMPANYING CO-ROTATING SHOCK. D. STRATWARM: NONE. E. DAILY INDICES: (REAL-TIME PRELIMINARY/ESTIMATED VALUES) 10 CM 141 SSN 129 AFR/AP 022/023 X-RAY BACKGROUND B6.9 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 9.8E+04 GT 10 MEV 1.4E+04 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 2.60E+05 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 4 4 4 4 3 3 4 3 PLANETARY 3 4 5 4 4 4 4 3 F. COMMENTS: NONE.