:Product: 19990114SGAS.txt :Issued: 1999 Jan 14 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 014 ISSUED AT 0245Z ON 14 JAN 1999 THIS REPORT IS COMPILED FROM DATA RECEIVED AT SWO ON 13 JAN A. ENERGETIC EVENTS BEGIN MAX END RGN LOC XRAY OP 245MHZ 10CM SWEEP 0141 0142 0143 130 B. PROTON EVENTS: NONE C. GEOMAGNETIC ACTIVITY SUMMARY: THE GEOMAGNETIC FIELD BEGAN THE PERIOD AT QUIET LEVELS. SOLAR WIND DATA FROM THE ACE SPACECRAFT SHOWED THE PASSAGE OF A SHOCK AT 13/0959 UT THAT WAS FOLLOWED BY ENHANCED, SOUTHWARD INTERPLANETARY MAGNETIC FIELDS (-20 NT). THIS RESULTED IN UNSETTLED TO MAJOR STORM CONDITIONS FOR THE REMAINDER OF THE DAY. THIS DISTURBANCE MAY HAVE ORIGINATED ON 9 JANUARY IN ASSOCIATION WITH A FILAMENT DISAPPEARANCE IN THE NORTH CENTER OF THE SUN AND/OR A LONG-DURATION C1 X-RAY EVENT. THE GREATER THAN 2 MEV ELECTRON FLUX LEVELS AT GEOSYNCHRONOUS ORBIT, WHICH ATTAINED HIGH LEVELS ON 12 JANUARY, FELL BELOW EVENT THRESHOLD AT 12/1835 UT. D. STRATWARM: NONE E. DAILY INDICES: (REAL-TIME PRELIMINARY/ESTIMATED VALUES) 10 CM 119 SSN 077 AFR/AP 021/028 X-RAY BACKGROUND B2.2 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 2.7E+05 GT 10 MEV 1.4E+04 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 1.30E+06 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 2 2 2 3 4 5 3 5 PLANETARY 2 2 1 4 4 5 5 6 F. COMMENTS: NONE