:Product: 19991029SGAS.txt :Issued: 1999 Oct 29 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 302 ISSUED AT 0245Z ON 29 OCT 1999 THIS REPORT IS COMPILED FROM DATA RECEIVED AT SWO ON 28 OCT A. ENERGETIC EVENTS BEGIN MAX END RGN LOC XRAY OP 245MHZ 10CM SWEEP 0028 0028 0031 770 0936 0936 0936 150 1435 1435 1435 160 B. PROTON EVENTS: NONE C. GEOMAGNETIC ACTIVITY SUMMARY: THE GEOMAGNETIC FIELD VARIED FROM QUIET TO MINOR STORM LEVELS DURING THE DAY. ABOUT 1200Z, SOLAR WIND PLASMA AND MAGNETIC FIELD EXPERIENCED A CHANGE AT THE ACE SPACECRAFT, RESULTING IN THE DISTURBED LEVELS SEEN DURING THE LATTER HALF OF THE PERIOD. THESE DATA SUGGEST A GLANCING BLOW BY A TRANSIENT AS THE CAUSE OF THE ELEVATED ACTIVITY. THE GREATER THAN 2 MEV ELECTRON FLUX AT GEOSYNCHRONOUS ORBIT REACHED HIGH LEVELS FROM 1330-1630Z, APPROXIMATELY. D. STRATWARM: NONE E. DAILY INDICES: (REAL-TIME PRELIMINARY/ESTIMATED VALUES) 10 CM 184 SSN 196 AFR/AP 018/016 X-RAY BACKGROUND C1.0 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 4.4E+05 GT 10 MEV 1.4E+04 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 3.20E+07 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 2 2 3 2 5 4 4 2 PLANETARY 2 1 3 1 5 4 3 3 F. COMMENTS: NONE