:Product: 19981216SGAS.txt :Issued: 1998 Dec 16 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 350 ISSUED AT 0245Z ON 16 DEC 1998 THIS REPORT IS COMPILED FROM DATA RECEIVED AT SWO ON 15 DEC A. ENERGETIC EVENTS BEGIN MAX END RGN LOC XRAY OP 245MHZ 10CM SWEEP 1219 1219 1219 140 B. PROTON EVENTS: NONE C. GEOMAGNETIC ACTIVITY SUMMARY: QUIET D. STRATWARM: STRATWARM ALERT/TUESDAY/STRATWARM EXISTS. THE STRONG WARMING CONTINUES OVER SIBERIA AND EXPANDS OVER POLAR REGION AND CANADIAN ARCTIC IN THE UPPER AND MIDDLE STRATOSPHERE. THE CANADIAN WARMING PERSISTS IN THE LOWER STRATOSPHERE. E. DAILY INDICES: (REAL-TIME PRELIMINARY/ESTIMATED VALUES) 10 CM 142 SSN 108 AFR/AP 004/005 X-RAY BACKGROUND B5.1 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 1.1E+05 GT 10 MEV 1.4E+04 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 7.50E+06 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 2 1 2 1 1 2 1 2 PLANETARY 2 1 2 1 1 2 1 2 F. COMMENTS: NONE