:Product: 20030218SGAS.txt :Issued: 2003 Feb 18 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 049 Issued at 0245Z on 18 Feb 2003 This report is compiled from data received at SWO on 17 Feb A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep None B. Proton Events: None C. Geomagnetic Activity Summary: The geomagnetic field was at quiet to unsettled levels. Coronal hole effects continue to keep solar wind elevated between 600 and 650 km/s and Bz continues to be, on average, slightly negative. D. Stratwarm: STRATWARM ALERT/MONDAY/STRATWARM EXISTS. Wave two circulation pattern throughout the stratosphere with a reversed temperature gradient between 60N and the north pole throughout the stratosphere and easterly zonal mean winds at 1 and 2 hpa. 5-day forecast shows a recovery of the circulation towards almost normal winter conditions. E. Daily Indices: (real-time preliminary/estimated values) 10 cm 112 SSN 016 Afr/Ap 012/011 X-ray Background B2.3 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 9.1e+05 GT 10 MeV 1.3e+04 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 5.20e+07 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices: Boulder 3 2 2 3 3 3 2 3 Planetary 3 2 2 3 3 3 2 3 F. Comments: None