:Product: 20030118SGAS.txt :Issued: 2003 Jan 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 018 Issued at 0245Z on 18 Jan 2003 This report is compiled from data received at SWO on 17 Jan 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 quiet to unsettled D. Stratwarm: STRATWARM ALERT/FRIDAY/STRATWARM EXISTS STRONG WARMING CONTINUES OVER THE SIBERIAN ARCTIC AND NORTHERN EUROPE LEADING TO A REVERSED TEMPERATURE GRADIENT BETWEEN 60N AND THE POLE FROM 30 HPA UPWARDS AND EASTERLY WINDS AT 60N FROM 5 TO 1 HPA. WITHIN THE NEXT TWO DAYS, THE FORECAST INDICATES A SPLITTING OF THE POLAR VORTEX THROUGHOUT THE STRATOSPHERE WITH EASTERLY WINDS AT 60N DOWN TO 10 HPA. E. Daily Indices: (real-time preliminary/estimated values) 10 cm 142 SSN 150 Afr/Ap 010/008 X-ray Background B3.6 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.0e+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 1 2 3 3 3 2 2 Planetary 2 2 2 3 3 3 2 1 F. Comments: None