:Product: 20021223SGAS.txt :Issued: 2002 Dec 23 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 357 Issued at 0245Z on 23 Dec 2002 This report is compiled from data received at SWO on 22 Dec A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0214 0252 0312 0223 N23W42 M1.1 2f 160 230 II/IV 0331 0337 0348 250 B. Proton Events: None C. Geomagnetic Activity Summary: The geomagnetic field was at quiet to unsettled levels with an isolated active period at middle and high latitudes between 22/1800 and 2100 UTC. The NASA/ACE instrument detected a weak shock passage at approximately 22/1300 UTC. The Bz component of the interplanetary magnetic field has been predominantly north since transient onset. The greater than 2 MeV electron flux at geosynchronous orbit reached moderate levels today. D. Stratwarm: None E. Daily Indices: (real-time preliminary/estimated values) 10 cm 172 SSN 168 Afr/Ap 011/012 X-ray Background B8.6 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.4e+06 GT 10 MeV 1.7e+04 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 3.40e+06 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices: Boulder 2 2 2 2 3 3 4 2 Planetary 2 2 2 3 3 3 4 2 F. Comments: None