:Product: 1217SGAS.txt :Issued: 2006 Dec 17 0248 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 351 Issued at 0245Z on 17 Dec 2006 This report is compiled from data received at SWO on 16 Dec 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 active levels. The elevated conditions were due to the lingering effects of the transient resulting from the X3 flare that occurred on 13 December. A shock passage was observed at the ACE spacecraft at approximately 16/1722Z which was followed by a Sudden Impulse at the Boulder magnetometer at 16/1756Z (13 nT). This latest disturbance is associated with the X1 flare that occurred on 14 December. D. Stratwarm: Not Available E. Daily Indices: (real-time preliminary/estimated values) 10 cm 082 SSN 020 Afr/Ap 010/011 X-ray Background A5.9 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.4e+07 GT 10 MeV 1.8e+05 p/(cm2-ster-day) (GOES-11 satellite synchronous orbit W136 degrees) Daily Electron Fluence GT 2 MeV 1.00e+09 e/(cm2-ster-day) (GOES-12 satellite synchronous orbit W76 degrees) 3 Hour K-indices: Boulder 2 4 2 1 1 2 3 3 Planetary 3 4 1 1 0 2 4 3 F. Comments: The greater than 2 MeV electron fluence at geosynchronous orbit reached reached high levels today.