:Product: 20040829SGAS.txt :Issued: 2004 Aug 29 0250 UT # 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 242 Issued at 0245Z on 29 Aug 2004 This report is compiled from data received at SWO on 28 Aug A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 1734 1734 1734 120 B. Proton Events: None C. Geomagnetic Activity Summary: The geomagnetic field was at predominantly quiet to unsettled levels. There was an isolated active period that occurred between 28/0600 and 0900Z in response to southward Bz oscillations in the interplanetary magnetic field. D. Stratwarm: None E. Daily Indices: (real-time preliminary/estimated values) 10 cm 087 SSN 028 Afr/Ap 012/012 X-ray Background A7.1 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 3.8e+05 GT 10 MeV 1.5e+04 p/(cm2-ster-day) (GOES-11 satellite synchronous orbit W98 degrees) Daily Electron Fluence GT 2 MeV 4.30e+07 e/(cm2-ster-day) (GOES-12 satellite synchronous orbit W75 degrees) 3 Hour K-indices: Boulder 2 3 4 3 2 3 2 2 Planetary 2 3 4 3 3 3 3 2 F. Comments: The ACE spacecraft orbit will bring ACE to its closest approach with the Sun on August 30, 2004. During that time possible solar radio noise may interfere with spacecraft telemetry resulting in the loss of real time solar wind plasma, magnetic field, and particle data.