:Product: 20010912SGAS.txt :Issued: 2001 Sep 12 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 255 Issued at 0245Z on 12 Sep 2001 This report is compiled from data received at SWO on 11 Sep A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0049 0111 0123 M2.6 86 0653 0704 0722 M1.2 0943 0945 0946 450 0956 0956 0956 350 1230 1233 1235 C2.9 120 1718 1721 1753 9610 S12E11 Sf 1300 1903 1903 1903 430 2025 2036 2043 9616 S12E88 M4.5 Sf 390 26 B. Proton Events: None C. Geomagnetic Activity Summary: The geomagnetic field was quiet to active. The onset of coronal hole high speed stream effects was evident with elevated geomagnetic activity from about 1200 UTC through the end of the day. D. Stratwarm: None E. Daily Indices: (real-time preliminary/estimated values) 10 cm 250 SSN 180 Afr/Ap 012/009 X-ray Background C2.8 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.3e+05 GT 10 MeV 1.3e+04 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 2.50e+06 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices: Boulder 1 2 1 1 4 4 3 3 Planetary 1 0 0 1 3 4 3 3 F. Comments: Afr estimated from Boulder A.