:Product: 0920SGAS.txt :Issued: 2015 Sep 20 0245 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Weather Prediction Center and the U.S. Air Force. # Joint USAF/NOAA Solar and Geophysical Activity Summary SGAS Number 263 Issued at 0245Z on 20 Sep 2015 This report is compiled from data received at SWO on 19 Sep 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 minor storm levels. Active to minor storm periods were observed from 19/0300-0900 UTC due to a prolonged period of southward Bz in conjunction with a solar sector boundary crossing. D. Stratwarm: Not Available E. Daily Indices: (real-time preliminary/estimated values) 10 cm 106 SSN 061 Afr/Ap 012/011 X-ray Background B3.0 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 7.2e+05 GT 10 MeV 1.2e+04 p/(cm2-ster-day) (GOES-13 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 1.60e+07 e/(cm2-ster-day) (GOES-13 satellite synchronous orbit W75 degrees) 3 Hour K-indices: Boulder 3 4 4 4 2 2 2 2 Planetary 3 3 4 3 2 0 1 2 F. Comments: None