:Product: 0921SGAS.txt :Issued: 2015 Sep 21 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 264 Issued at 0245Z on 21 Sep 2015 This report is compiled from data received at SWO on 20 Sep A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0455 0503 0517 2420 M1.5 0700 0701 0701 2700 0743 0743 0744 2700 0816 0817 0817 11000 0944 0944 0944 100 1732 1803 1829 2415 S20W24 M2.1 2n 140 320 II B. Proton Events: None C. Geomagnetic Activity Summary: The geomagnetic field reached major storm levels 20/0900 UTC due to the arrival of the 18 Sep CME. Minor strom levels were observed from 20/0900-1800 followed by unsettled levels for the remainder of the day in transition from CME effects to CH HSS effects. D. Stratwarm: Not Available E. Daily Indices: (real-time preliminary/estimated values) 10 cm 110 SSN 074 Afr/Ap 032/035 X-ray Background B3.4 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.1e+06 GT 10 MeV 3.8e+04 p/(cm2-ster-day) (GOES-13 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 8.10e+06 e/(cm2-ster-day) (GOES-13 satellite synchronous orbit W75 degrees) 3 Hour K-indices: Boulder 2 5 5 5 4 4 2 3 Planetary 2 4 6 5 5 5 3 3 F. Comments: None