:Product: 1221SGAS.txt :Issued: 2015 Dec 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 355 Issued at 0245Z on 21 Dec 2015 This report is compiled from data received at SWO on 20 Dec A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0620 0620 0621 220 B. Proton Events: None. C. Geomagnetic Activity Summary: Geomagnetic field activity reached major storm levels. D. Stratwarm: Not Available E. Daily Indices: (real-time preliminary/estimated values) 10 cm 117 SSN 033 Afr/Ap 033/068 X-ray Background B5.8 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 2.0e+06 GT 10 MeV 1.1e+04 p/(cm2-ster-day) (GOES-13 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 5.00e+05 e/(cm2-ster-day) (GOES-13 satellite synchronous orbit W75 degrees) 3 Hour K-indices: Boulder 3 6 4 5 5 6 4 4 Planetary 3 6 4 5 5 7 6 6 F. Comments: None.