:Product: 0401SGAS.txt :Issued: 2015 Apr 01 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 091 Issued at 0245Z on 01 Apr 2015 This report is compiled from data received at SWO on 31 Mar 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 unsettled levels. An 18 nT sudden impulse was recorded by the Boulder magnetometer at 31/0831 UTC as the interplanetary shock observed at the ACE spacecraft reached Earth. The subsequent geomagnetic field response was muted. D. Stratwarm: Not Available E. Daily Indices: (real-time preliminary/estimated values) 10 cm 128 SSN 053 Afr/Ap 007/011 X-ray Background B4.7 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.9e+05 GT 10 MeV 1.1e+04 p/(cm2-ster-day) (GOES-13 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 9.00e+06 e/(cm2-ster-day) (GOES-13 satellite synchronous orbit W75 degrees) 3 Hour K-indices: Boulder 1 1 2 3 3 3 2 2 Planetary 1 0 2 2 3 4 4 2 F. Comments: None