:Product: 0918SGAS.txt :Issued: 2023 Sep 18 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 261 Issued at 0245Z on 18 Sep 2023 This report is compiled from data received at SWO on 17 Sep A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0022 0022 0022 320 1555 1604 1610 3435 C3.5 II B. Proton Events: None C. Geomagnetic Activity Summary: Field conditions were at unsettled to active levels. D. Stratwarm: Not Available E. Daily Indices: (real-time preliminary/estimated values) 10 cm 145 SSN 094 Afr/Ap 014/020 X-ray Background B9.2 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.5e+07 GT 10 MeV 2.3e+04 p/(cm2-ster-day) (GOES-16 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 2.50e+06 e/(cm2-ster-day) (GOES-16 satellite synchronous orbit W75 degrees) 3 Hour K-indices: Boulder 3 3 3 3 3 3 3 3 Planetary 4 3 3 3 3 4 4 3 F. Comments: None