:Product: 0906SGAS.txt :Issued: 2026 Sep 06 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 249 Issued at 0245Z on 06 Sep 2026 This report is compiled from data received at SWO on 05 Sep A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 1504 1518 1527 4520 S12W65 M1.0 1f 350 1732 1746 1753 4524 N11E41 C8.5 2n 140 B. Proton Events: The 10 MeV proton flux at geosynchronous orbit reached 17.8 pfu, and the 100 MeV proton flux reached 1.16 pfu. C. Geomagnetic Activity Summary: The geomagnetic field was quiet with an isolated period of unsettled. D. Stratwarm: Not Available E. Daily Indices: (real-time preliminary/estimated values) 10 cm 111 SSN 070 Afr/Ap 006/006 X-ray Background B4.0 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.3e+06 GT 10 MeV 2.8e+05 p/(cm2-ster-day) (GOES-18 satellite synchronous orbit W137 degrees) Daily Electron Fluence GT 2 MeV 3.10e+07 e/(cm2-ster-day) (GOES-19 satellite synchronous orbit W72 degrees) 3 Hour K-indices: Boulder 2 3 2 3 1 1 1 2 Planetary 2 3 2 2 1 0 0 1 F. Comments: Proton events were from Plage Region 4520.