:Product: 0120SGAS.txt :Issued: 2026 Jan 20 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 020 Issued at 0245Z on 20 Jan 2026 This report is compiled from data received at SWO on 19 Jan A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0124 0124 0124 170 0213 0213 0213 100 0335 0335 0335 100 0830 0830 0830 220 1014 1014 1014 140 1109 1119 1122 4345 M1.1 B. Proton Events: None C. Geomagnetic Activity Summary: The geomagnetic field reached severe levels. D. Stratwarm: Not Available E. Daily Indices: (real-time preliminary/estimated values) 10 cm 173 SSN 162 Afr/Ap 064/073 X-ray Background C1.8 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 2.8e+09 GT 10 MeV 2.8e+08 p/(cm2-ster-day) (GOES-18 satellite synchronous orbit W137 degrees) Daily Electron Fluence GT 2 MeV 1.90e+08 e/(cm2-ster-day) (GOES-19 satellite synchronous orbit W75 degrees) 3 Hour K-indices: Boulder 2 2 1 1 2 4 9 9 Planetary 3 2 1 1 1 3 8 9 F. Comments: The geomagnetic field reached 9m which is considered severe levels.