:Product: 0621SGAS.txt :Issued: 2025 Jun 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 172 Issued at 0245Z on 21 Jun 2025 This report is compiled from data received at SWO on 20 Jun A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0002 0004 0006 4114 N19W39 M4.6 1n 1501 1504 1506 4114 N16W53 C3.6 Sf 160 1506 1506 1506 140 1721 1740 1759 4117 S12E46 M1.0 1f 180 B. Proton Events: None. C. Geomagnetic Activity Summary: The geomagnetic field was quiet and unsettled. D. Stratwarm: Not Available E. Daily Indices: (real-time preliminary/estimated values) 10 cm 130 SSN 095 Afr/Ap 008/009 X-ray Background B6.6 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.3e+05 GT 10 MeV 1.6e+04 p/(cm2-ster-day) (GOES-18 satellite synchronous orbit W137 degrees) Daily Electron Fluence GT 2 MeV 3.40e+07 e/(cm2-ster-day) (GOES-19 satellite synchronous orbit W0 degrees) 3 Hour K-indices: Boulder 1 3 3 2 3 3 2 1 Planetary ? ? ? ? ? ? ? ? F. Comments: None.