:Product: 1221SGAS.txt
:Issued: 2025 Dec 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 355 Issued at 0245Z on 21 Dec 2025
This report is compiled from data received at SWO on 20 Dec
A.  Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
 0736 0753 0806  4315 N19E58 M1.0  Sf               II              
B.  Proton Events:  None
C.  Geomagnetic Activity Summary:  The geomagnetic activity was at
quiet to unsettled levels.
D.  Stratwarm:  Not Available
E.  Daily Indices: (real-time preliminary/estimated values)
10 cm 120  SSN 074  Afr/Ap 004/006   X-ray Background B6.5
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 2.5e+06   GT 10 MeV 1.5e+04 p/(cm2-ster-day)
(GOES-18 satellite synchronous orbit W137 degrees)
Daily Electron Fluence
GT 2 MeV 2.30e+08 e/(cm2-ster-day)
(GOES-19 satellite synchronous orbit W75 degrees)
3 Hour K-indices:
Boulder 1 1 1 2 2 2 2 2 Planetary 2 1 1 1 2 2 2 3 
F.  Comments:  None
