:Product: 0621SGAS.txt
:Issued: 2026 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 2026
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
 0126 0151 0204  4472        M1.3                                   
 0259 0307 0312  4470        C1.4                   II              
 1206 1220 1225              C1.9     280                           
 1450 1500 1505  4473        M1.0                                   
B.  Proton Events:  None.
C.  Geomagnetic Activity Summary:  The geomagnetic field was mostly
quiet with an isolated active period.
D.  Stratwarm:  Not Available
E.  Daily Indices: (real-time preliminary/estimated values)
10 cm 113  SSN 073  Afr/Ap 008/007   X-ray Background B5.0
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 3.2e+05   GT 10 MeV 1.7e+04 p/(cm2-ster-day)
(GOES-18 satellite synchronous orbit W137 degrees)
Daily Electron Fluence
GT 2 MeV 2.60e+07 e/(cm2-ster-day)
(GOES-19 satellite synchronous orbit W72 degrees)
3 Hour K-indices:
Boulder 3 3 2 2 3 3 2 2 Planetary 3 2 2 2 2 2 2 2 
F.  Comments:  None