:Product: 1018SGAS.txt
:Issued: 2026 Oct 18 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 291 Issued at 0245Z on 18 Oct 2026
This report is compiled from data received at SWO on 17 Oct
A.  Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
None
B.  Proton Events:  None.
C.  Geomagnetic Activity Summary:  The geomagnetic field was at quiet
to unsettled levels.
D.  Stratwarm:  Not Available
E.  Daily Indices: (real-time preliminary/estimated values)
10 cm 132  SSN 087  Afr/Ap 004/006   X-ray Background B6.0
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 2.6e+05   GT 10 MeV 2.1e+04 p/(cm2-ster-day)
(GOES-18 satellite synchronous orbit W137 degrees)
Daily Electron Fluence
GT 2 MeV 2.50e+07 e/(cm2-ster-day)
(GOES-19 satellite synchronous orbit W73 degrees)
3 Hour K-indices:
Boulder 1 1 0 0 2 3 3 1 Planetary 2 1 1 1 1 3 3 1 
F.  Comments:  None.