:Product: 0918SGAS.txt
:Issued: 2021 Sep 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 261 Issued at 0245Z on 18 Sep 2021
This report is compiled from data received at SWO on 17 Sep
A.  Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
 0407 0408 0412                       1200   44                     
 0409 0420 0448              C3.5            44     II              
B.  Proton Events:  None.
C.  Geomagnetic Activity Summary:  The geomagnetic field reached G1
(Minor) geomagnetic storm levels.
D.  Stratwarm:  Not Available
E.  Daily Indices: (real-time preliminary/estimated values)
10 cm 073  SSN 000  Afr/Ap 019/021   X-ray Background A5.2
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 2.3e+05   GT 10 MeV 4.7e+04 p/(cm2-ster-day)
(GOES-16 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 2.90e+06 e/(cm2-ster-day)
(GOES-16 satellite synchronous orbit W75 degrees)
3 Hour K-indices:
Boulder 2 3 1 3 3 4 5 4 Planetary 2 3 0 3 3 3 5 5 
F.  Comments:  None.