:Product: 0421SGAS.txt
:Issued: 2018 Apr 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 111 Issued at 0245Z on 21 Apr 2018
This report is compiled from data received at SWO on 20 Apr
A.  Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
 1358 1358 1400                       170                           
 1403 1431 1434                       690000                        
B.  Proton Events:  None.
C.  Geomagnetic Activity Summary:  The geomagnetic field reached
major storm levels due to effects from a CIR.
D.  Stratwarm:  Not Available
E.  Daily Indices: (real-time preliminary/estimated values)
10 cm 073  SSN 014  Afr/Ap 029/038   X-ray Background A5.7
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 2.9e+06   GT 10 MeV 1.6e+04 p/(cm2-ster-day)
(GOES-15 satellite synchronous orbit W135 degrees)
Daily Electron Fluence
GT 2 MeV 2.80e+07 e/(cm2-ster-day)
(GOES-15 satellite synchronous orbit W135 degrees)
3 Hour K-indices:
Boulder 3 4 6 5 4 4 4 3 Planetary 3 5 6 6 4 4 5 3 
F.  Comments:  None.