:Product: 0521SGAS.txt
:Issued: 2023 May 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 141 Issued at 0245Z on 21 May 2023
This report is compiled from data received at SWO on 20 May
A.  Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
 0649 0702 0712  3311 N19E72 M1.0  Sf                               
 0716 0732 0736  3311 N19E72 M6.4  1n        140                    
 0918 0927 0932  3312        M1.1                                   
 1048 1054 1110  3311        M1.6                                   
 1225 1235 1240  3311        M8.9                                   
 1454 1500 1504  3311        M5.6                                   
 1857 1903 1907  3311        M1.1                                   
 2252 2306 2321              M5.1            170                    
B.  Proton Events:  None.
C.  Geomagnetic Activity Summary:  The geomagnetic field reached
major storm levels.
D.  Stratwarm:  Not Available
E.  Daily Indices: (real-time preliminary/estimated values)
10 cm 170  SSN 138  Afr/Ap 026/???   X-ray Background C2.3
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 5.1e+04   GT 10 MeV 2.2e+04 p/(cm2-ster-day)
(GOES-16 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 1.10e+06 e/(cm2-ster-day)
(GOES-16 satellite synchronous orbit W75 degrees)
3 Hour K-indices:
Boulder 4 5 6 4 3 4 3 3 Planetary 5 6 5 4 3 4 3 ? 
F.  Comments:  None.