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:Product: 20020426SGAS.txt
:Issued: 2002 Apr 26 0245 UTC
# Prepared jointly by the U.S. Dept. of Commerce, NOAA,
# Space Environment Center and the U.S. Air Force.
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 116 Issued at 0245Z on 26 Apr 2002
This report is compiled from data received at SWO on 25 Apr
A. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep
0353 0353 0354 100
0554 0602 0605 9912 N10W56 C2.5 Sf 1200
0906 0906 0906 230
1044 1044 1044 290
1851 1851 1851 140
2122 2122 2123 120
B. Proton Events: The greater than 10 MeV proton event that began
at 21/0225 UTC persisted, but just barely above event threshold (the
maximum for this event was 2520 pfu at 21/2320 UTC).
C. Geomagnetic Activity Summary: Geomagnetic field activity was at
mostly quiet levels.
D. Stratwarm: None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 167 SSN 208 Afr/Ap 003/005 X-ray Background B5.9
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 3.3e+06 GT 10 MeV 1.2e+06 p/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 1.40e+06 e/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
3 Hour K-indices:
Boulder 2 1 0 1 2 2 1 0 Planetary 2 1 0 2 2 3 2 1
F. Comments: Afr estimated based on Boulder USGS magnetometer data.