:Product: 20030423SGAS.txt
:Issued: 2003 Apr 23 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 113 Issued at 0245Z on 23 Apr 2003
This report is compiled from data received at SWO on 22 Apr
A.  Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
0719 0719 0719                       76            II
1613 1617 1622  0338 N20W17 C2.2  Sf 140    50
1941 2011 2037  0338 N20W14 C4.0  Sf 7500             IV
B.  Proton Events:  None
C.  Geomagnetic Activity Summary:  The geomagnetic field was
unsettled to active. A high speed solar wind stream that began early
on 21 April continues. Solar wind speeds exceeded 600 km/s early in
the period, but gradually declined to below 550 km/s by the end of
the period.
D.  Stratwarm:  None
E.  Daily Indices: (real-time preliminary/estimated values)
10 cm 132  SSN 147  Afr/Ap 019/022   X-ray Background B4.7
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 2.1e+06   GT 10 MeV 1.6e+04 p/(cm2-ster-day)
(GOES-10 satellite synchronous orbit W135 degrees)
Daily Electron Fluence
GT 2 MeV 3.30e+08 e/(cm2-ster-day)
(GOES-10 satellite synchronous orbit W135 degrees)
3 Hour K-indices:
Boulder 4 4 4 3 3 3 3 3 Planetary 4 4 4 4 3 3 3 4
F.  Comments:  The greater than 2 MeV electrons at geosynchronous
orbit reached high levels again today.