:Product: 20040727SGAS.txt
:Issued: 2004 Jul 27 0250 UT
# 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 209 Issued at 0245Z on 27 Jul 2004
This report is compiled from data received at SWO on 26 Jul
A.  Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
 0536 0552 0601  0652 N02W41 M1.3  Sf        61                     
 0610 0000 0000                                        IV           
 0647 0647 0647                       460                           
 1723 1730 1737  0652 N03W45 M1.1  2n        38                     
 1758 1758 1759                       110                           
 2346 0000 0011  0652        M1.2                                   
B.  Proton Events:  The greater than 10 MeV proton event that began
yesterday at 25/1855Z, is still in progress.
C.  Geomagnetic Activity Summary:  The geomagnetic field ranged from
quiet to severe storm levels. The severe geomagnetic storm that
occurred yesterday, continued into the early hours of this period.
Major to severe geomagnetic storm periods were observed through
26/0300Z. Solar wind speed remained elevated from 500 to over 700
km/s, but IMF Bz was generally around zero from 0300 to 2228Z.
Consequently, the geomagnetic field was mostly quiet to unsettled. 
A strong shock impacted the ACE spacecraft at 26/2228Z.  A sudden
impulse (SI) of 96 Nt was observed on the Boulder magnetometer at
2251Z.  Major to severe storming ensued. This CME was associated
with the long-duration M1 flare at 25/1514Z. The CME made a very
fast Sun to Earth transit - just over 31 hours.
D.  Stratwarm:  None
E.  Daily Indices: (real-time preliminary/estimated values)
10 cm 128  SSN 113  Afr/Ap ???/031   X-ray Background B6.6
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 1.6e+08   GT 10 MeV 9.5e+06 p/(cm2-ster-day)
(GOES-11 satellite synchronous orbit W97 degrees)
Daily Electron Fluence
GT 2 MeV 4.30e+08 e/(cm2-ster-day)
(GOES-12 satellite synchronous orbit W75 degrees)
3 Hour K-indices:
Boulder 6 4 3 3 2 2 3 6 Planetary 6 4 3 3 3 2 3 6 
F.  Comments:  None