:Product: 20040726SGAS.txt
:Issued: 2004 Jul 26 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 208 Issued at 0245Z on 26 Jul 2004
This report is compiled from data received at SWO on 25 Jul
A.  Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
 0025 0032 0036  0652 N09W26 C7.4  Sf        200                    
 0539 0551 0558  0652 N10W31 M7.1  2b 81     810       IV           
 0630 0639 0645  0652 N03W27 M1.0  1f        34                     
 1231 1233 1234                       130                           
 1318 1325 1332  0652        C2.1     150                           
 1337 1349 1355  0652        M2.2     620    65                     
 1419 1514 1643  0652 N08W33 M1.1  1f 2100   120       IV           
 1521 0000 1526                                     II              
 1638 1639 1646                              170                    
 1956 1957 1957                       220    63                     
B.  Proton Events:  A greater than 10 MeV proton event accompanied
the long duration M1 flare and CME that occurred at 25/1514Z. The
proton event began at 25/1855Z and remains in progress. The peak so
far was 55 pfu at 25/2305Z.
C.  Geomagnetic Activity Summary:  The geomagnetic field was at
active to severe storm levels. The shock observed at the ACE
spacecraft on 24/0600Z was followed by a prolonged period of
southward IMF Bz that lasted through midway on 25 July. Bz ranged
from -10 to -20 nT for much of this period, while solar wind speed
was elevated in the 550 to 700 km/s range. Consequently, severe
geomagnetic storm levels were observed at all latitudes. It is
likely that this activity was associated with the complex series of
CMEs observed on 22 July. Late in this period, a discontinuity in
the solar wind suggested that transient flow from the multiple CME
activity on 23 July had arrived.
D.  Stratwarm:  None
E.  Daily Indices: (real-time preliminary/estimated values)
10 cm 145  SSN 130  Afr/Ap 091/122   X-ray Background B7.2
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 1.9e+07   GT 10 MeV 5.9e+05 p/(cm2-ster-day)
(GOES-11 satellite synchronous orbit W97 degrees)
Daily Electron Fluence
GT 2 MeV 9.30e+07 e/(cm2-ster-day)
(GOES-12 satellite synchronous orbit W75 degrees)
3 Hour K-indices:
Boulder 5 6 6 7 6 7 6 6 Planetary 6 7 7 8 6 7 6 7 
F.  Comments:  None