:Product: 20031031SGAS.txt
:Issued: 2003 Oct 31 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 304 Issued at 0245Z on 31 Oct 2003
This report is compiled from data received at SWO on 30 Oct
A.  Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
0156 0207 0229  0488 N08W22 M1.6  1f
0705 0705 0705                       250
0720 0721 0721                       120
1009 1009 1012                       1500
1333 1333 1333                       2500
1502 1504 1504                       230
1515 1528 1537  0486        M1.5            29
1906 1906 1908                       490    100
1918 1921 1927              C5.6     500
B.  Proton Events:  A new surge of high energy protons followed the
X-10 flare, enhancing the existing greater than 10 MeV and greater
than 100 MeV proton events from the X17 flare on the 28th. This
enhancement reached 110 pfu (29/2310Z) in the greater than 100 MeV
level, and 3300 pfu (30/1935Z) in the greater than 10 MeV level. A
polar cap absorption continues and the proton event remains in
progress.
C.  Geomagnetic Activity Summary:  The geomagnetic field was at
predominantly minor to severe storm levels. The intense geomagnetic
storm that began at 29/0611Z continued through the first half of
this period. Severe levels were observed from 30/0000 - 0600Z. A
short-lived "lull" (K5-6) in  activity preceded the onset of another
severe geomagnetic storm. The very fast CME from the X10 flare that
peaked at 29/2049Z impacted the magnetic field at around 30/1600Z -
a remarkably fast 19-hour transit from Sun to Earth. Sustained
southward IMF Bz in the -15 to -30 Nt range is assuring a severe
response.  A Forbush decrease at around 20% remains in progress.
D.  Stratwarm:  None
E.  Daily Indices: (real-time preliminary/estimated values)
10 cm 271  SSN 293  Afr/Ap 147/162   X-ray Background C2.8
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 7.7e+08   GT 10 MeV 1.4e+08 p/(cm2-ster-day)
(GOES-11 satellite synchronous orbit W108 degrees)
Daily Electron Fluence
GT 2 MeV 1.90e+07 e/(cm2-ster-day)
(GOES-12 satellite synchronous orbit W75 degrees)
3 Hour K-indices:
Boulder 7 7 5 5 4 7 8 9 Planetary 8 7 6 5 5 8 9 9
F.  Comments:  None