:Product: 20020512SGAS.txt
:Issued: 2002 May 12 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 132 Issued at 0245Z on 12 May 2002
This report is compiled from data received at SWO on 11 May
A.  Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
1121 1132 1141  9937 S06W31 M1.4  Sf 41     76     II
2259 2301 2316                       690
B.  Proton Events:  None
C.  Geomagnetic Activity Summary:  The geomagnetic field was at quiet
to major storm levels.  Data from the Advanced Composition Explorer
(ACE) showed an increase in the solar wind speed from roughly 350 to
450 km/s beginning at approximately 11/0915 UTC.  The north-south
component of the interplanetary magnetic field remained strongly
negative for several hours thereafter.  A sudden impulse of 41 nT
was observed at the Boulder Magnetometer at 11/1028 UTC.  Major
storm conditions were observed at high latitudes from 11/1100
through 11/1800 UTC.  Uncertain as to the source(s) of the activity,
although multiple CME's were seen in SOHO/LASCO imagery on the
eighth and ninth.  Source regions for CME's believed to have been
from both the east and west limbs.
D.  Stratwarm:  None
E.  Daily Indices: (real-time preliminary/estimated values)
10 cm 188  SSN 226  Afr/Ap ???/040   X-ray Background B8.3
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 2.6e+05   GT 10 MeV 1.2e+04 p/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 3.40e+05 e/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
3 Hour K-indices:
Boulder 1 1 3 5 6 6 4 4 Planetary 2 1 3 6 6 6 5 4
F.  Comments:  None