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20020912SGAS.txt
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:Product: 20020912SGAS.txt
:Issued: 2002 Sep 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 255 Issued at 0245Z on 12 Sep 2002
This report is compiled from data received at SWO on 11 Sep
A. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep
0137 0143 0148 C2.2 290
0156 0156 0200 0100 S17W51 Sf 140
0726 0735 0742 0105 S10E30 M2.2 2b 68 230
0802 0805 0809 110
0853 0905 0906 190
0929 0929 0929 250
1016 1017 1019 800
1329 1329 1330 260
1621 1621 1621 160
1631 1631 1631 100
B. Proton Events: None
C. Geomagnetic Activity Summary: Geomagnetic field conditions
ranged from quiet to major storm levels. Onset of coronal hole high
speed stream effects were evident since about 11/0900 UTC, and the
single period of major storm conditions observed at higher latitudes
occurred shortly thereafter. The remainder of the day had
conditions in the unsettled to minor storm range.
D. Stratwarm: None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 216 SSN 213 Afr/Ap 016/028 X-ray Background B8.7
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 1.0e+06 GT 10 MeV 1.7e+04 p/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 6.40e+06 e/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
3 Hour K-indices:
Boulder 2 1 4 5 3 5 3 4 Planetary 2 3 5 6 4 4 4 4
F. Comments: None