Viewing archive of Sunday, 8 September 2002

Geophysical report

Solar and Geophysical Activity Summary 2002 Sep 08 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 251 Issued at 0245Z on 08 Sep 2002 This report is compiled from data received at SWO on 07 Sep
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
0439 0450 0456              C1.6     150
0512 0513 0513                       110
0539 0539 0540                       140
0721 0722 0722                       130
0824 0824 0824                       190
0838 0838 0838                       110
1414 1415 1415                       120
1519 1520 1520                       100
1719 1719 1719                       4700
1724 1724 1724                       200
1735 1747 1754              C5.4     170
1819 1819 1819                       220
1829 1829 1829                       100
1830 1830 1830                       130
2053 2054 2054                       150
B. Proton Events
The greater than 10 MeV proton flux crossed the 10 pfu event threshold at 07/0440 UTC after a slow rise over the previous 28 hours. Peak event flux so far was 208 pfu at 07/1650 UTC.
C. Geomagnetic Activity Summary
The geomagnetic field ranged from quiet to severe storm levels. A shock in the solar wind was observed by the NASA ACE spacecraft at 07/1609 UTC and was followed by a 7 nT sudden impulse on the Boulder magnetometer at 07/1638 UTC.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 183  SSN 180  Afr/Ap 030/045   X-ray Background B9.4
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 1.0e+08   GT 10 MeV 2.1e+06 p/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 1.00e+07 e/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 3 3 3 3 4 6 6 5 Planetary 3 3 3 3 3 7 7 6
F. Comments
  The Afr index reported in Part E is estimated from
Boulder observations.

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