Viewing archive of Thursday, 12 September 2002

Geophysical report

Any mentioned solar flare in this report has a scaling factor applied by the Space Weather Prediction Center (SWPC). Because of the SWPC scaling factor, solar flares are reported as 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.
Solar and Geophysical Activity Summary 2002 Sep 12 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

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

All times in UTC

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