Viewing archive of Tuesday, 25 September 2001

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 2001 Sep 25 0245 UTC
Prepared by the NOAA © SWPC and processed by

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 268 Issued at 0245Z on 25 Sep 2001 This report is compiled from data received at SWO on 24 Sep
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
0922 0947 0949  9632 S20E22       Sf 110
0932 1038 1109  9632 S16E23 X2.6  2b 1900   7500      IV
1421 1421 1421                       110
1820 1836 1843              C7.6     330
B. Proton Events
start max end peak flux 1215 2400 ip 1720 pfu (grtr than 10 MeV) 1440 2325 ip 17.1 pfu (grtr than 100 MeV) Both events remain in progress.
C. Geomagnetic Activity Summary
Quiet to unsettled
D. Stratwarm
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 279  SSN 315  Afr/Ap 010/006   X-ray Background C1.8
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 4.8e+07   GT 10 MeV 3.1e+07 p/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 4.20e+04 e/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 3 2 2 1 2 2 2 1 Planetary 3 1 1 2 2 2 2 1
F. Comments

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