Geophysical report

Viewing archive of Thursday, 20 September 2001

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 20 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 263 Issued at 0245Z on 20 Sep 2001 This report is compiled from data received at SWO on 19 Sep

A. Energetic Events

Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
0325 0325 0326                       150
0659 0721 0757              C7.2     300           II
0914 0914 0914                       13000
1540 1541 1544  9616 S14W29       Sf 480
1739 1739 1739                       390
2342 2349 2356                       2900          II

B. Proton Events

None

C. Geomagnetic Activity Summary

Quiet to unsettled.

D. Stratwarm

None

E. Daily Indices: (real-time preliminary/estimated values)

10 cm 199  SSN 224  Afr/Ap 008/008   X-ray Background C1.5
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 1.8e+05   GT 10 MeV 1.8e+04 p/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 6.30e+05 e/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 2 3 2 1 2 1 3 2 Planetary 3 3 2 2 2 2 3 1

F. Comments

  None

All times in UTC

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The strength of the interplanetary magnetic field is moderate (11.33nT), the direction is North (3.77nT).

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