Viewing archive of Wednesday, 12 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 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 2001 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
0049 0111 0123              M2.6            86
0653 0704 0722              M1.2
0943 0945 0946                       450
0956 0956 0956                       350
1230 1233 1235              C2.9     120
1718 1721 1753  9610 S12E11       Sf 1300
1903 1903 1903                       430
2025 2036 2043  9616 S12E88 M4.5  Sf 390    26
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic field was quiet to active. The onset of coronal hole high speed stream effects was evident with elevated geomagnetic activity from about 1200 UTC through the end of the day.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 250  SSN 180  Afr/Ap 012/009   X-ray Background C2.8
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 1.3e+05   GT 10 MeV 1.3e+04 p/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 2.50e+06 e/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 1 2 1 1 4 4 3 3 Planetary 1 0 0 1 3 4 3 3
F. Comments
  Afr estimated from Boulder A.

All times in UTC

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