Viewing archive of Thursday, 27 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 27 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 270 Issued at 0245Z on 27 Sep 2001 This report is compiled from data received at SWO on 26 SepA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0252 0258 0303 M1.8 81 74 0300 0302 0306 100 40 1021 1021 1021 590
B. Proton Events
Start Max End Peak Flux
24/1215 25/2235 ip 12900 (greater than 10 MeV)
24/1440 25/0755 26/1940 31 (greater than 100 MeV)
C. Geomagnetic Activity Summary
The geomagnetic field ranged from
quiet to minor storm levels.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 283 SSN 278 Afr/Ap 022/024 X-ray Background C1.9 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.4e+09 GT 10 MeV 2.3e+08 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 1.20e+07 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 5 3 5 4 2 2 2 2 Planetary 5 4 5 4 3 3 2 2
F. Comments
None
All times in UTC
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