Viewing archive of Friday, 28 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 28 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 271 Issued at 0245Z on 28 Sep 2001 This report is compiled from data received at SWO on 27 SepA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0751 0808 0822 9628 S18W38 Sf 130 40 0855 1213 1406 M1
B. Proton Events
The greater than 10 MeV proton event that began
at 24/1215 UTC reached maximum of 12900 pfu at 25/2235 UTC and
continues in progress. The day end flux level at 28/0000 UTC was 242
pfu.
C. Geomagnetic Activity Summary
The geomagnetic field was quiet to
unsettled.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 270 SSN 279 Afr/Ap 010/010 X-ray Background C1.8 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 3.0e+08 GT 10 MeV 4.0e+07 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 1.90e+07 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 2 1 2 3 3 3 3 3 Planetary 1 1 1 3 3 3 3 3
F. Comments
None
All times in UTC
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