Viewing archive of Thursday, 15 September 2005

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 2005 Sep 15 0248 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 258 Issued at 0245Z on 15 Sep 2005 This report is compiled from data received at SWO on 14 Sep
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
 0000 0000 0000                                        IV           
 0448 0000 1641                                        IV           
 1005 1038 1054              M4.6     170    188       IV           
 1635 0000 0421                                        IV           
 2315 2322 2330  0808        X1.7            180                    
B. Proton Events
The greater than 10 MeV proton flux crossed the 10 pfu event threshold at 14/0040 UTC in response to an influx of energetic particles from the recent X1 flares late on 13 September. This new proton enhancement reached a maximum of 183 pfu at 14/1520 UTC before declining to around 35 pfu by 14/2140 UTC; it has since increased to near 100 pfu by the end of the period.
C. Geomagnetic Activity Summary
The geomagnetic field was at quiet to minor storm levels. Minor storm conditions were the result of elevated solar wind speeds and long periods of southward Bz in the IMF.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 117  SSN 086  Afr/Ap 018/025   X-ray Background B5.2
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 8.4e+07   GT 10 MeV 8.5e+06 p/(cm2-ster-day)
(GOES-11 satellite synchronous orbit W113 degrees)
Daily Electron Fluence
GT 2 MeV 9.80e+08 e/(cm2-ster-day)
(GOES-12 satellite synchronous orbit W74 degrees)
3 Hour K-indices
Boulder 3 3 5 4 4 3 3 3 Planetary 3 3 5 5 5 3 3 2 
F. Comments
  The greater than 2 MeV electron fluence at
geosynchronous orbit reached high levels today.

All times in UTC

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