Viewing archive of Thursday, 28 September 2017

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 2017 Sep 28 0245 UTC
Prepared 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 2017 This report is compiled from data received at SWO on 27 Sep
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
 1210 1210 1210                       130                           
 1249 1249 1249                       100                           
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic field reached major storm levels in the 27/18-21Z synoptic period due to CIR and positive polarity CH HSS influences. Minor levels were observed the final synoptic periods of the day.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 091  SSN 035  Afr/Ap 024/037   X-ray Background A8.1
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 2.9e+06   GT 10 MeV 1.4e+04 p/(cm2-ster-day)
(GOES-13 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 1.90e+06 e/(cm2-ster-day)
(GOES-13 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 3 2 4 4 3 3 5 4 Planetary 3 2 4 4 4 4 7 5 
F. Comments
  None

All times in UTC

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