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Geophysical report

Solar and Geophysical Activity Summary 2017 Sep 15 0245 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 2017 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
 0057 0057 0057                       130                           
B. Proton Events
The greater than 10 MeV proton flux continued a steady decline from S1 (Minor radiation storm) levels, with a maximum flux of 77 pfu at 14/0120 UTC and ended the period below the S1 level. The greater than than 100 MeV proton flux returned to background levels.
C. Geomagnetic Activity Summary
The geomagnetic field was quiet until the 12-15 UTC synoptic period, when the CIR and CH HSS caused an overall response to active levels, followed by minor and moderate geomagnetic storming conditions during the 15-18 UTC synoptic period. The escalation of activity was likely due to the the prolonged period of negative Bz during CIR passage and CH HSS onset.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 074  SSN 011  Afr/Ap 019/027   X-ray Background 
F. Comments
  None

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