Viewing archive of Saturday, 28 January 2012

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 2012 Jan 28 0245 UTC
Prepared by the NOAA © SWPC and processed by

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 028 Issued at 0245Z on 28 Jan 2012 This report is compiled from data received at SWO on 27 Jan
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
 1302 1305 1309              C1.0     560                           
 1737 1837 1856  1402 N27W71 X1.7  1f 1100   810    II/IV           
B. Proton Events
Proton levels are high. A 10 MeV proton event began at 27/1905Z and reached a peak of 701 pfu at 28/0105Z. A 100 MeV proton event began at 27/1900Z and reached a peak of 11.9 pfu at 27/2140Z. These events are still in progress.
C. Geomagnetic Activity Summary
Geomagnetic activity was quiet to unsettled. Minor storm levels were observed at high latitudes.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 142  SSN 039  Afr/Ap 006/007   X-ray Background B5.2
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 1.6e+07   GT 10 MeV 4.7e+06 p/(cm2-ster-day)
(GOES-13 satellite synchronous orbit W74 degrees)
Daily Electron Fluence
GT 2 MeV 5.50e+07 e/(cm2-ster-day)
(GOES-13 satellite synchronous orbit W74 degrees)
3 Hour K-indices
Boulder 1 2 4 2 2 2 3 1 Planetary 1 2 3 2 2 1 2 1 
F. Comments
  The reported 10cm flux value was flare enhanced by an
X1.7 event that occurred at 27/1837Z.  

Estimated 10cm flux is
approximately 120 sfu.

All times in UTC

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