Viewing archive of Tuesday, 12 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 12 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 255 Issued at 0245Z on 12 Sep 2017 This report is compiled from data received at SWO on 11 SepA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0307 0307 0308 130 0319 0319 0319 130 0434 0434 0434 110 0439 0439 0439 150 0501 0501 0501 120 0508 0508 0508 100 0515 0515 0515 100 0722 0722 0722 140 0911 0911 0911 100 0946 0947 0947 200 1055 1055 1055 110 2000 2001 2001 1300
B. Proton Events
The greater than 10 MeV proton flux was at
(Moderate-Strong radiation storm) levels, with a peak flux of 1,490
pfu at 11/1145 UTC. The greater than 100 MeV proton flux event that
began at 10/1625 UTC and reached a peaked of 68 pfu at 10/2215 UTC,
was still at 60 pfu at 11/0045 UTC before declining to near 10 pfu
at the end of the period.
C. Geomagnetic Activity Summary
The geomagnetic field began the
period at active levels before decreasing to unsettled, then quiet
levels for the remainder of the period.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 080 SSN 023 Afr/Ap 008/010 X-ray Background B2.6 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 6.5e+08 GT 10 MeV 9.4e+07 p/(cm2-ster-day) (GOES-13 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 1.70e+08 e/(cm2-ster-day) (GOES-13 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 4 3 3 2 2 3 2 2 Planetary 4 3 2 2 2 1 2 2
F. Comments
None
All times in UTC
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