Viewing archive of Friday, 20 July 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 Jul 20 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 202 Issued at 0245Z on 20 Jul 2012 This report is compiled from data received at SWO on 19 JulA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0417 0558 0656 1520 M7.7 260 1000 II/IV 1832 1836 1838 1525 S23E25 C1.5 Sf 100 2144 2148 2151 1525 C1.1 180 2243 2244 2244 150
B. Proton Events
The greater than 10 MeV proton flux at
geosynchronous orbit exceeded the 10 pfu threshold at 17/1715Z and
was still ongoing. A maximum of 136 pfu was observed at 18/0600Z.
C. Geomagnetic Activity Summary
The geomagnetic field was at quiet
to unsettled levels.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 100 SSN 039 Afr/Ap 006/006 X-ray Background B5.8 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 2.9e+07 GT 10 MeV 4.0e+06 p/(cm2-ster-day) (GOES-13 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 7.40e+08 e/(cm2-ster-day) (GOES-13 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 1 2 2 2 2 2 2 2 Planetary 2 2 1 1 2 2 2 2
F. Comments
The greater than 2 MeV electron fluence at geosynchronous orbit reached high levels.
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