Viewing archive of Thursday, 21 April 2011
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 2011 Apr 21 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 111 Issued at 0245Z on 21 Apr 2011 This report is compiled from data received at SWO on 20 AprA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0021 0021 0021 200 0025 0025 0025 210 1957 1957 1957 260
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic field was at quiet
to active levels.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 117 SSN 090 Afr/Ap 011/016 X-ray Background B4.1 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.6e+05 GT 10 MeV 1.3e+04 p/(cm2-ster-day) (GOES-13 satellite synchronous orbit W76 degrees) Daily Electron Fluence GT 2 MeV 4.40e+06 e/(cm2-ster-day) (GOES-13 satellite synchronous orbit W76 degrees) 3 Hour K-indices Boulder 3 4 4 3 3 3 1 1 Planetary 3 5 4 3 3 3 2 1
F. Comments
None
All times in UTC
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