Viewing archive of Friday, 12 April 2002
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 2002 Apr 12 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 102 Issued at 0245Z on 12 Apr 2002 This report is compiled from data received at SWO on 11 AprA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0306 0306 0306 270 52 0402 0402 0402 120 0825 0825 0826 125 1616 1626 1633 9904 S15W33 C9.2 1f 95 II
B. Proton Events
At 11/1800 UTC a greater than 10 Mev proton
enhancement began with a current level of 1.0 pfu at geosynchronous
orbit.
C. Geomagnetic Activity Summary
The geomagnetic field was at quiet
to unsettled levels.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 197 SSN 235 Afr/Ap 009/013 X-ray Background C1.0 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 3.4e+05 GT 10 MeV 2.5e+04 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 7.40e+05 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 2 1 2 3 3 3 2 2 Planetary 2 1 2 3 3 4 3 4
F. Comments
None
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