Viewing archive of Tuesday, 17 February 2004
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 2004 Feb 17 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 048 Issued at 0245Z on 17 Feb 2004 This report is compiled from data received at SWO on 16 FebA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0235 0236 0236 130 0551 0551 0551 190
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic field was quiet to
unsettled. The high speed coronal hole stream that produced the
minor disturbance over the past several days has declined
considerably. Solar wind speed peaked yesterday near 800 km/s, but
gradually decreased to 500 km/s by the
end of the period.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 099 SSN 081 Afr/Ap 006/007 X-ray Background A9.0 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.2e+06 GT 10 MeV 1.3e+04 p/(cm2-ster-day) (GOES-11 satellite synchronous orbit W101 degrees) Daily Electron Fluence GT 2 MeV 1.30e+09 e/(cm2-ster-day) (GOES-12 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 3 1 1 2 2 2 2 1 Planetary 3 1 1 3 3 2 2 1
F. Comments
The greater than 2 MeV electron fluence at geosynchronous orbit was at very high levels.
All times in UTC
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