Viewing archive of Saturday, 21 December 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 Dec 21 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 355 Issued at 0245Z on 21 Dec 2002 This report is compiled from data received at SWO on 20 DecA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 1125 1128 1130 C2.7 290 73 1313 1318 1320 0226 S25W34 M6.8 Sf 2300 750 II 2138 2147 2207 0223 N23W21 Sf IV
B. Proton Events
The greater than 10 MeV proton flux at
geosynchronous orbit became elevated following the M2.7 event early
in the period but did not exceed event threshold levels.
C. Geomagnetic Activity Summary
The geomagnetic field was at quiet
to minor storm levels. The elevated conditions are due to a
geoeffective recurrent positive polarity coronal hole high speed
stream. The greater than 2 MeV electron flux reached moderate
levels late in the day.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 197 SSN 203 Afr/Ap 013/016 X-ray Background C1.0 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 2.5e+06 GT 10 MeV 1.2e+05 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 1.20e+06 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 2 4 2 2 3 3 3 3 Planetary 3 4 2 3 3 3 3 4
F. Comments
None
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