Viewing archive of Friday, 20 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 20 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 354 Issued at 0245Z on 20 Dec 2002 This report is compiled from data received at SWO on 19 DecA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0217 0217 0217 120 0419 0419 0419 1100 1105 1105 1105 100 1856 1856 1857 230 1901 1901 1901 810 2134 2153 2217 0229 N15W09 M2.7 2n 640 210 II/IV
B. Proton Events
The greater than 10 MeV proton flux was on the
rise at the time of this writing (1.4 pfu at geosynchronous orvit)
in response to the M2.7/2n flare that occurred at 19/2153 UTC.
C. Geomagnetic Activity Summary
The geomagnetic field was at
unsettled to minor storm levels. A favorably positioned recurrent
coronal hole and the resulting high speed stream are responsible for
the elevated conditions.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 193 SSN 225 Afr/Ap 020/021 X-ray Background B9.2 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 5.5e+05 GT 10 MeV 1.2e+04 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 1.90e+05 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 3 3 3 4 3 4 3 3 Planetary 3 3 4 5 4 4 4 2
F. Comments
None
All times in UTC
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