Viewing archive of Wednesday, 17 July 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 Jul 17 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 198 Issued at 0245Z on 17 Jul 2002 This report is compiled from data received at SWO on 16 JulA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0008 0011 0015 C4.6 IV 0328 0328 0329 120 1202 1221 1237 0036 S08E71 Sf II 1331 1410 1421 0030 N23W07 C8.5 Sf 200 64 1912 1915 1917 C1.4 160 2122 2138 2148 0030 N19W14 C2.6 Sf 280
B. Proton Events
A greater than 10 MeV proton event began at
geosynchronous orbit at 16/1750 UTC. The 10 MeV flux at the close of
the period was 32 pfu and gradually increasing.
C. Geomagnetic Activity Summary
Geomagnetic field activity was at
quiet to active levels. Active levels occurred at some high latitude
stations during 16/1800-2100 UTC.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 172 SSN 182 Afr/Ap 011/011 X-ray Background C2.0 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 3.4e+06 GT 10 MeV 7.3e+05 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 3.90e+05 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 2 3 2 2 3 3 3 3 Planetary 2 3 2 2 2 2 4 4
F. Comments
Afr estimated based on Boulder USGS magnetometer data.
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