Viewing archive of Saturday, 21 September 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 Sep 21 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 264 Issued at 0245Z on 21 Sep 2002 This report is compiled from data received at SWO on 20 SepA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0233 0234 0234 130 0508 0512 0517 0126 S24E75 M1.5 Sf 0656 0656 0656 330 0756 0758 0759 800 0808 0811 0812 720 0816 0816 0817 310 0921 0928 0933 0126 S24E73 M1.8 Sf 53 IV 1057 1058 1058 170 1204 1204 1204 990 1237 1239 1240 340
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic field was quiet to
unsettled. Solar wind speed began the period near 700 km/s following
the arrival of a CME earlier yesterday. However, a weak IMF with
sustained northward Bz offset any significant impact on the
geomagnetic field.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 164 SSN 237 Afr/Ap 005/006 X-ray Background B8.2 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 6.2e+05 GT 10 MeV 1.1e+04 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 2.60e+07 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 2 2 1 1 1 1 1 2 Planetary 3 2 1 1 2 2 3 2
F. Comments
None
All times in UTC
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