Viewing archive of Sunday, 8 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 08 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 251 Issued at 0245Z on 08 Sep 2002 This report is compiled from data received at SWO on 07 SepA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0439 0450 0456 C1.6 150 0512 0513 0513 110 0539 0539 0540 140 0721 0722 0722 130 0824 0824 0824 190 0838 0838 0838 110 1414 1415 1415 120 1519 1520 1520 100 1719 1719 1719 4700 1724 1724 1724 200 1735 1747 1754 C5.4 170 1819 1819 1819 220 1829 1829 1829 100 1830 1830 1830 130 2053 2054 2054 150
B. Proton Events
The greater than 10 MeV proton flux crossed the
10 pfu event threshold at 07/0440 UTC after a slow rise over the
previous 28 hours. Peak event flux so far was 208 pfu at 07/1650
UTC.
C. Geomagnetic Activity Summary
The geomagnetic field ranged from
quiet to severe storm levels. A shock in the solar wind was observed
by the NASA ACE spacecraft at 07/1609 UTC and was followed by a 7 nT
sudden impulse on the Boulder magnetometer at 07/1638 UTC.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 183 SSN 180 Afr/Ap 030/045 X-ray Background B9.4 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.0e+08 GT 10 MeV 2.1e+06 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 1.00e+07 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 3 3 3 3 4 6 6 5 Planetary 3 3 3 3 3 7 7 6
F. Comments
The Afr index reported in Part E is estimated from Boulder observations.
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