Viewing archive of Sunday, 25 August 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 Aug 25 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 237 Issued at 0245Z on 25 Aug 2002 This report is compiled from data received at SWO on 24 AugA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0049 0112 0131 0069 S02W81 X3.1 1f 280 1200 II/IV 0538 0548 0559 0087 S09E52 M1.8 1n 340 73 IV 0925 0928 0938 0085 S06E07 Sf 220 1112 1128 1141 M1.5 1302 0000 0115 IV 1706 1706 1706 120 2210 2210 2210 140 2338 2339 2339 160 2342 2343 2343 180
B. Proton Events
A greater than 100 MeV proton event began at
24/0130 UTC, reached a 29 pfu peak at 24/0210 UTC, and dropped below
the 1 pfu event threshold at 24/1825 UTC. A greater than 10 MeV
proton event began at 24/0140 UTC, reached a 317 pfu peak at 24/0835
UTC, and remains in progress.
C. Geomagnetic Activity Summary
The geomagnetic field was quiet to
unsettled.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 196 SSN 199 Afr/Ap 006/011 X-ray Background C3.0 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 4.7e+07 GT 10 MeV 1.7e+07 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 1.90e+07 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 3 1 1 2 3 2 1 2 Planetary 3 2 2 2 3 3 3 3
F. Comments
The Afr index reported in Part E is estimated from Boulder observations.
All times in UTC
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