Viewing archive of Thursday, 21 March 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 Mar 21 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 080 Issued at 0245Z on 21 Mar 2002 This report is compiled from data received at SWO on 20 MarA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0353 0356 0408 9875 S18E61 Sf 230 0411 0412 0422 9875 S18E61 Sf 150 0742 0000 0745 II 0808 0833 0845 9875 S18E58 C1.9 Sf 190 0837 0838 0838 300 0936 0937 0937 470 1225 1225 1226 1100 1408 1408 1408 170 1554 1555 1559 110 2143 2143 2143 730 2338 2338 2338 440
B. Proton Events
The greater than 10 MeV proton event that began
at 18/1300 UTC and reached a maximum of 53 pfu at 19/0650 UTC
dropped below event threshold at 19/2340 UTC. However, the fluxes
remained enhanced and crossed threshold again at 20/1510 UTC in
response to a new interplanetary shock. The subsequent peak was 19
pfu at 1525 UTC, and the fluxes have remained below threshold since
20/1820 UTC.
C. Geomagnetic Activity Summary
The geomagnetic field ranged from
quiet to active levels. A sudden impulse was observed at 30/1329
UTC.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 188 SSN 141 Afr/Ap 010/007 X-ray Background B5.5 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 3.4e+07 GT 10 MeV 5.1e+05 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 9.70e+05 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 1 0 0 1 2 4 2 0 Planetary 1 1 0 1 3 4 3 2
F. Comments
None
All times in UTC
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