Viewing archive of Thursday, 21 March 2002

Geophysical report

Solar and Geophysical Activity Summary 2002 Mar 21 0245 UTC
Prepared 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 Mar
A. 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

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