Viewing archive of Saturday, 31 March 2001

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 2001 Mar 31 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 090 Issued at 0245Z on 31 Mar 2001 This report is compiled from data received at SWO on 30 Mar
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
0425 0430 0440  9393 N13W25       Sf 3700
0511 0515 0520  9393 N14W24 M2.2  1n 1800   91
1522 1528 1548  9397 S08W04 C4.9  Sf 370
1559 0000 1605                                     II
1620 0000 1626                                     II
1839 1839 1844                       950
B. Proton Events
None
C. Geomagnetic Activity Summary
Activity in the geomagnetic field has been unsettled the past 24 hours. Some discontinuity was observed at the ACE spacecraft and at Earth between 30/1800 UTC and 30/1900 UTC. The event appeared to be small and is likely the result of solar activity prior to 29 March. The small proton event that began at 29/1000 UTC reached a maximum flux of 35 pfu in the >10 MeV GOES detector and remains above 10 pfu today.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 257  SSN 349  Afr/Ap 008/010   X-ray Background C3.4
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 2.7e+07   GT 10 MeV 2.1e+06 p/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 5.20e+06 e/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 2 2 2 3 4 3 2 3 Planetary 1 2 2 3 3 3 3 3
F. Comments
  None

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