Viewing archive of Monday, 16 April 2001

Geophysical report

Solar and Geophysical Activity Summary 2001 Apr 16 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 106 Issued at 0245Z on 16 Apr 2001 This report is compiled from data received at SWO on 15 Apr
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
1319 1350 1355  9415 S20W85 X14.4 2b 61000  48000  II/IV
1632 1632 1632                       150
1700 1700 1709                       110    65
B. Proton Events
Solar proton events at greater than 100 MeV and greater than 10 MeV followed the X14 flare. The greater than 100 MeV event began at 15/1405 UTC, reached a maximum of 146 PFU at 15/1525 UTC, then gradually decreased to 12 PFU by the close of the period. The greater than 10 MeV event began at 15/1410 UTC and reached a maximum of 951 PFU at 15/1920 UTC. The greater than 10 MeV flux was 551 PFU at the close of the period and slowly decreasing.
C. Geomagnetic Activity Summary
Activity ranged from quiet to active levels.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 134  SSN 100  Afr/Ap 013/013   X-ray Background B5.5
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 3.9e+07   GT 10 MeV 2.1e+07 p/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 2.40e+08 e/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 3 4 3 2 3 3 2 2 Planetary 3 4 3 2 4 3 2 3
F. Comments
  None

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