Viewing archive of Wednesday, 18 April 2001

Geophysical report

Solar and Geophysical Activity Summary 2001 Apr 18 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 108 Issued at 0245Z on 18 Apr 2001 This report is compiled from data received at SWO on 17 Apr
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
1139 1139 1140                       250
2118 2157 2216              M1.3
B. Proton Events
The greater than 100 MeV event that began at 15/1405 UTC ended at 17/0510 UTC. The greater than 10 MeV proton event that began at 15/1410 UTC ended at 17/1700 UTC.
C. Geomagnetic Activity Summary
Activity was at quiet to unsettled levels.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 126  SSN 089  Afr/Ap 008/007   X-ray Background B5.1
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 3.9e+07   GT 10 MeV 1.6e+06 p/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 2.80e+08 e/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 2 3 1 2 2 3 1 2 Planetary 2 3 2 2 2 3 2 2
F. Comments
  None

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