Viewing archive of Sunday, 15 April 2001

Geophysical report

Solar and Geophysical Activity Summary 2001 Apr 15 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 105 Issued at 0245Z on 15 Apr 2001 This report is compiled from data received at SWO on 14 Apr
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
1715 1811 1828  9415 S16W71 M1.0  Sf 210    31
1734 1737 1742                       250    150
1752 1752 1755                       52     55     II
2320 2323 2326  9415 S20W71 B7.9  Sf 110
B. Proton Events
There were no proton events detected at geosynchronous orbit. However, the greater than 10 MeV proton flux continued at enhanced levels (due to recent major flare activity) as it gradually declined toward background levels.
C. Geomagnetic Activity Summary
Activity was at unsettled to active levels until 14/0900 UTC, then decreased to quiet to unsettled levels.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 139  SSN 149  Afr/Ap 017/015   X-ray Background B5.1
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 4.1e+06   GT 10 MeV 1.7e+05 p/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 6.50e+07 e/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 3 4 4 3 3 3 3 2 Planetary 3 3 4 3 3 3 3 2
F. Comments
  None

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