Viewing archive of Sunday, 28 July 2002

Geophysical report

Solar and Geophysical Activity Summary 2002 Jul 28 0245 UTC
Prepared by the NOAA © SWPC and processed by

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 209 Issued at 0245Z on 28 Jul 2002 This report is compiled from data received at SWO on 27 Jul
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
1029 1029 1029                       130
1438 1438 1438                       120
2041 2044 2048                       200
2110 2110 2110                       130
B. Proton Events
The greater than 10 MeV proton event that began at 22/0655 UTC ended at 27/0320 UTC. The maximum for this event was 28 pfu at 23/1025 UTC.
C. Geomagnetic Activity Summary
Geomagnetic field activity was at unsettled to active levels during most of the period.
D. Stratwarm
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 231  SSN 323  Afr/Ap 014/019   X-ray Background C9.8
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 9.1e+06   GT 10 MeV 5.8e+05 p/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 4.80e+06 e/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 3 3 3 3 3 2 3 3 Planetary 4 3 3 4 4 3 4 3
F. Comments
  Afr estimated using Boulder USGS magnetometer data.

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