Viewing archive of Wednesday, 16 January 2002

Geophysical report

Solar and Geophysical Activity Summary 2002 Jan 16 0245 UTC
Prepared by the NOAA © SWPC and processed by

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 016 Issued at 0245Z on 16 Jan 2002 This report is compiled from data received at SWO on 15 Jan
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
B. Proton Events
Particle flux for >10MeV protons reached event level of 10 pfu at 15/1435 UTC, and the event remains in progress with a current flux of about 12 pfu. The slow enhancement in proton flux is likely from a west limb CME on 14 January, with the delay in proton enhancement due to the intervening effects of a coronal hole high speed stream.
C. Geomagnetic Activity Summary
The geomagnetic field was quiet. Particle fluxes for >2MeV electrons reached event level during the period. >2MeV electrons briefly exceeded 1000 pfu at geosynchronous orbit near local noon, as measured on GOES-8, during 15/1405-1615 UTC.
D. Stratwarm
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 218  SSN 155  Afr/Ap 006/006   X-ray Background C1.5
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 1.2e+07   GT 10 MeV 8.2e+05 p/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 3.20e+07 e/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 1 2 2 2 2 2 1 2 Planetary 1 2 2 2 2 2 2 2
F. Comments
  Afr estimated from Boulder A.  The GOES-8 X-ray
Spectrometer has been offline since 15/0020 UTC.  X-ray Background
estimated from GOES-10 (135W) data.

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