Viewing archive of Saturday, 21 December 2002

Geophysical report

Solar and Geophysical Activity Summary 2002 Dec 21 0245 UTC
Prepared by the NOAA © SWPC and processed by

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 355 Issued at 0245Z on 21 Dec 2002 This report is compiled from data received at SWO on 20 Dec
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
1125 1128 1130              C2.7     290    73
1313 1318 1320  0226 S25W34 M6.8  Sf 2300   750    II
2138 2147 2207  0223 N23W21       Sf                  IV
B. Proton Events
The greater than 10 MeV proton flux at geosynchronous orbit became elevated following the M2.7 event early in the period but did not exceed event threshold levels.
C. Geomagnetic Activity Summary
The geomagnetic field was at quiet to minor storm levels. The elevated conditions are due to a geoeffective recurrent positive polarity coronal hole high speed stream. The greater than 2 MeV electron flux reached moderate levels late in the day.
D. Stratwarm
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 197  SSN 203  Afr/Ap 013/016   X-ray Background C1.0
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 2.5e+06   GT 10 MeV 1.2e+05 p/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 1.20e+06 e/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 2 4 2 2 3 3 3 3 Planetary 3 4 2 3 3 3 3 4
F. Comments

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