Viewing archive of Wednesday, 20 December 2000

Geophysical report

Any mentioned solar flare in this report has a scaling factor applied by the Space Weather Prediction Center (SWPC). Because of the SWPC scaling factor, solar flares are reported as 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.
Solar and Geophysical Activity Summary 2000 Dec 20 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 355 Issued at 0245Z on 20 Dec 2000 This report is compiled from data received at SWO on 19 Dec
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
1257 1257 1258                       240
1411 1415 1419  9269 N15W12 C3.0  Sf 190
B. Proton Events
None.
C. Geomagnetic Activity Summary
The geomagnetic field was mostly quiet at mid latitudes, and quiet to unsettled at high latitudes for the past 24 hours.
D. Stratwarm
STRATWARM ALERT/TUESDAY/STRATWARM EXISTS. STRONG STRATOSPHERIC MINOR WARMING CONTINUES. SPLITTED VORTEX IN THE MIDDLE STRATOSPHERE WITH A MAJOR CENTER OVER CANADA AND A MINOR CENTER OVER WESTERN SIBERIA, WEAKENING AT 10HPA. THE ANTICYCLONE OVER THE NORTH ATLANTIC, MOVING EASTWARD, INTENSIFYING. THE MINOR WARMING OVER GREENLAND, MOVING NORTHEASTWARD. THE WARM REGION OVER ASIA, WEAKENING IN THE UPPER STRATOSPHERE REVERSED TEMPERATURE GRADIENT BETWEEN 60N AND THE POLE. A WARM REGION OVER THE MEDITERRANEAN SEA.
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 199  SSN 163  Afr/Ap 005/005   X-ray Background C1.3
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 5.4e+04   GT 10 MeV 1.1e+04 p/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 1.00e+06 e/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 2 1 1 2 2 2 2 1 Planetary 2 1 1 2 2 3 3 1
F. Comments
  None

All times in UTC

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