Viewing archive of Tuesday, 19 February 2002

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 2002 Feb 19 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 050 Issued at 0245Z on 19 Feb 2002 This report is compiled from data received at SWO on 18 Feb
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
0321 0321 0321                       140
0529 0529 0529                       200
0531 0537 0537                       100
1409 1409 1409                       460
2018 2115 2158  9830 S20E16 M1.0  Sf
B. Proton Events
None
C. Geomagnetic Activity Summary
Activity ranged from quiet to active levels. An active period occurred during 18/2100-2400 UTC.
D. Stratwarm
Stratwarm alert exists Stratwarm Monday The criteria for a major warming are fulfilled. There are mean zonal easterly winds at 60N from the 10 HPA level upwards and a reversed temperature gradient between 60N and the pole from 50 HPA up to 1 HPA.
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 193  SSN 103  Afr/Ap 011/009   X-ray Background B7.2
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 2.8e+05   GT 10 MeV 1.2e+04 p/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 9.50e+05 e/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 1 2 2 2 2 3 3 4 Planetary 1 2 2 2 1 3 3 4
F. Comments
  Afr estimated based on Boulder USGS magnetometer data.

All times in UTC

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