Viewing archive of Thursday, 28 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 28 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 059 Issued at 0245Z on 28 Feb 2002 This report is compiled from data received at SWO on 27 Feb
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
0446 0452 0505  9845 N13E26       Sf               II
1550 1558 1604  9839 S18W69 M1.6  Sf
1629 1629 1629                       220
2356 0012 0048       S27W90 M2.2
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic field was quiet to unsettled.
D. Stratwarm
STRATWARM ALERT/ WEDNSDAY/ STRATWARM EXISTS THROUGHOUT THE STRATOSPHERE DISTURBED CIRCULATION PATTERN WITH THE WARM AIR REGION OVER THE POLAR REGION AND EASTERN ASIA AND A DISPLACED VORTEX OVER NORTHERN SIBERIA, LEADING TO A REVERSED TEMPERATURE GRADIENT BETWEEN THE POLE AND 60 N FROM 50 TO 3 HPA AND WEAK MEAN ZONAL EASTERLY WINDS AT 60 N FROM 5 TO 2 HPA
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 199  SSN 192  Afr/Ap 005/004   X-ray Background C1.5
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 7.8e+04   GT 10 MeV 1.2e+04 p/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 3.60e+05 e/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 3 1 1 1 2 2 2 2 Planetary 2 0 1 1 2 2 2 2
F. Comments
  None

All times in UTC

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