Viewing archive of Tuesday, 21 January 2003

Geophysical report

Solar and Geophysical Activity Summary 2003 Jan 21 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 021 Issued at 0245Z on 21 Jan 2003 This report is compiled from data received at SWO on 20 Jan
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
0941 0941 0942                       330
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic field was at quiet to active levels with a brief period of minor storm conditions (between 20/0000 to 0300 UTC) at high latitudes. Coronal hole high speed stream effects from a southern polar extension are believed to be responsible for the elevated activity. The greater than 2 MeV electron flux at geosynchronous orbit reached moderate levels today.
D. Stratwarm
STRATWARM ALERT/MONDAY/STRATWARM EXISTS. WARMING CONTINUES OVER THE POLAR REGION, FURTHER WEAKENING. REVERSED TERPERATURE GRADIENT BETWEEN 60N AND THE POLE FROM 50 TO 5 HPA. EASTERLY ZONAL MEAN ZONAL WIND AT 60N BETWEEN 5 AND 2 HPA.
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 138  SSN 184  Afr/Ap 016/017   X-ray Background B4.2
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 2.0e+05   GT 10 MeV 1.3e+04 p/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 4.70e+06 e/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 4 4 3 3 2 3 3 2 Planetary 5 4 2 3 3 3 3 2
F. Comments
  None

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