Viewing archive of Tuesday, 1 April 2003

Geophysical report

Solar and Geophysical Activity Summary 2003 Apr 01 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 091 Issued at 0245Z on 01 Apr 2003 This report is compiled from data received at SWO on 31 Mar
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
None
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic ranged from quiet to minor storm levels, with occasional major storm periods at high latitudes. The high speed stream that began early on 30 March continues. An extended period of southward Bz began at around 1100Z and was responsible for the most disturbed periods.
D. Stratwarm
STRATWARM ANERT/ MONDAY/ STRATWARM EXISTS. A LARVE WARM REGION, CENTERED OVER NORTHERN SIBERIA, EXPANDS FURTHER POLEWARDS WHILE THE COLD REGION WEAKENS, I.E. THE FINAL WARMING PROGRESSES. THE VORTEX, HOWEVER, ONLY SLOWLY WEAKENS, INDICATING A LATE TRANSITION TO THE SUMMER CIRCULATION. STRATWARM ALERTS MESSAGES WILL BE DISCONTINUED UNTIL 1 DECEMBER.
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 160  SSN 165  Afr/Ap 026/031   X-ray Background B3.8
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 6.7e+05   GT 10 MeV 1.1e+04 p/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 3.70e+07 e/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 3 2 4 4 5 5 3 4 Planetary 3 3 3 4 6 6 4 4
F. Comments
  The greater than 2 MeV electrons at geosynchronous
orbit reached high levels.

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