Viewing archive of Tuesday, 1 April 2003
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 2003 Apr 01 0245 UTCPrepared 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 MarA. 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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