Viewing archive of Sunday, 2 February 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 Feb 02 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 033 Issued at 0245Z on 02 Feb 2003 This report is compiled from data received at SWO on 01 FebA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0848 0905 0938 0276 M1.2
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic field ranged from
quiet to active levels during the past 24 hours. Quiet conditions
prevailed for most of the day, but an increase to unsettled to
active began at 1500 UTC. A marked increase in solar wind velocity
and total magnetic field strength was observed beginning at 1300
UTC, but a predominantly positive value for Bz suppressed activity
until 1900 UTC, when Bz turned weakly southwards. The interpretation
of the enhanced solar wind flow is not obvious, but seems most
consistent with the passage of transient flow due to the halo CME
that occurred on 30 January. The great than 2 MeV electron fluxes
reached high levels during the past 24 hours.
D. Stratwarm
STRATWARM ALERT/SATURDAY/STRATWARM EXISTS
STILL DISTURBED TEMPERATURE DISTRIBUTION IN THE MIDDLE AND UPPER
STRATOSPHERE WITH A WARM REGION OVER NORTHEASTERN EUROPE/NORTHERN
SIBERIA, LEADING TO A REVERSED TEMPERATURE GRADIENT BETWEEN 60N AND
THE POLE AT 2 TO 1 HPA.
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 126 SSN 075 Afr/Ap 011/013 X-ray Background B4.5 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.9e+05 GT 10 MeV 1.3e+04 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 1.80e+08 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 2 2 2 2 2 3 4 3 Planetary 3 2 1 2 2 2 5 4
F. Comments
None
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