Viewing archive of Friday, 18 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 18 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 108 Issued at 0245Z on 18 Apr 2003 This report is compiled from data received at SWO on 17 AprA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0836 0838 0839 190 2009 2009 2009 150
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic field was mostly
unsettled to active during the past 24 hours with a minor storm
period from 0300-0900 UTC in the mid latitudes, and a minor storm
period at high latitudes from both 0300-1200 UTC and 1500-1800 UTC.
The coronal-hole induced high speed solar wind flow continues. The
greater than 2 MeV electron fluxes reached high levels today.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 101 SSN 037 Afr/Ap 026/030 X-ray Background B1.5 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 9.3e+06 GT 10 MeV 1.1e+04 p/(cm2-ster-day) (GOES-10 satellite synchronous orbit W135 degrees) Daily Electron Fluence GT 2 MeV 3.70e+08 e/(cm2-ster-day) (GOES-10 satellite synchronous orbit W135 degrees) 3 Hour K-indices Boulder 3 5 5 4 4 4 3 2 Planetary 3 5 5 5 4 5 3 3
F. Comments
None
All times in UTC
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