Viewing archive of Saturday, 17 September 2005
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 2005 Sep 17 0248 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 260 Issued at 0245Z on 17 Sep 2005 This report is compiled from data received at SWO on 16 SepA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0141 0149 0156 0808 S13W26 M4.4 1b 220 0450 0000 1638 IV 1735 1748 1810 0808 S11W33 M1.3 Sf 26 1918 1936 1948 0808 S11W37 M3.5 1f 100 2238 0000 1002 IV
B. Proton Events
The greater than 10 MeV proton event that began
at 08/0215 UTC and reached a maximum of 1880 pfu at 11/0425 UTC
ended at 16/0025 UTC.
C. Geomagnetic Activity Summary
The geomagnetic field was at quiet
to active levels. Active levels were the result of the high solar
wind speeds early in the UTC day. The solar wind speed declined
over the past 24 hours from about 700 km/s to about 575 km/s.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 112 SSN 051 Afr/Ap 015/018 X-ray Background B3.3 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 3.5e+07 GT 10 MeV 4.1e+05 p/(cm2-ster-day) (GOES-11 satellite synchronous orbit W113 degrees) Daily Electron Fluence GT 2 MeV 1.20e+09 e/(cm2-ster-day) (GOES-12 satellite synchronous orbit W74 degrees) 3 Hour K-indices Boulder 4 4 3 4 3 1 2 2 Planetary 4 4 3 4 3 2 3 2
F. Comments
The greater than 2 MeV electron fluence at geosynchronous orbit was very high today.
All times in UTC
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