Viewing archive of Tuesday, 18 January 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.
:Product: 20050118SGAS.txt
:Issued: 2005 Jan 18 0250 UT
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.comJoint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 018 Issued at 0245Z on 18 Jan 2005 This report is compiled from data received at SWO on 17 JanA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0310 0321 0332 0720 M2.6 0659 0952 1007 0720 X3.8 2f 39000 12000 II/IV
B. Proton Events
The proton event at greater than 10 MeV that
began on 16/0210 UTC remains in progress. The X3 flare which
occurred at 17/0952 UTC has increased the current peak flux to 5040
pfu observed at 17/1750 UTC. A proton event at greater than 100 MeV
also resulted from the X3 flare, beginning at 17/1215 UTC and with a
current peak flux of 28 pfu observed at 17/1700 UTC.
C. Geomagnetic Activity Summary
The geomagnetic field ranged from
unsettled to severe storm levels. Solar wind conditions observed by
the NASA ACE spacecraft show a fairly complex onset of activity
which may suggest the arrival of a solar wind structure from
combined CMEs expected from previous major flares on 15 January.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 138 SSN 107 Afr/Ap 046/063 X-ray Background C1.5 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 6.2e+08 GT 10 MeV 1.1e+08 p/(cm2-ster-day) (GOES-11 satellite synchronous orbit W107 degrees) Daily Electron Fluence GT 2 MeV 1.40e+07 e/(cm2-ster-day) (GOES-12 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 4 4 3 6 6 6 5 3 Planetary 5 4 3 7 7 7 5 3
F. Comments
The Afr index reported in Part E is estimated from Boulder observations.
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