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Viewing archive of Monday, 18 July 2005

Geophysical report

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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: 20050718SGAS.txt :Issued: 2005 Jul 18 0250 UT Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 199 Issued at 0245Z on 18 Jul 2005 This report is compiled from data received at SWO on 17 Jul
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
 0127 0127 0127                       100
B. Proton Events
The greater than 10 MeV proton event that began on 14/0245Z, had a peak flux of 134 pfu at 15/0345Z, and underwent an injection of flux at 17/1735Z allowing for the event to remain in-progress at near 17 pfu at the time of this writing. The source believed responsible for the increase in proton flux was the back-sided activity relating to the full halo CME first seen on LASCO C2 imagery at 17/1130Z.
C. Geomagnetic Activity Summary
The geomagnetic field ranged from quiet to minor storm levels. A weak transient signature (likely from the X1 related CME activity seen on 14 July) was detected at the ACE spacecraft near 17/0000Z where the wind speeds increased from near 425 km/sec to 500 km/sec.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 074  SSN 012  Afr/Ap 018/022   X-ray Background A5.4
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 1.5e+07   GT 10 MeV 6.5e+05 p/(cm2-ster-day)
(GOES-11 satellite synchronous orbit W115 degrees)
Daily Electron Fluence
GT 2 MeV 1.10e+07 e/(cm2-ster-day)
(GOES-12 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 3 2 3 4 3 3 2 5 Planetary 3 2 3 5 3 3 3 5
F. Comments
  None

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Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future

Gillam, MB, Yellowknife, NT
Fairbanks, AK
The strength of the interplanetary magnetic field is moderate (13.89nT), the direction is North (0.65nT).

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