Viewing archive of Monday, 17 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: 20050117SGAS.txt :Issued: 2005 Jan 17 0250 UT Prepared by the NOAA © SWPC and processed by

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 017 Issued at 0245Z on 17 Jan 2005 This report is compiled from data received at SWO on 16 Jan
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
 0505 0505 0505                       2800                          
 0754 0758 0802  0720        C4.4                      IV           
 2155 2203 2222  0720 N13W16 M2.4  1n        54                     
B. Proton Events
A proton event at greater than 10 MeV began at 16/0210 UTC in response to an X2 flare which occurred at 15/2302 UTC. Peak flux observed so far was 365 pfu at 16/1840 UTC. The event remains in progress.
C. Geomagnetic Activity Summary
The geomagnetic field ranged from quiet to active levels.
D. Stratwarm
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 145  SSN 099  Afr/Ap 012/012   X-ray Background C1.6
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 1.4e+08   GT 10 MeV 1.3e+07 p/(cm2-ster-day)
(GOES-11 satellite synchronous orbit W107 degrees)
Daily Electron Fluence
GT 2 MeV 2.20e+08 e/(cm2-ster-day)
(GOES-12 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 2 2 3 2 3 4 2 3 Planetary 2 2 2 2 3 3 2 3 
F. Comments
  The Afr index reported in Part E is estimated from
Boulder observations.

<< Go to daily overview page

Latest news


A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!

Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare2024/03/28X1.1
Last M-flare2024/04/16M1.1
Last geomagnetic storm2024/03/25Kp5 (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
March 2024104.9 -19.8

This day in history*

Solar flares
*since 1994

Social networks