[CQ-Contest] X4.1 FLARE PEAK 0952 UTC 17-I-2005

nw7us at hfradio.org nw7us at hfradio.org
Mon Jan 17 05:08:35 EST 2005

Flare update - 0952 UTC

The entire HF spectrum is shut-down at the time of this e-mail, on the  
sunlit side of the Earth.  Recovery time is 1 hour, 37 minutes (approx.  
1130 UTC).  The flare from region 720 has maxed out at X4.1 (GEOS) (IPS  
reports X3.8).  The rise time was nearly two hours in length.  It is too  
early for me to tell if there is a signature radio sweep, though there  
might be a hint of a precursor.  I will issue an update if a CME has been  

In the meantime, the solar wind speed remains above 600 km/s, and it is  
anticipated that the Kp index will rise.  It is possible that we will yet  
see the major to severe geomagnetic storm.

73 de Tomas, NW7US (AAR0JA/AAA0WA)

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