They also show the Seattle NWS with this dire comment!
Cliff Mass' blog shows great concern, but the MM5 as of this post was still on GFS track from earlier.
And as of 10AM the GFS has "come around" - so maybe 60/40% now on that southern track?
Area Forecast Discussion National Weather Service Seattle WA 950 AM PDT Thu Oct 13 2016
..the next strong low pressure system will have moisture from former typhoon Songda so that storm should be stronger. The GFS has that low making landfall on the Washington Coast Saturday evening and the GFS track is just right for a genuine windstorm for the interior of Western Washington. It will be interesting to see the 12z ecmwf solution.