Snoqualmie Pass finally gets some needed snow; colder Thanksgiving temps on way for Snoqualmie Valley

[Article by Ryan Porter, who also owns Snoqualmie Weather. You can also keep up with his local weather forecasts on Twitter.]

Snoqualmie Pass was finally getting some much needed snow Sunday night into Monday morning, November 24th.  The mountain passes are expected to receive  6-12” through Tuesday.

The foothills are on the fringe for possible snow later Monday into Tuesday morning, but odds have diminished. The atmosphere will be drying out fast as the cold air moves in from the north, but if a typical north puget sound convergence zone setup shifts southeast, it’s possible to see a trace-2” in the foothills of Snoqualmie and North Bend – though this is looking less likely with almost every model run the past few days.  The Euro model’s mean ensemble run shows maybe flurries/dusting overnight Monday into Tuesday while GFS now calling for completely dry by the time cold enough air arrives.  

University of Washington WRF-GFS 4km resolution forecast. Right scale showing 24-hr snow accumulation (in inches) as of 4pm Tuesday

We’re transitioning to a flow from the north, ushering in modified arctic air into Western Washington through Thanksgiving and Apple Cup weekend.  Lows could be dipping into the low 20’s by Thanksgiving night.  Might want to wrap the pipes.

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