The stage looks set early next week with all in place for some extreme cold in the West that will eventually push south and east.

Snowfall has continued to pile up over the Rockies and West from Christmas through today.

GFS suggests 1-3ft of snow cover widely into early next week.

GFS also continues to show a surface high pressure building close to 1060mb over Montana on Tuesday with thicknesses around 504 which means some very cold air.

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2-metre temps 6z Wed (New Years Eve), yes don’t be surprised to see 40 below zero over Wyoming Tuesday if not Wednesday morning.

GFS 500mb and 2-metre temp anomalies show the war setting up between extreme cold in the N Rockies vs warmth in Southeast.

That stronger than normal Southeast ridge will sharpen the baroclinic zone in the East day 7-10 as arctic air dives out of Canada, setting the stage for increased storm potential and wild weather

Check out the thermal gradient between Florida and Montana in the GFS 168 hour surface chart.

 

See video for more.

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