This article was originally posted on OpenSnow.com by Meteorologist Joel Gratz.
The western US and Canada got snow on Monday, December 4th and cold air will hang around through about December 8th. Then, the weather in the west will turn warm and stay dry through mid-December while the cold air and some snow will head east. In the east, expect a lot of snowmaking and terrain openings between December 7-15 and this will continue into the third week of December.
This week’s forecast
A storm will bring snow to the central and northern Rockies from Sunday through Monday evening. The deepest totals of 6-12 inches will be in Idaho, Montana, Wyoming, and northern Utah. Colorado should be in the range of 3-6 inches.
In the wake of the storm moving through the west, temperatures will stay chilly throughout the west which should allow for a few days of efficient snowmaking. But notice in the graphic below that as the west stays chilly (dotted circle), very cold air will head to the east (solid line with arrow).
The storm that will bring snow to the west on December 3-4 will bring rain to the east around December 6. But then, in the wake of the storm, the west will dry out while all of the action stays in the east.
All weather model forecasts from about December 7-15 show cold air in the east with multiple chances for snow while the west is warm and dry.
This weather pattern is great for the east where snowmaking will ramp up and there is a great chance that most mountains will have a lot of open terrain by the second and third week of December.
See Joel Gratz’s original post on OpenSnow.com
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