Heavy Snow, Freezing Rain and Widespread Showers

Heavy Snow, Freezing Rain and Widespread Showers.
watch
A stream of Pacific moisture will allow for widespread showers and
mountain snow to overtake the Northwest tonight and into Thursday. From


the Cascades to the northern and central Rockies, snow accumulations in


excess of a foot are expected with some of the higher elevations receiving


well over a foot. In preparation for this heavy snow event, Winter Storm


Warnings have been issued for the Cascades and northern Idaho and Winter


Storm Watches have been posted for parts of central Idaho, northern Utah,


and western and southern Wyoming.





The Northwest will not be the only region to receive snowfall the next


couple days. Snow over North Dakota tonight will head for the Upper


Midwest Thursday morning as a weak disturbance tracks towards the Great


Lakes. Snow will then reach the northern Great Lakes where some locations


have already picked up heavy snow amounts from lake effect snow squalls


earlier in the week. Winter Weather Advisories have been posted for areas


where 3-6" of snowfall accumulation is anticipated. Snow will taper off as


the disturbance heads northeast into eastern Ontario Friday morning.





Further south, an area of low pressure in the Gulf of Mexico tomorrow will


lift north and east on Friday. A combination of Atlantic and Gulf of


Mexico moisture will engulf the Southeast, causing showers to develop


Thursday and become widespread by Friday. Freezing rain and drizzle is


also possible in the southern Appalachians as moisture overruns


sub-freezing temperatures Friday morning. Icy conditions in these areas


are possible but eventually, warmer temperatures will overspread the


region and force a changeover to rain later in the day. Showers will race


north in time for the Friday evening rush hour in the Mid-Atlantic,


setting the stage for what will be a wet and cloudy Saturday in the


Northeast.

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