A robust area of low pressure will emerge over the central third of the country on Wednesday, while a Pacific cold front affects the Northwest.
A strong area of low pressure will move east northeastward across the central Plains and the middle Mississippi Valley. This system will start the day off by ushering moderate to heavy snow across the central Rockies, the central high Plains and the northern Plains. Winter storm warnings are in place for Wyoming, western Colorado and extreme western South Dakota. As the aforementioned system transitions across the Plains, it will usher moderate to heavy snow over the upper Mississippi Valley and the Great Lakes. Winter storm watches are in effect for northeast Colorado, eastern Wyoming, northwest Kansas, Nebraska, southeast South Dakota, northern Iowa, southern Minnesota, Wisconsin and Michigan. A separate wave of low pressure will bring a mixture of rain, freezing rain and snow to the northern Mid-Atlantic and New England.
Out west, a Pacific frontal system will generate light to moderate rain in western Oregon and western Washington. Locally heavy rain and high elevation snow can be expected along western facing slopes across the Washington Olympics and the northern Cascades. Dry weather will continue over the Southwest as high pressure builds along the coast of southern California.
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