Friday, December 6, 2013

National Weather Forecast for December 7,2013 from weatherunderground.com

Weather Underground Forecast for Saturday,December 7,2013

A cold frontal boundary will extend from the Gulf of Mexico to the coast of the Carolinas on Saturday, while a separate cold front will trek southward over the West Coast.

A cold front will trek over the Southeast on Saturday, as an active weather system will begin to wind down along the central and eastern thirds of the country. Freezing rain will still be possible across parts of Texas, Arkansas, Tennessee and Kentucky as a warm, muggy air mass interacts with this frontal boundary. Rain and thunderstorms can also be expected across a handful of states in the Southeast. Temperatures will remain 10 to 30 degrees below normal across the region on Saturday.

To the north, a high pressure system along central Canada will drive a cold air mass over the Great Lakes. This system will provide light snow showers to parts of the upper Midwest, and is also expected to trigger a lake effect snow event across parts of the Northeast. The northern tier of the Ohio Valley will avoid precipitation throughout the day.

A cold front will dive southward along the West Coast on Saturday. Due to below normal temperatures along the western third of the country, snow levels are expected to drop below 3000 feet in northern California and the desert Southwest. The heaviest snow will likely fall along the central Sierra Nevadas, while moderate to heavy snow showers will also impact the central Rockies on Saturday.

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