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Associated Press

Posted on February 25, 2014 at 5:34 AM

Updated Tuesday, Feb 25 at 5:36 AM

Weather Underground Forecast for Tuesday, Feb. 25, 2014

Active weather will continue to spill across the northwestern U.S. on Tuesday, while a frontal boundary will linger over the Gulf of Mexico.

A frontal boundary will linger over the Gulf of Mexico on Tuesday, driving showers and thunderstorms across a handful of states. As winds begin to shift northward, stormy weather will move over the southern Plains and the lower Mississippi Valley. Moderate thunderstorms are also expected to develop across the Southeast. Towards the afternoon and evening, low pressure will begin to trek northward along the Eastern Seaboard, bringing a mixture of rain and snow to the Mid-Atlantic. Snow showers will also be possible along portions of the central Appalachians.

An arctic air mass will continue to sweep across the northern Plains, the upper Midwest and the Great Lakes on Tuesday. Temperatures are forecast to be 20 to 40 degrees below across the region.

Just to the west, rain and snow will accompany a frontal boundary extending across the Pacific Northwest and the Intermountain West. Rainy weather will be possible from northern California to Washington, while snow showers are expected to occur across the Cascades, the Rockies and parts of the central Plains. The Southwest will stay mostly sunny due to a ridge of high pressure along the coast of southern California.

Temperatures in the Lower 48 states Monday have ranged from a morning low of -16 degrees at Langdon, N.D. to a high of 86 degrees at Homestead AFB, Fla.

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