The nation's weather

AP News
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Posted: Dec 31, 2009 4:56 AM

Wet and active weather was expected to develop across the Eastern U.S. on New Year's Eve.

A storm system along the Southeast and Mid-Atlantic coasts was forecast to produce a swath of rain, sleet and snow as it moves up the Eastern Seaboard during the next couple of days.

As the system exits, another storm system was expected to develop over the central Gulf Coast and move northeast into the Carolinas. Significant moisture from the Gulf of Mexico and the Atlantic Ocean were expected to accompany the storm and spark numerous showers and thunderstorms along central Gulf Coast and the Southeast coast. Inland showers were forecast in the Mid-Atlantic.

Gulf moisture was expected to interact with a cold front pushing through the Midwest on Thursday. The combination could produce snow showers in the Great Lakes and the Ohio Valley.

Out West, an approaching Pacific storm and moist onshore flow were expected to produce light to moderate coastal rain showers and mountain snow across the Pacific Northwest, Northern Intermountain West and northern California. High pressure building over southern California could keep the region under dry and warmer weather conditions.

The Central U.S. was expected to enter the New Year with well below average temperatures as a cold ridge of high pressure builds over the region.

On Wednesday, temperatures in the Lower 48 states ranged from a low of -15 degrees at Wolf Point, Mont., to a high of 78 degrees at West Kendall, Fla.