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Nation's Weather: Cold Temperatures Greet 2010

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Another round of active weather was expected to develop Saturday in the nation's northwestern and northeastern regions.

In the West, coastal rain showers and high-elevation snow was expected to keep falling across the Pacific Northwest as moist onshore flow poured across the coast. Meanwhile, a Pacific storm system from Friday will leave the region and head east; energy associated with this system was predicted to crank out light rain and mountain snow in the Intermountain West. Elsewhere, high pressure building over the coast was expected to keep active weather north of California on Saturday, allowing drier and milder weather to return to much of the state through the weekend.

In the East, low temperatures and winter precipitation were predicted to develop from the Great Lakes through the Northeast as a deepening low-pressure trough supported a strengthening storm system off the New England coast. Strong flow was expected to wrap around the system, pulling cold arctic air across the warm Great Lake waters. This activity was anticipated to translate into swaths of light lake-effect snow and windy conditions. Heavier snowfall along with strong northerly winds were expected throughout northern New England. Meanwhile, high pressure was predicted to keep the Southeast under quiet and dry weather conditions.

In the Central U.S., a cold ridge of high pressure with below-average temperatures was expected to remain locked over the Midwest through the weekend.

Temperatures in the Lower 48 states Friday ranged from a low of -28 degrees at Westby, Mont. to a high of 83 degrees at Daytona Beach, Fla.

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