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[March 03, 2011] (AP) More wet weather is expected in the Pacific Northwest and the northern half of California on Thursday as a trough of low pressure remains off the Pacific Northwest Coast.

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Significant moisture and a cold front will push across these regions with more periods of rain and threats of snow showers to areas from western Washington to parts of central California. Little or no snow accumulation is expected below 5,000 feet.

As disturbances associated with this system move farther inland across the West, limited rain and snow showers will be possible across the Intermountain West. Showery weather in the Pacific Northwest and northern and central California is expected to taper off by the end of the day. Another wet and windy weather system is expected to affect these regions over the weekend.

Meanwhile, east of the Continental Divide, high pressure over the Midwest and Plains will move to the Eastern Seaboard with drier and calmer weather conditions. As high pressure exits off to the east, a trough of low pressure will begin organizing over the nation's midsection by Thursday evening. Warm, Gulf moisture will accompany this system during development and may lead to some severe weather activity in the Ozarks on Friday.

Temperatures in the Lower 48 states Wednesday ranged from a morning low of minus 20 degrees at Crane Lake, Minn., to a high of 88 degrees at Pecos, Texas.

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Online:

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National Weather Service:
http://iwin.nws.noaa.gov/

Intellicast:
http://www.intellicast.com/

[Associated Press article from Weather Underground]