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[November 19, 2011] (AP) More active weather was anticipated across the West on Saturday, while the East remained sunny and dry.

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A trough of low pressure over the northern Rockies was expected to continue moving eastward through the northern Plains and upper Midwest. This was expected to continue pushing a cold front southward, which would extend from the Great Lakes, through the central Rockies, and into southern California. The system was expected to produce strong flow from the north and continue pulling cold air in from western Canada. Widespread scattered snow showers were expected to develop along this system, with 2 to 4 inches of snow anticipated in the upper Midwest and northern Plains, up to 8 inches of new snow over the northern and central Rockies.

Meanwhile, behind this system, another trough of low pressure was expected to move onshore from the Pacific Northwest, allowing for rain and high-elevation snow showers to persist across Oregon and Washington.

Winter weather advisories were expected to remain in effect throughout the Northwestern U.S. High wind advisories were issued across the central Rockies, due to wind gusts from 25 to 35 mph, and from 50 to 60 mph at high mountain passes.

In the East, a ridge of high pressure remained the dominant weather feature across the eastern valleys and Eastern Seaboard. This was expected to produce more sunny skies and dry conditions. Chilly conditions were expected as overnight low temperatures were expected to dip into the 20s and 30s and daytime highs remain in the 50s.

Temperatures in the Lower 48 states Friday ranged from a morning low of 3 degrees at Havre, Mont., to a high of 86 degrees at Harlingen, Texas.

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Online:

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http://iwin.nws.noaa.gov/

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

[Associated Press article from Weather Underground]