The nation's weather

AP News
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Posted: Mar 11, 2011 4:45 AM
The nation's weather

Wet and snowy weather will continue across the Northeast and Great Lakes, while snow returns to the Northern Rockies on Friday.

A low pressure system that brought heavy rain to the East Coast on Thursday continues pushing northeastward over towards Quebec. Counter-clockwise flow around this system will pull cold and moist air into the Great Lakes and Ohio River Valley. High temperatures will drop back into the 30s, allowing for snow to develop across the region. Due to flow from the north, lake effect snow showers will develop along the southern shores of the lakes. Expect to 3 to 5 inches of snow across northern Ohio, while northeastern Michigan, northwestern Pennsylvania and eastern New York will see 1 to 3 inches of lake effect snow. The Appalachians will also see 1 to 2 inches of new snow, with more at highest elevations. High temperatures will remain in the 40s and 50s across the Eastern Seaboard, thus, rain showers will persist across these areas. Cool overnight temperatures will allow for some freezing rain across New England early Friday morning, with rainfall totals ranging from 1 to 2 inches by evening. Flood advisories remain in effect across the Northeastern quarter of the nation.

Meanwhile in the West, a low pressure system and associated cold front that triggered heavy snow and periods of heavy rain over the Pacific Northwest will continue moving eastward along the U.S. and Canadian border. This system will bring significant snow to the Northern Rockies on Friday, with snowfall accumulation up to a foot in many areas. Winter weather advisories have been issued across the region, thus, caution is urged when driving over high mountain passes.

Temperatures in the Lower 48 states Thursday ranged from a morning low of -11 degrees at Aberdeen, S.D., to a high of 84 degrees at Thermal, Calif.

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Online:

Weather Underground: http://www.wunderground.com

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

Intellicast: http://www.intellicast.com