The nation's weather

AP News
Posted: Nov 20, 2011 4:51 AM
The nation's weather

A cold front will bring rain and snow to the Great Lakes and Midwest, with showers and thunderstorms developing across the South.

A low pressure area and associated cold front will move quickly eastward from the upper Midwest into the Great Lakes and the Northeast. The system will continue to push a cold front eastward, spreading down the Ohio River Valley and the Tennessee Valley into the lower Mississippi River region Sunday.

This system will draw ample moisture from the Gulf of Mexico, allowing scattered showers and thunderstorms to develop from the Tennessee Valley to the lower Mississippi River. Some storms may turn severe with strong winds, hail and heavy rains. In the North, most of the Midwest, Northeast, and Great Lakes will see rain showers. Downwind shores of the Great Lakes may see some lake effect snow showers.

Out West, a low pressure system heading down the West Coast will turn southeastward, pushing a cold front onshore. This moisture-laden system will be capable of producing some heavy rains with heavy snow in the Sierras. Rainfall totals will range from a half of an inch to an inch, while snowfall totals will range from 2 to 4 inches and up to 8 inches at the highest elevations. Elsewhere, the Pacific Northwest as well as the northern and central Rockies will dry out as a higher pressure area sets in.

Temperatures in the lower 48 states ranged Saturday from a morning low of -9 degrees at Lewistown, Mont., to a high of 93 degrees at Alice, Texas.



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