Tuesday, January 20, 2015

Weather Underground National Forecast for Tuesday,January 20,2015

By: nationalsummary , 11:00PM,GMT on January 19,2015

Weather Underground Forecast for Tuesday,January 20,2015

An area of low pressure will move across the Midwest and the Ohio Valley on Tuesday, while a ridge of high pressure will persist over the eastern Pacific.

A weak low pressure system will drift east southeastward over the Midwest and the Ohio Valley. This system will bring a chance of light snow showers to the upper Midwest, the Great Lakes, the northern Ohio Valley and the interior Mid-Atlantic. A light mixture of rain and snow will be possible from central Illinois to the southern Ohio Valley, while light rain will develop across central Plains, the middle Mississippi Valley and the Tennessee Valley. Additionally, early morning snow showers will be possible over northern New England as a low pressure system moves northeastward over eastern Canada. High pressure will keep weather conditions dry from the southern Plains to the Deep South. There will be a slight chance of afternoon and evening showers over the eastern Gulf Coast due to a trough of low pressure over the Gulf of Mexico.

Meanwhile, unsettled weather will persist across the upper Intermountain West through Tuesday morning as a cold front drags southeastward over the region. A ridge of high pressure will persist over the eastern Pacific, keeping weather conditions calm from the Pacific Northwest to the Southwest. Temperatures are forecast to range between the mid to upper 70s across the Desert Southwest.

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