Wednesday, April 27, 2016

Weather Underground National Forecast for Wednesday,April 27,2016

By: nationalsummary , 10:00PM,GMT on April 26,2016





 
Weather Underground Forecast for Wednesday,April 27,2016

An active weather pattern will impact the Mississippi Valley on Wednesday, while a trough of low pressure deepens over the West Coast.

A low pressure system will transition slowly eastward from the central Plains to the middle Mississippi Valley. This system will bring a mixture of rain and snow to the central Rockies throughout Wednesday morning. Rain and embedded thunderstorms will develop from the northern Plains to the upper Mississippi Valley. A cold frontal boundary stretching southward will generate strong to severe thunderstorms across the central and southern Plains, as well as the middle and lower Mississippi Valley. These thunderstorms will be capable of producing large hail, dangerous straight line winds and isolated tornadoes. By the late evening, thunderstorms will spread eastward over the southern Mid-Atlantic and the Southeast. Most of the northern Mid-Atlantic and New England will experience cool and dry conditions. A light mixture of rain and snow will be possible in northern Maine.

Out west, a trough of low pressure will move from the eastern Pacific to the West Coast. This system will usher light to moderate rain and high elevation snow across the Pacific Northwest, northern California, the Great Basin and the northern Rockies. Light precipitation will move southward and eastward over central California and the central Rockies by the latter half of Wednesday. Isolated thunderstorms will be possible across parts of California and northwest Arizona.

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