US Air Quality

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Updated: 1:00 AM GMT on July 29, 2014
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Weather Summary

Weather Underground Forecast for Monday, July 28, 2014

A cold front will extend from the southern Plains to the Northeast on Monday, while monsoonal moisture will surge across the western third of the country.

A cold front will extend across the southern Plains, the lower Mississippi Valley, the Tennessee Valley, the Mid-Atlantic and the Northeast on Monday. As this frontal boundary collides with warm, humid air from the Gulf of Mexico, strong to severe thunderstorms will develop across a handful of states. Severe thunderstorms will be possible over southeast Louisiana, southern Mississippi, southern Alabama, northern Florida, southern Georgia, eastern South Carolina and southeast North Carolina. These thunderstorms will be capable of producing large hail, dangerous straight line winds and isolated tornadoes. In addition, rain and thunderstorms will develop across the northern Mid-Atlantic and the Northeast, which could lead to flash flooding over Upstate New York and northwest New England. Disorganized showers and thunderstorms will also be possible across parts of the southern Plains and the upper Mississippi Valley.

Meanwhile, monsoonal moisture will continue to surge across the Intermountain West, the Great Basin and the Desert Southwest on Monday. This moisture will initiate widespread showers and thunderstorms across the region. Flash flooding will be possible over northeast New Mexico and southeast Colorado. The West Coast will stay mostly clear of precipitation due to a ridge of high pressure over the eastern Pacific.


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