Monday, June 30, 2014

Weather Underground National Forecast for Monday, June 30, 2014

By: nationalsummary , 10:11PM,GMT on June 29,2014

Weather Underground Forecast for Monday, June 30,2014

A cold front will extend from the Great Basin to the upper Midwest on Monday, while an area of low pressure will linger over the southern Mid-Atlantic.

A strong low pressure system will inch across the northern tier of the country on Monday, focusing over the upper Mississippi Valley and the western Great Lakes. A cold frontal boundary associated with this system will extend across the Great Basin, the central Rockies, the central Plains and the upper Midwest. As warm, humid air collides with this frontal boundary, strong to severe thunderstorms will develop across the nation’s midsection. Severe thunderstorms will be possible across northern Texas, southeast Colorado, northern Oklahoma, Kansas, Arkansas, Iowa, Illinois, southern Wisconsin, northwest Indiana and southwest Michigan. These thunderstorms will be capable of producing large hail, dangerous straight line winds and isolated tornadoes. In addition, heavy rain associated with these thunderstorms could lead to flash flooding across the upper Mississippi Valley. Scattered showers and thunderstorms will also be possible over the northern Plains.

Meanwhile, an area of low pressure will inch southward along the coasts of Georgia and Florida on Monday. This system will bring very stormy weather to the southeast, and will have a high, 60% chance to develop into a tropical cyclone. Disorganized showers and thunderstorms will also be possible across the Ohio Valley and parts of the Northeast.

Out west, a ridge of high pressure over the eastern Pacific will keep conditions mostly clear across the West Coast. Temperatures will approach 110 degrees across the Desert Southwest on Monday.

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