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Weather Underground Forecast for Friday, October 09, 2015

An area of low pressure will streak across the Northeast on Friday, while an onshore flow affects the Northwest.

A low pressure system will move quickly eastward over the eastern Great Lakes and the Northeast. This system will usher moderate to heavy rain and embedded thunderstorms over the upper Midwest, the northern Mid-Atlantic and New England. A cold frontal boundary associated with this system will extend southwestward over the Ohio Valley, the middle Mississippi Valley and the southern Plains. As this frontal boundary transitions east southeastward, showers and thunderstorms will fire up over the southern Plains, the central Plains, the middle Mississippi Valley, the lower Mississippi Valley, the Tennessee Valley, the Ohio Valley, the Mid-Atlantic and the Southeast. Due to the immense rainfall that South Carolina experienced over the past week, thunderstorms could trigger flash flooding over the state. High pressure will settle in northwest of the cold front, which will bring a cool weather pattern to the Midwest and the Northeast.

Meanwhile, a low pressure system will retrograde west southwestward over northern Mexico. Showers and thunderstorms will trail this system over parts of the Southwest and the southern Rockies.

Additionally, moisture associated with the remnants of Hurricane Oho will spread across the Northwest. Moderate to heavy rain will affect the Pacific Northwest and the northern Rockies on Friday.


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