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Weather Underground Forecast for Friday, July 31, 2015
A cold front will linger over the southern tier of the country on Friday, while a warming trend will continue for the Northwest.
A cold frontal boundary will shift across the western Atlantic. The tail end of this frontal boundary will stall over the Southeast, the Gulf Coast and the southern Plains. Warm, muggy air from the Gulf of Mexico will interact with this frontal boundary, initiating rain and thunderstorms across the southern Mid-Atlantic, the Southeast and the Gulf Coast. Conditions will stay relatively calm across the Tennessee Valley and the interior Mid-Atlantic.
Monsoonal moisture will continue to pool northeastward over the southern Plains and the Southwest on Friday, aiding in the development of widespread showers and thunderstorms. The most organized storms are forecast to impact the southern high Plains and the southern Rockies. There will be threats of flash flooding in northern Texas, western Oklahoma and northern New Mexico. In addition, flash flooding will be possible along sloped terrain across the Desert Southwest. A ridge of high pressure will remain parked over the northeast Pacific. Temperatures will spike 10 to 15 degrees above normal across the Pacific Northwest.
Additionally, a weak cold front will stretch from the northern high Plains to the upper Midwest. As this frontal boundary dips south southeastward, it will generate rain and thunderstorms from Upstate New York to the central Plains.