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Weather Underground Forecast for Sunday, August 30, 2015

A weak cold front will move over the Midwest on Sunday, while the remnants of Tropical Storm Erika affect the Southeast.

A weak frontal boundary will shift eastward over the Midwest and the middle Mississippi Valley. As this cold front transitions eastward, it will generate showers and thunderstorms across the Midwest, the Tennessee Valley and the interior Mid-Atlantic. High pressure will keep conditions relatively quiet across New England.

Meanwhile, the remnant low associated with Tropical Storm Erika will skim across the southern tip of Florida. This system will bring gusty winds and heavy rain to the region on Sunday. Heavy rain could lead to flash flooding over the southern tier of Florida. Rain and thunderstorms will also develop over the southern Mid-Atlantic and the Southeast.

Meanwhile, a Pacific cold front will slide eastward over the Intermountain West and the Great Basin. This system will bring light to moderate rain to the upper Intermountain West. During the late afternoon and evening, showers and thunderstorms will develop over the northern high Plains. An onshore flow from the Pacific Ocean will also bring wet weather to the Pacific Northwest.

Additionally, monsoonal thunderstorms will fire up over the central and southern Rockies. Western Arizona and southern California will stay mostly clear of precipitation. Temperatures will jump into the triple digits across the Desert Southwest.

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