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Detroit to Nashville Sunday Storm Threat

Heavy and gusty thunderstorms are expected to ignite across the lower Great Lakes to the Tennessee Valley on Sunday as a powerful storm continues to march eastward.

Cities that will be affected include Detroit, Mich., Cleveland, Ohio, Cincinnati, Ohio, and Nashville, Tenn.

As these thunderstorms roll through, winds may be gusty at times and drenching rainfall may lead to localized flooding. Some gusty winds could bring down small trees and branches. Power outages may occur as a result.

This is the same storm system that spun up a tornado outbreak across the central U.S. on Friday. Damage in Wayne, Neb., suggested that an EF-4 tornado had touched down. Most of the damage however was rated EF-2 and EF-3, according to the National Weather Service in Omaha.

The storm also brought a blizzard to portions of Wyoming and South Dakota, dumping 48 inches of snow in Deadwood, S.D., while winds gusted between 60 and 70 mph in nearby locations.

Another round of strong storms re-kindled on Saturday bringing a few more tornado reports and gusty winds from Wisconsin to Tennessee.

Although this storm has a severe history, much of the thunderstorms on Sunday won't reach severe criteria. The main threats will be gusty winds and drenching downpours that could lead to localized flooding.

The risk for storms will last through much of the day before tapering off to just rain on Sunday night into Monday morning. Rain overnight will still be heavy and could lead to additional flooding.

Soaking rainfall will benefit some areas that had below-average September rainfall including Detroit and Cleveland.

Detroit collected only 37 percent of their normal rainfall for September, while Cleveland measured 51 percent.

Football games are likely to be impacted as the thunderstorms rumble through on Sunday afternoon.

Folks heading to Cincinnati at 1 p.m. to see the Bengals take on the Patriots may want to bring a poncho. It will also be a wet game in Nashville as the Titans take on the Chiefs at 1 p.m.

The heavy storm focus will shift to the Northeast on Monday as the storm advances farther east. Moisture from Karen will combine with the front bringing soaking rainfall to the Northeast.

Improving conditions will gradually settle in after the large storm departs midweek.

Story written by AccuWeather.com Meteorologist Jordan Root.