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A storm system that stalled over Minneapolis dumped more than 2 inches of rain within an hour Tuesday, causing widespread street ­flooding.

The deluge triggered flash flood warnings in parts of Hennepin and Ramsey counties, including Minneapolis, St. Paul, Edina, St. Louis Park, Roseville, Golden ­Valley, Hopkins, Falcon Heights and the Minnesota State Fairgrounds.

In parts of Minneapolis, water rose above wheel wells of parked cars and submerged city streets, making them impassable to traffic. Significant flooding was reported in Uptown along Bde Maka Ska/Lake Calhoun and on Interstate 394, where waves lapped up against concrete road barriers.

The National Weather Service told motorists to avoid driving through flooded streets and reminded commuters of the adage: “Turn around, don’t drown.”

A thunderstorm Monday left roughly 55,000 people without power, mainly in the eastern cities, according to Xcel Energy. Power had been restored to most by Tuesday evening.

Also on Tuesday, the National Weather Service verified that a small tornado touched down southeast of Belle Plaine on Monday, demolishing several small structures, including some at a pig farm. No injuries were reported.