Cars are stranded along a flooded stretch of Interstate 696 at the Warren, Mich., city limits, Aug. 12, 2014.

An abandoned vehicle is submerged in flood water on Beach Drive in Kensington, Md., Aug. 12, 2014.

A partially submerged car sits on a flooded section of Interstate 695 in Baltimore,, Aug. 12, 2014, after heavy rains fell across the Mid-Atlantic region. Officials shut down the Baltimore beltway in both directions at Quarantine Road due to heavy flooding.

Cars are stranded along a flooded stretch of Interstate 75 in Hazel Park, Mich., Aug. 12, 2014.

Heavy rains have caused flooding across the East Coast, seen here on Long Island, Aug. 13, 2014.

Heavy rains have caused flooding across the East Coast, seen here on Long Island, Aug. 13, 2014.

A stranded motorist sits atop his car as he awaits rescue from the flooded Southfield Freeway, Aug. 11, 2014, in Dearborn, Mich.

Detroit flooding.

Detroit flooding.

Detroit flooding.

Detroit flooding.

Detroit flooding.

In this Aug. 11, 2014, photo, Joe Snyder, of Warren, Mich., walks through the flooded streets of Detroit. Fearing more motorists could become stranded a day after a storm dumped more than 6 inches of rain in some places in and around Detroit, the state warned commuters against driving in affected areas Tuesday morning.

Detroit flooding.

Detroit flooding.

Detroit flooding.

Detroit flooding.

Detroit flooding.

Cars are stranded along a flooded stretch of Interstate 696 at the Warren, Mich., city limits Aug. 12, 2014. Police divers are searching for anyone trapped in their vehicles. Warren Mayor James Fouts said roughly 1,000 vehicles had been abandoned in floodwaters in the suburb where many roads were closed after 5.2 inches of rain fell Monday.