The first major thunderstorm of the season swept through the Twin Cities and southern Minnesota Tuesday night, flooding streets, snapping power lines and trees, and sending residents into their basements as tornado sirens wailed.
Hail as large as pingpong balls also pelted the region.
"Now we're officially in summer," said Brent Hewett, a meteorologist at the National Weather Service's Chanhassen office.
After a historically cold and wet spring in Minnesota, Tuesday's storm added more rainfall to already overflowing rivers and lakes.
Cities such as Lakeville were hit hard because of how quickly the rain fell, dropping an inch to 1 ½ inches of rain in about an hour.
Within less than two hours, police in the southern Twin Cities suburb were scrambling to respond to storm-related calls: Flooded roads, nearly a dozen cars submerged or stranded in water, and three house fires likely caused by lightning.
"It was chaotic. We were getting calls left and right," police Sgt. Sandy Thoeny said.
She said some drivers explained that they got stuck because it was raining so hard they couldn't see how deep the water was on the roadways.