A derecho that pushed across the Plains and Midwest Monday into Tuesday unleashed heavy rain and huge hail and sent lightning across a wide swath of the United States.
Some hailstones measured up to 4 inches in diameter, or about the size of a grapefruit. The video below shows baseball-sized hail, which damaged cars and homes in Harlan, Indiana, on Monday.
In Chicago, flooding rains and severe thunderstorms cut power to tens of thousands, closed roads and have halted air traffic at O'Hare International Airport. Lightning was seen flashing across the sky and hitting skyscrapers across the Windy City.
There were eight tornadoes reported from Texas to Ohio. Wind reports nearly reached 300, and large hail reports fell just shy of 50.
More than 6 inches of rain was reported by NWS-trained spotter in Parnell, Iowa, in a 24-hour time span. This brought the monthly rain total to 14.45 inches.