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 three lightning bolts striking Chicago towers at the same time.
Triple lightning strikes captured hitting Sears, Trump and Hancock in Chicago on Monday, June 30, 2014. (YouTube Video/Dan Robinson)
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.
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A major storm with drenching rain, gusty winds and the risk of flooding will accompany temperatures more fitting for March and April in the northeastern United States early next week.
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Damaging winds, torrential downpours, hail and tornadoes are among the weather phenomena expected to threaten the Southeast this weekend.
At least 24 people, with the vast majority children, died on Thursday when a truck crashed into a school bus amid dense fog southeast of New Delhi, India.
Heavy rain moves south to Southern California as the first round of flooding tapers off throughout Thursday.