Transcript for Dangerous storms push east over holiday weekend

And now to a large section of the country hit by damaging winds. A storm with lightning over Springfield, Missouri. Rob Marciano on the dangerous storms now pushing east. Reporter: Extreme storms marching across the heartland this holiday weekend. Torrential rain and wind gusts over 70 miles per hour. Punishing parts of Missouri, dumping hail the size of soft baths. I've never seen hail this big. Reporter: Downed power lines, trees torn in half, powerful winds flipping this trailer over, crushing two cars. We looked outside and it was just like a hurricane. Reporter: In Branson, two dead and one missing after flash flooding swept away their car. I've got a car in the water with people trapped. Reporter: And in Joplin, this giant shelf cloud, a sign of powerful winds moving in. A storm lighting up the night sky in Tulsa, Oklahoma. And torrential rains on southern Illinois. Trees uprooted in Memphis, Tennessee, winds knocking out power to nearly 200,000. And super cells dominating the landscape in Colorado. And rob, thankfully the indy 500 is now over. Reporter: It is, but an hour and a half after the race ended, the skies opened up. It's still raining, a lot of thunder and lightning. Fans still remaining asked to evacuate. These storms slowly pushing off to the east. A number of severe thunderstorm watches. Flood watches across west Virginia, Ohio with rough weather, parts of Texas. This all moves to the east. A messy Monday for New York, diminishing in the afternoon. And severe thunderstorms extended into the southeast. Rob, thanks. And there's still much more

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