Extreme Weather Kicks Off July 4th Weekend

Damaging storms and tornadoes strike the middle of the country.
2:09 | 07/03/15

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Transcript for Extreme Weather Kicks Off July 4th Weekend
Now to the severe storms across parts of America. With a record number of people traveling on the July 4th weekend, more than 40 million on the move, five confirmed tornados in 24 hours, including this twister whipping debris through the air in Missouri. Then fierce lightning strikes lighting up the sky in the west. 20 million at risk of extreme weather to kick off the holiday. ABC's senior meteorologist rob Marciano tracking it all. Reporter: The middle of the country hit hard by damaging storms. If that ain't a tornado, I don't know what is. Reporter: That it is, a tornado confirmed in Kentucky. Look at that. Reporter: And three confirmed in Missouri in the last 24 hours. Yeah, that's getting ready to touch down. Reporter: Terrifying moments just outside Kansas City. Dude, check that out. It just took the whole building in front of us, Yo! Reporter: On the other side of the state it was heavy rain. A woman dying in Jefferson county when her car was swept off the road in floodwaters. These residents near St. Louis had to be rescued from their homes as the water rose. And during heavy rain near Nashville, Tennessee, this out-of-control car crushed by a tanker truck. The driver and his two children miraculously survived. And look at his light show in central California. Hundreds of lightning strikes around Fresno but not a lot of rain. Still so dry there that officials in bass lake are replacing fireworks with lasers this fourth of July weekend. And rob joins us now. It's been so hot out west. What they need is rain. Yeah, and they're not going to get widespread rain. Where the rain is going to come is where they already had it in the past couple days. This stalled out. Right now strong storms are heading across South Carolina and eastern Georgia. Big wind, dangerous lightning. Be aware. Across parts of northern Oklahoma, storms beginning to fire up there. The next 24 hours we will see rain across the mountain west. The heaviest rain across the mid south, through the Tennessee valley. Could be some severe weather in there, too. Stick around for the big holiday. Might be a way to develop and get some rain as far north as New York or new England. The heat continues for the fourth of July out west. No relief in sight there, Amy. Stay cool. We'll try to do that.

This transcript has been automatically generated and may not be 100% accurate.

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