Transcript for Dangerous storms hammer the south
follow egg an urgent tornado watch as we're on the air tonight and severe weather from New Orleans all the way east tonight. At least 15 reported tornadoes in the last 24 hours. This one in Oklahoma. Its fierce winds destroying this and these storms are in a collision course with good Friday, passover and Easter coming. ABC's Victor Oquendo is in Louisiana tonight. Reporter: Tornado sirens warning families to take cover in Mississippi, as dangerous storms hammer the south. Polkville is under the gun right now. Very dangerous storm moving into that area. Reporter: High winds flipping cars. This is a live shot of the Walmart parking lot in Clinton. Reporter: In Arkansas, interstate 30 inundated. In Houston, trees on cars, storage sheds flattened. A tree tangled in power lines, setting fire to this house with a family asleep inside. I'm just so thankful to god, because my kids were in that room. They sleep where the attic is at. Reporter: Overnight, drivers taking coverer. Baseball-sized hail shattering windshields north of ft. Worth. At least eight reported tornados from Texas to Oklahoma. David, we're on lake pontchartrain just outside new it rained here all afternoon. Now, this area stretching east to Florida's panhandle is under a tornado watch tonight. Winds could top 70 miles per hour. More tornadoes are likely. Victor Oquendo with us live tonight. Victor, thank you. Let's get right to rob Marciano, who has been tracking this system all week for us. Hey, rob. Reporter: Hey, David. Radar is active, so, let's get right to it. The storms, a line of them, moving 40 miles an hour to the east. So, Birmingham, mobile, you're next with this. Could be damaging. Tornado watches remain up. This storm is strengthening, so, more spin, more moisture coming in from the gulf. Look for powerful storms in the morning, getting into the Carolinas, maybe as far north as D.C. By the evening with damaging storms there. Where it's not storming, it will be raining heavily. Flood watches posted for the northeast, including New York City tomorrow night. David? Rob, our thanks to you again tonight.
This transcript has been automatically generated and may not be 100% accurate.