Jonathan Maco News Today

Right now. Announcer from nbc news World Headquarters in new york this is nbc nightly news. Reporting tonight, kate snow. Good evening. As we come on the air on this memorial day, it is a very dangerous night for at least 30 million americans under the threat of violent weather. Historic relentless rainfall and flash flooding combined with an outbreak of deadly tornadoes has already produced catastrophic damage. Homes destroyed across parts of mississippi, oklahoma and texas where the governor h...