NBC Nightly News Full Episode - March 15

Tonight, the punishing storm system bringing blizzard conditions and the threat of tornadoes with millions under alerts. Heavy snow paralyzing parts of the Midwest. Dozens of crashes. Cars like this one spinning out. Blizzard warnings blanketing seven states. And down south, an intense dust storm. You see it there. Plus, possible tornadoes from Michigan to the Gulf Coast with the East bracing for what's headed their way tomorrow. Iran attacking global oil supplies as President Trump calls on allies to help ...