twisters ripped across oklahoma and texas today in. the coming days the threat pushes east, possibly well into florida. further north tonight, a major storm is unleashing blinding snow from the rockies across the northern plainsy the great lakes region as it bar also towards the midwest and northeast. since monday the storms have caused more than 10,000 flight to be delayed or canceled. we have a team of correspondents in the storm songs and our partedders in at the weather channel standing by with the forecast. elise preston will heed off coverage in shreveport, los angeles. reporter: good evening, the tornado watch in northwest louisiana will remain in effect for the next few hours, but there is great concern that tornadoes will likely strike overnight while people are sleeping. oh, my gosh. reporter: storms tore across the south today. a tornado. reporter: spawning at least