in the state of oklahoma. some of them probably going to be on the high end, stronger than ef-3, and several tracks that we did have, large damage -- very damaging tornadoes, is they're very large. i filmed a mile-wide tornado coming across i-40 west of oklahoma city about 30 miles, and luckily that stayed just west of oklahoma city and stayed out of the heart of the city, which is very, very fortunate today. >> well, jeff, i mean, stay safe down there. i know you're doing a very dangerous job, a very valuable job, you get great research information from this storm chasing. we'll come back to you throughout the hour if and when you have any news for us. i'm going to go now to sam champion, who's been monitoring what's happening in joplin. there's a new warning of a potential second tornado that may well hit joplin. sam, what's the latest? >> reporter: good evening, piers. the tension in joplin is just incredible, because we are all watching this line of storms develop from dallas-ft. worth, all the way through oklahoma city. tulsa's involved in this as well, as you guys were just report, well up into witchta,