Page 4 - Ef 5s News Today : Breaking News, Live Updates & Top Stories | Vimarsana

the whole building started to shake. our ears started to pop. >> incredible stories of survival. >> we thought we were going to be sucked up the chimney. >> now joplin, missouri, holds its breath and wonders is it over yet? >> it was crazy. i never seen nothing like that a day in my life. >> why now? what's really going on? >> that is destroyed. completely. >> twisters, volcanoes, earthquakes, tsunamis. where will mother nature strike next? eyewitness accounts from storm chasers and reports from the ground. >> debris on the ground here. >> this is a special edition of "piers morgan t...

Was. give me historical perspective on a storm that strong? >> no problem, t.j. when we refer to the ef scale, that is basically a scale based upon damage for tornadoes, and it's called the enhanced fujita scale, ef 0 to ef-5, most tornadoes fall in the range of ef 0 to ef-3 which can cause damage but they're usually very weak, don't last long, only a few seconds they dissipate. rarely will you have the stronger tornadoes, the ef-4 or 5s and those are incomprehensible damage, especially the ef-5s, it's difficult for the atmosphere to provide the kind of energy needed it create these powerful t...

Rolled through this area. lives forever are going to be changed from this. >> we're going to share video with our viewers here. let's roll some of this video. i want to ask you about it as we look at it. one of the things we hear about ef-5, we know that's the strongest out there. how rare are these types of storms that are this strong and also, we hear that this one was on the ground for so long and just cut a straight path. how odd is that as well? >> okay. i'll give you some numbers. these are going to be harsh. since 2007, we've had two, two ef-5s and that's not just here in the united sta...

Again, breaking news. new figures from the mayor of tuscaloosa, alabama. 39 killed this that city, chillingly, more than 400 people still unaccounted for. that may be duplications in their system that they haven't confirmed yet, but let's certainly hope that's the case. it speaks not only to how many tornadoes hit the south, but how powerful some were. f-5s, the worst of the worst, that kind that wipe out entire small towns. right now a team of weather experts are on the ground there in many of those places trying to determine what hit them. rob marciano joins us now. he's joins us from tuscal...

Forecast. first up, can i get historical perspective from you. the series of devastating storms, look at what it has done and what preceded that and what might we expect the rest of this horrific season. >> that's the big question. we're at the very beginning typically of our severe weather season. most tornadoes are not the big huge strong ones like we saw in this outbreak. about 99.6% are called ef-3 or ef-2 or lower and many of them are ef-0s or 1s. it is the ef-3s and ef-5s, once it gets over 166 miles per hour, so maybe four out a thousand, that's it. those are the ones we dealt with. we ...