Thus, experts now don't know whether the 1925 Tri-State tornado -- which killed about 695 people when it tore through Missouri, Illinois and Indiana -- was actually a single funnel or many, which is why it isn't officially considered the deadliest single tornado.
Officials hadn't confirmed that a tornado actually touched down in Dallas but said the storm was capable of producing one.
Like a surprising number of people in Oklahoma, Shelley didn't have an underground tornado shelter, so he jumped in his car and took off.
Rick Smith, the warning coordination meteorologist for the National Weather Service at Norman, said that while the storm packed a powerful punch, it wasn't as strong as the Moore tornado.
WSJ: Tornado-Hit Oklahoma Struck Again; Mother and Baby Dead
Huddled inside the hospital, Barnhart says she didn't realize how much damage the tornado had caused until she walked outside and saw the bowling alley across the street -- or saw where the bowling alley used to be.
El Reno Mayor Matt White didn't provide details about those killed after the tornado struck, but he stressed the importance of staying indoors when powerful storms hit.
They don't know for sure, but apparently a mini tornado passed over the rover blowing all the dust away.
Even the force of a hurricane, which at least has a long wind up and warning time, can't match the explosive and random fury of a tornado's touchdown and destruction.
Ninety miles east, in Creston, Iowa, storm damage prompted local officials to evacuate the local medical center, although officials said they weren't sure if damage had been caused by a tornado or just high winds.
"About that time, she said, 'Look behind us' -- and a third tornado formed behind us, but hadn't touched down, " Cook said.
It's much easier to willfully launch a tornado on the trailer park when you don't have to answer to anyone.
All were done in case his crew would have to pull away from a tornado and use well-maintained roads that wouldn't turn into "pancake batter" in rain.
At least, she said, Irene can't topple as many trees as it once could, thanks to the tornado.
Meteorologists had warned about particularly nasty weather Friday but said the storm's fury didn't match that of a top-of-the-scale EF5 tornado that struck suburban Moore, where a tornado killed 24 on May 20.
WSJ: Tornado-Hit Oklahoma Struck Again; Mother and Baby Dead
Louis and across the Mississippi River, the city of Roxana was hit by an EF3 tornado, but National Weather Service meteorologist Jayson Gosselin said it wasn't clear whether the damage in both states came from the same EF3 twister or separate ones.
The Plaza Towers school, which was built in 1966, wasn't required by law to have an underground shelter, the best protection against such a powerful tornado, officials said.
WSJ: Oklahoma Tornado: Long Minutes of Desperation Inside School Razed by Storm
Louis and across the Mississippi, the city of Roxana was hit by an EF3 tornado as well, but National Weather Service meteorologist Jayson Gosselin said it wasn't clear whether the damage in both states came from the same EF3 twister or separate ones.
Oklahoma state law also doesn't require schools to have fortified aboveground rooms, which can be built with reinforced concrete to withstand tornado winds, said Kevin Kloesel, director of the Oklahoma Climatological Survey, which offers statewide training in emergency management.
WSJ: Oklahoma Tornado: Long Minutes of Desperation Inside School Razed by Storm
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