The National Weather Service upgraded the El Reno, Oklahoma tornado that hit late last week, killing 18 people, to an EF-5 tornado — the highest, most dangerous, rarest classification.

As for clean-up, weather has delayed that progress. The tornado sirens sounded in El Reno again Tuesday, May 28. El Reno said they are waiting on help from the state and the feds.

The tornado that struck El Reno, Okla., on Friday night is believed to be the widest on record in the United States at 2.6 miles across, the National Weather Service reported on Tuesday.

The El Reno storm was the widest recorded tornado, 2.6 miles, in United States history. The EF5 twister was on the ground more than 16 miles before lifting.

The National Weather Service has upgraded the El Reno tornado from EF-3 to EF-5, the highest rating on the Enhanced Fujita Tornado Damage Scale, and named it the widest tornado ever measured. An ...

The tornado that struck El Reno, Okla., Friday "is officially the widest known tornado in the U.S.," says the National Weather Service office in Norman, Okla., announcing today that at its widest ...

Hino Trucks has donated a cabover truck to Canadian Valley Technology Center, a vo-tech located outside of Oklahoma City. As a result of the May 31, 2013, El Reno tornado, CV ...

EL RENO - "My love, we're going to die." Maria Pol Martin, 26, spoke those words to her husband Friday, seconds before the EF5 tornado pulled her and their newborn son from the family's minivan ...

State College, PA - According to the National Weather Service in Norman, Okla., the tornado, which struck the area near El Reno, Okla., was the widest on record at 2.6 miles.

NORMAN, Okla. — The National Weather Service says the deadly tornado that struck near Oklahoma City late last week was another top-of-the-scale EF5 that packed winds reaching 295 mph. The ...