It's been 12 years since the historic, deadly Moore, Oklahoma, EF5 tornado. New research has given light as to why no U.S. tornado has achieved an EF5 rating since.

Oklahoma medical examiner spokeswoman Amy Elliot said this morning that she believes some victims were counted twice in the early chaos of the storm. The original death toll included 20 children.

They were found after an extensive search by Moore police and neighboring agencies. The principal of Apple Creek Elementary in Moore, Oklahoma, said the 12-year-old boy was a student there.

Police in Moore, about 10 miles south of Oklahoma City, received dozens of reports of "high-water incidents" over the weekend, including two cars stranded in floodwaters Saturday evening. One car ...

At least four people died as a result of Easter weekend storms in Oklahoma, which brought tornadoes, hail, heavy rain and flooding. Two of the fatalities occurred as a result of the high waters in ...

On Easter Sunday, communities in Texas and Oklahoma were beginning to assess the damage wreaked by tornadoes. There were 17 reported events Saturday, according to Bob Oravec, lead forecaster with ...

The storm also brought heavy rain to a broad swath of north-central Texas across central-eastern Oklahoma, much of which saw 2 to 4 inches accumulate Saturday into Sunday. Police in Moore, about ...

Search ongoing in Leonard, Oklahoma About 4:45 p.m. Sunday, the Bixby Fire Department received a call regarding a vehicle swept away in high waters, about 4.5 miles east of Leonard, Oklahoma.