Under the original F scale, an F5 rating was given as follows ... EF5 tornado to hit the U.S. was the infamous 2013 Moore, Oklahoma, tornado. This violent tornado was on the ground for more ...

Damage from the 1999 F5 tornado that struck Moore, Oklahoma. Photo courtesy NOAA. Dr. T. Theodore Fujita developed the Fujita Tornado Damage Scale (F-Scale) to provide estimates of tornado ...

WOODWARD, Okla. — On April 9, 1947, one of Oklahoma's most devastating tornadoes hit Woodward. The powerful F5 tornado level 200 city blocks and killed more than 100 people in the city ...

Here's the story about the strongest wind speed measured on the Earth's surface, and how it took 14 years for this ...

just south of the Texas-Oklahoma border. This tornado, estimated to be an F5, killed 73 people along its path. Glazier-Higgins: April 9, 1947 — Also rated an F5, this tornado tore through two ...