May 20, 2013, marks the last time the United States was hit by the worst type of tornado. On that date, a monster EF5 tornado tore a 17-mile path through the Oklahoma City suburbs, creating "40 ...

One hundred years ago on this date, the Tri-State Tornado was the deadliest twister ever recorded. But was it the longest?

May 20, 2013, marks the last time the United States was hit by the worst type of tornado. On that date, a monster EF5 tornado tore a 17-mile path through the Oklahoma City suburbs, creating "40 ...

MOLINE, Ill. — A new study published by the American Meteorological Society has shed light on a puzzling phenomenon: The United States has not logged an EF5 tornado, the most violent category ...

The other, which had the most severe damage near Diaz in Jackson County, was determined to be a high-end EF4 tornado with maximum winds of 190 mph. For comparison, an EF5 tornado has winds of at ...

Violent tornadoes are ripping through parts of the US, wiping out schools and toppling semitractor-trailers in several states, part of a monster storm that has killed at least 32 people ...