The nation's longest "drought" between EF5 tornadoes has come to an end, scientists from the National Weather Service ...

The most rare and extreme form of tornado struck eastern North Dakota in June, but experts just determined how strong it really was.

May in the central and Southern Plains is a notoriously volatile month for severe thunderstorms and tornadoes, as recent history has illustrated. On May 20, 2013, 12 years ago today, a supercell ...

WASHINGTON — An EF5 tornado struck North Dakota this year, the National Weather Service confirmed Monday, marking the first tornado of that strength in more than a decade on American soil. The ...

Dave Malkoff is a national correspondent with the CBS Innovation Lab, where his work appears across all CBS News and Station platforms. Twelve years ago, the last EF5 tornado to hit the United States ...

Directly in the tornado's path, Moore Medical Center patients, staff unharmed. May 21, 2013 — -- Hospital emergency department manager Nick Stremble didn't need the television to tell him the ...

The nation's longest "drought" for the most extreme type of tornado has come to an end, scientists from the National Weather Service announced. The tornado that ended the 12-year gap actually hit back ...