The largest tornadoes require immense thunderstorms called supercells in order to form. ... A radar image of the supercell that produced a mile-wide F5 tornado near Oklahoma City on May 3, ...

How Twisters Horrifingly Uses One Of The Biggest Tornado ... Hunt's Jo memorably use a leather belt to secure themselves to a pipe that runs underground while in the middle of an F5 tornado.

Sixty-eight years ago, on this date in 1957, North Dakota’s most famous and deadliest tornado tore through the state’s most ...

Through this, tornado severity is ranked from F1 to F5 (the "F" stands for Fujita), with F5 being the worst on the scale. ... These are the 3 biggest tornadoes to ever hit Massachusetts.

These are the 3 biggest tornadoes to ever hit Massachusetts. ... Through this, tornado severity is ranked from F1 to F5 (the "F" stands for Fujita), with F5 being the worst on the scale.

21 tornadoes crossed the Keystone State, including the first and only F5. This WTAE archive video shows some of the widespread damage in Pennsylvania.