A time traveler has predicted that the second-largest tornado in recorded history will ... the damage beyond the "incredible ...

But what are EF5 tornadoes, and are they different from their F5 counterparts? Here are all the available details regarding the nomenclature of the chaotic natural phenomena. Simply put ...

The Fujita scale is used to determine how powerful a tornado is. The highest on the scale - an F5 - is used to categorise tornadoes travelling at up to 318mph (511km/h). These tornadoes can cause ...