Nearly three decades ago, a monstrous F5 tornado tore through multiple Birmingham suburbs, wiping out dozens of structures, ...

EF4 tornadoes are even more destructive. Most well-built permanent structures can be reduced to merely their foundations, while large vehicles can be picked up and ... scale, F5, EF5, and IF5 ...

Of the 10 tornadoes that touched down during this event, five were extremely intense and long-lived F4 and F5 tornadoes. Of the five violent tornadoes that day, three had an F5 rating, meaning ...

which rated tornadoes from F0 to F5, based on estimated wind speeds and observed damage. Then, in 2007, the weather service adopted the Enhanced Fujita scale, which better reflected actual storm ...

which rated tornadoes from F0 to F5, based on estimated wind speeds and observed damage. Then, in 2007, the weather service adopted the Enhanced Fujita scale, which better reflected actual storm ...

Thirty-eight significant tornadoes touched down with 18 of them considered violent (F4-F5) wiping out neighborhoods, and killing hundreds and injuring thousands in Midwestern states. Four ...

A powerful, wide-reaching spring storm is threatening parts of the central and eastern US, with a life-threatening outbreak of long-lived and strong tornadoes possible in some areas. Follow here for ...