The Enhanced Fujita scale rates tornadoes from EF0 to EF5 based on damage, with EFU used when damage assessment is impossible. National Weather Service officials received reports and photos that ...

The monster Tri-State Tornado is colloquially believed to have been EF5 on the Enhanced Fujita ... which may have been wrapped in rain or debris, making it hard to see, but photos taken of the ...

This remains South Dakota's only tornado rated either F5 or EF5, the highest rating for tornado ... allows precipitation to fall as snow, even as rain - or in this case, severe thunderstorms ...

MILE WIDE TORNADO STORMCHASERS TRIBUTE chronicles the EF5 tornado that traveled over 17 miles and left mass devastation within its 45 minute reign of terror in ...