The documentary The Twister: Caught in the Storm is constantly using the Enhanced Fujita scale when talking about the tornadoes featured in the film, so here is how the EF scale works and how many ...

Once they estimate the wind speed that could’ve caused the damage, using ground reports and Doppler radar data, they can then establish an Enhanced Fujita scale rating for that tornado.

THAT IS, A FULLY FORMED TORNADO. NOW, IN MEASURING TORNADO STRENGTH, WE USE THE ENHANCED FUJITA SCALE, OR THE EF SCALE THAT’S BEEN UPDATED. MAYBE SOME FOLKS MY AGE ARE A LITTLE OLDER.