Who developed the Enhanced Fujita Scale?

The Fujita (F) Scale was originally developed by Dr. Tetsuya Theodore Fujita to estimate tornado wind speeds based on damage left behind by a tornado. An Enhanced Fujita (EF) Scale, developed by a forum of nationally renowned meteorologists and wind engineers, makes improvements to the original F scale.

What are the 5 levels of the Fujita scale?

The Fujita Scale

Why was the Fujita scale enhanced?

The scale has the same basic design as the original Fujita scale—six intensity categories from zero to five, representing increasing degrees of damage. It was revised to reflect better examinations of tornado damage surveys, in order to align wind speeds more closely with associated storm damage.

When was the Enhanced Fujita Scale invented?

The Fujita Scale was first developed in 1971 by Ted Fujita, a meteorologist at the University of Chicago in Illinois. Storm experts began using an enhanced version of the scale in 2007 that included more detailed descriptions of the damage.

What is an EF5?

While the F-scale goes from F0 to F12 in theory, the EF-scale is capped at EF5, which is defined as “winds ≥200 mph (320 km/h)”. In the United States, the Enhanced Fujita scale went into effect on February 2, 2007, for tornado damage assessments and the Fujita scale is no longer used.

When did the Enhanced Fujita Scale replace the original Fujita scale?

February 2007
The Fujita scale was replaced with the Enhanced Fujita scale (EF-Scale) in the United States in February 2007. In April 2013, Canada adopted the EF-Scale over the Fujita scale along with 31 “Specific Damage Indicators” used by Environment Canada (EC) in their ratings.