Enhanced Fujita Scale Explanation

The E/F-scale was unveiled by the NWS to the public and the full meteorological community early in 2006. On 1 February 2007, the Enhanced Fujita scale replaced the original Fujita scale in all tornado damage surveys in the United States. It is important to note that, despite the improvements, the E/F-scale still remains a set of wind estimates based on 8 levels of damage to 28 different types of structures and vegetation.

This table compares the estimated winds in the original F-scale and the operational E/F-scale that is currently in use by the NWS.