The EF-scale is an offspring of the original F-Scale developed by Dr. Theodore Fujita 35 years ago. Its development is in accordance with Fujita's vision for future refinements in tornado rating. The current EF “Damage Indicators” and their associated “Degree of Damage” descriptions will be discussed.
When completely implemented, the Enhanced Fujita Scale will provide National Weather Service partners with a tornado damage rating system. The final goal is to have an automated rating assistance package to help decrease EF-rating variations between different evaluators.
The advantages of using the EF-Scale and the lower wind estimates assigned the EF categories will be explored.