May 20, 2013, marks the last time the United States was hit by the worst type of tornado. On that date ... right now than it was to attain an F5 rating on the legacy Fujita scale," Lyza said.

Tornado classifications have evolved since the original Fujita (F scale) was developed in 1971. Under the original F scale, an F5 rating was given as follows: “Whole frame houses tossed off ...

The item is a Maple tree with a 2X4 piece of wood driven through it which occurred during the F5 tornado of 1925. This item was cut down and shipped to Springfield to be part of the state archives ...