GEOLOGY

Detailed explanation-1: -The Enhanced Fujita Scale or EF Scale, which became operational on February 1, 2007, is used to assign a tornado a ‘rating’ based on estimated wind speeds and related damage.

Detailed explanation-2: -The EF Scale is the standard way to measure tornadoes based on wind damage. The original Fujita Scale (or F Scale) was developed by Dr. Theodore Fujita. All tornadoes, and other severe local windstorms, were assigned a number according to the most intense damage caused by the storm.

Detailed explanation-3: -Devastating tornado. 207-260 mph. Well-constructed houses leveled; structures with weak foundations blown off some distance; cars thrown and large missiles generated. F5.

Detailed explanation-4: -The F-scale is based on the amount of destruction a tornado causes, whereas the EF-scale relies more on wind-speed to determine a tornado TMs rating.