GEOLOGY

Detailed explanation-1: -It is a scale used to assess the severity and the damage caused by Tornado. It was devised by T. Theodore Fujita in the late 1960s. The scale measures the severity on the basis of the wind velocity and the damage done by the tornado.

Detailed explanation-2: -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-3: -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.

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. Let TMs take for example, the three little pigs: A tornado comes along and huffs and puffs at the houses of straw, sticks and bricks.

Detailed explanation-5: -Differences from the Fujita scale The old scale lists an F5 tornado as wind speeds of 261–318 mph (420–512 km/h), while the new scale lists an EF5 as a tornado with winds above 200 mph (322 km/h), found to be sufficient to cause the damage previously ascribed to the F5 range of wind speeds.