| Here are some interesting tornado facts about | | | | by the Texas Tech. University Wind Science and |
| the way tornadoes are measured and rated. The | | | | Engineering Research Center in conjunction with |
| standard scale that is used to measure the size | | | | other wind engineers and meteorologists. By |
| of a tornado is called the Fujita Scale or F Scale | | | | incorporating improved knowledge of wind speeds |
| as it is more commonly referred to. The F Scale | | | | and the resulting damage they were able to |
| was devised in 1951 by the Japanese American | | | | determine a more accurate assessment of a |
| meteorologist Tetsuya Fujita. | | | | tornado based on its destruction path. The scale |
| This scale classifies tornadoes on a hierarchy | | | | retained the original categories of the Fujita Scale |
| based on the amount of damaged that they | | | | but the associated wind speeds were revised. |
| caused. By measuring the amount of damage, a | | | | Below is the enhanced F Scale or EF Scale rating |
| wind speed can be determined and used to rate | | | | measurements that were adopted by the National |
| the tornado on the Fujita Scale. Certain types of | | | | Weather Service in 2007. |
| damage happen at different wind speeds. After a | | | | EF0- Estimated winds of 65-85 mph. |
| tornado has passed through an area experts will | | | | EF1- Estimated winds of 86-110 mph. |
| assess the type of damage that was done to | | | | EF2- Estimated winds of 111-135 mph. |
| structures and trees. By studying the types of | | | | EF3- Estimated winds of 136-165 mph. |
| damage they can determine the category or size | | | | EF4- Estimated winds of 166-200 mph. |
| of the tornado. | | | | EF5- Estimated winds over 200 mph. |
| In 2007 the Enhanced Fujita scale was developed | | | | |