| Tornado |
| A tornado is a violently destructrive windstorm. This is the Fujita Scale. The Fujita (or F) Scale, created by T. Theodore Fujita, is used to classify tornadoes. The Fujita Scale uses rating numbers from 0 to 5, based on the amount and type of wind damage. |
| Rank F-0 F-1 F-2 F-3 F-4 F-5 |
| Wind Speed 40 - 72 miles per hour 73 - 112 miles per hour 113 - 157 miles per hour 158 - 206 miles per hour 207 - 260 miles per hour More than 260 miles per hour |
| Damage Light Moderate Considerable Severe Devastating Incredible |
| Strength Weak Weak Strong Strong Violent Violent |
| Most tornado deaths per year: 519 (In 1953). Least tornado deaths per year: 15 (In 1986). Average number of tornadoes per year, U.S. (1950 - 1998): 816 |
Meteorology ---------------- |