The Fujita Scale
This is the Fujita Scale. It measures the miles per hour and the damage it causes.
| Fujita Classification |
Wind speed (mph) |
Damage |
| F - 0 |
42 - 72 |
Light |
| F - 1 |
73 - 112 |
Moderate |
| F - 2 |
113 - 157 |
Considerable |
| F - 3 |
158 - 206 |
Severe |
| F - 4 |
207 - 260 |
Devastating |
| F - 5 |
261 - 318 |
Incredible |
There is a F-6, which is 319 mph.-Mach 1, but has never been scientificly proven to be possible.
Facts about different types of Tornadoes :
| Tornado type |
Fujita Ranking |
% of Tornadoes |
Lifetime |
% of Tornado Deaths |
| Weak |
F0-F1 |
69% |
1 - 10+ Minutes |
Less than 5% |
| Strong |
F2-F3 |
29% |
20+ Minutes |
30% |
| Violent |
F4-F5 |
2% |
1+ Hours |
70% |
