The TORRO tornado intensity scale was developed by Terence Meaden at the Tornado and Storm Research Organisation (TORRO) in the United Kingdom. It can be used to describe the intensity of a tornado.
TORRO Scale |
Description |
Wind Speed in mph |
0 |
light |
39 to 54 |
1 |
mild |
55 to 72 |
2 |
moderate |
73 to 92 |
3 |
strong |
93 to 114 |
4 |
severe |
115 to 136 |
5 |
intense |
137 to 160 |
6 |
moderately devastating |
161 to 186 |
7 |
strongly devastating |
187 to 212 |
8 |
severely devastating |
213 to 240 |
9 |
intensely devastating |
241 to 269 |
10 |
super |
270 to 299 |
11 |
|
>= 300 |
corresponding Beaufort scale =
= 2 * (T + 4)
Specialty: Emergency Medicine, Critical Care