#earthscience #meteorology #physics 

The Safir-Simpson hurricane wind scale classifies [[Hurricane|hurricanes]].

Developed in 1971 by Herbert Saffir and Robert Simpson.

| Category            | Speed                      |
| ------------------- | -------------------------- |
| Tropical depression | <= 38 mph<br><= 17 m/s     |
| Tropical storm      | 39-73 mph<br>18-32 m/s     |
| 1                   | 74-95 mph<br>33-42 m/s     |
| 2                   | 96-110 mph<br>43-49 m/s    |
| 3                   | 111-129 mph<br>50-58 m/s   |
| 4                   | 130-156 mph<br>58 - 70 m/s |
| 5                   | >= 157 mph<br>>= 70 m/s    |
Not to be confused with the [[Fujita scale]]