Beaufort scale
Empirical measure describing wind speed based on observed conditions / From Wikipedia, the free encyclopedia
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"Violent storm" redirects here. For the video game, see Violent Storm.
The Beaufort scale /ˈboʊfərt/ is an empirical measure that relates wind speed to observed conditions at sea or on land. Its full name is the Beaufort wind force scale.
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/b/b5/Beaufort_scale_12_notext.jpg/320px-Beaufort_scale_12_notext.jpg)