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- DictionaryBeaufort scale/ˈbəʊfət skeɪl/
noun
- 1. a scale of wind speed based on a visual estimation of the wind's effects, ranging from force 0 (less than 1 knot or 1 km/h, ‘calm’) to force 12 (64 knots or 118 km/h and above, ‘hurricane’).
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