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Beaufort Scale
Scale devised in 1805 by Francis Beaufort to classify wind speed
| Beaufort Scale |
Wind Description | Windspeed (mph) |
|---|---|---|
| 0 | Calm | 0 |
| 1 | Light Air | 1-3 |
| 2 | Light Breeze | 4-7 |
| 3 | Gentle Breeze | 8-12 |
| 4 | Moderate Breeze | 13-18 |
| 5 | Fresh Breeze | 19-24 |
| 6 | Strong Breeze | 25-31 |
| 7 | Moderate Gale | 32-38 |
| 8 | Fresh Gale | 39-46 |
| 9 | Strong Gale | 47-54 |
| 10 | Whole Gale | 55-63 |
| 11 | Storm | 64-72 |
| 12 | Hurricane | >73 |