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| 0 | 0 - 0.2 | < 1 | Windstil |
| 1 | 0.3 - 1.5 | 1 - 5 | Zwakke wind |
| 2 | 1.6 - 3.3 | 6 - 11 | Zwakke wind |
| 3 | 3.4 - 5.4 | 12 - 19 | Matige wind |
| 4 | 5.5 - 7.9 | 20 - 28 | Matige wind |
| 5 | 8.0 - 10.7 | 29 - 38 | Vrij krachtige wind |
| 6 | 10.8 - 13.8 | 39 - 49 | Krachtige wind |
| 7 | 13.9 - 17.1 | 50 - 61 | Harde wind |
| 8 | 17.2 - 20.7 | 62 - 74 | Stormachtig |
| 9 | 20.8 - 24.4 | 75 - 88 | Storm |
| 10 | 24.5 - 28.4 | 89 - 102 | Zware storm |
| 11 | 28.5 - 32.6 | 103 - 117 | Zeer zware storm |
| 12 | > 32.6 | > 117 | Orkaan |
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