Explanation of wind icons
The Beaufort scale
| Nombre | Symbol | m/s | Km/h | Knot | Characteristics | |
|---|---|---|---|---|---|---|
| 0 | Calm |  |
< 0.3 | < 1 | < 1 | Calm. Smoke rises vertically. |
| 1 | Light air |  |
0.3 – 1.5 | 1 – 5 | 1 – 2 | Wind motion visible in smoke |
| 2 | Light breeze |  |
1.5 – 3.3 | 6 – 11 | 3 – 6 | Wind felt on exposed skin. Leaves rustle. |
| 3 | Gentle breeze |  |
3.3 – 5.5 | 12 – 19 | 7 – 10 | Leaves and smaller twigs in constant motion. |
| 4 | Moderate breeze |  |
5.5 – 8.0 | 20 – 28 | 11 – 15 | Dust and loose paper raised. Small branches begin to move. |
| 5 | Fresh breeze |  |
8.0 – 11 | 29 – 38 | 16 – 20 | Branches of a moderate size move. Small trees begin to sway. |
| 6 | Strong breeze |  |
11 – 14 | 39 – 49 | 21 – 26 | Large branches in motion. Whistling heard in overhead wires. Umbrella use becomes difficult. Empty plastic garbage cans tip over. |
| 7 | Viento fuerte |  |
14 – 17 | 50 – 61 | 27 – 33 | Whole trees in motion. Effort needed to walk against the wind. Swaying of skyscrapers may be felt, especially by people on upper floors. |
| 8 | Gale, Fresh gale |  |
17 – 20 | 62 – 74 | 34 – 40 | Some twigs broken from trees. Cars veer on road. Progress on foot is seriously impeded. |
| 9 | Strong gale |  |
21 – 24 | 75 – 88 | 41 – 47 | Some branches break off trees, and some small trees blow over. Construction/temporary signs and barricades blow over. Damage to circus tents and canopies. |
| 10 | Storm, Whole gale |  |
25 – 28 | 89 – 102 | 48 – 55 | Trees are broken off or uprooted, saplings bent and deformed. Poorly attached asphalt shingles and shingles in poor condition peel off roofs. |
| 11 | Violent storm |  |
29 – 32 | 103 – 117 | 56 – 63 | Widespread vegetation damage. Many roofing surfaces are damaged; asphalt tiles that have curled up and/or fractured due to age may break away completely. |
| 12 | Hurricane |  |
≥ 33 | ≥ 118 | ≥ 64 | Very widespread damage to vegetation. Some windows may break; mobile homes and poorly constructed sheds and barns are damaged. Debris may be hurled about. |
Calcula el efecto de enfriamiento. Si te has quedado expuesto al viento durante un día frío, te habrás dado cuenta de cuanto eso te hace percibir una temperatura externa inferior a la real. Causa de ello es la capacidad del viento de de transportar la sutil capa de aire cálida que rodea nuestro cuerpo entre la piel y la ropa. La chaqueta rompeviento reacciona en el sentido contrario, buscando de intrapolar en el interior el aire calentado por el cuerpo. En el caso de viento muy fuerte solo las chaquetas rompevientos de buena calidad llegan a minimizar la dispersión térmica. En general sería, si el viento es fuerte el cuerpo pierde calor mucho más rapidamente, y la temperatura por eso percibida es inferior.
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