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Notation de Spot de Surf

Noter Juan Tornillo


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Statistiques de Houle pour Juan Tornillo, Décembre: Vagues avec Vents Légers ou Favorables.

This image shows only the swells directed at Juan Tornillo that coincided with light winds or offshore conditions over a normal December and is based upon 2953 predictions, one every 3 hours. The direction of the spokes show where quality surf generating swell comes from. Five colours represent increasing wave sizes. Very small swells of less than 0.5m (1.5 feet) high are shown in blue. Green and yellow represent increasing swell sizes and red represents largest swells greater than >3m (>10ft). In each graph, the area of any colour is proportional to how frequently that size swell happens.

The diagram suggests that the most common swell direction, shown by the largest spokes, was SW, whereas the the most common wind blows from the SSW. The chart at the bottom shows the same thing but without direction information. For example, swells larger than 1.5 feet (0.5m) coincided with good wind conditions 41% of the time, equivalent to 12 days. Open sea swells exceeding >3m (>10ft) are unlikely to arise in a normal December. Taking into account the ratio of these swells that coincided with forecast offshore winds, and given the fact that Juan Tornillo is exposed to open water swells, we calculate that clean surf can be found at Juan Tornillo about 41% of the time and that surf is messed up by onshore wind 55% of the time. This is means that we expect 29 days with waves in a typical December, of which 12 days should be clean enough to surf.

IMPORTANT: Beta version feature! Swell heights are open water values from NWW3. There is no attempt to model near-shore effects. Coastal wave heights will generally be less, especially if the break does not have unobstructed exposure to the open ocean.

FEATURE UPDATE: we now show red swell icons for 'open sea' swells that are travelling in an unfavourable direction for the surf break. In places, these swells may still wrap around coastlines and produce smaller waves at some breaks. They are also significant for windsurfers and other water users that tend to venture further off-shore.