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Johnshaven Notations
Qualité quand ça marche: 4.0
Consistance des Vagues: 2.0
Niveau de Difficulté: 3.0
Foule a l'Eau: 4.0

Général: 3.5

Voir toutes les 18 notations

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Surf Report Feed

Statistiques de Houle pour Johnshaven, Automne: Vagues avec Vents Légers ou Favorables.

This image shows only the swells directed at Johnshaven that coincided with light winds or offshore conditions over a normal northern hemisphere autumn. It is based on 8724 predictions, one every 3 hours. The direction of the spokes show where quality surf generating swell comes from. Five colours show increasing wave sizes. The smallest swells, less than 0.5m (1.5 feet), high are coloured blue. Green and yellow represent increasing swell sizes and red illustrates the highest swells, greater than >3m (>10ft). In either graph, the area of any colour is proportional to how frequently that size swell happens.

The diagram suggests that the dominant swell direction, shown by the biggest spokes, was S, whereas the the dominant wind blows from the SW. 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 1.3% of the time, equivalent to 1 days. Open sea swells exceeding >3m (>10ft) are unlikely to arise in a normal northern hemisphere autumn. Taking into account the proportion of these swells that coincided with predicted offshore winds, and given the fact that Johnshaven is slightly protected from open water swells, we think that that clean surf can be found at Johnshaven about 1.3% of the time and that surf is messed up by onshore wind 19% of the time. This is means that we expect 18 days with waves in a typical northern hemisphere autumn, of which 1 days should be surfable.

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.