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Jap Rock Notations
Qualité quand ça marche: 2.0
Niveau de Difficulté: 1.0
Foule a l'Eau: 4.0

Général: 3.0

Voir toutes les 18 notations

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Surf Report Feed

Statistiques de Houle pour Jap Rock, Avril: Vagues avec Vents Légers ou Favorables.

This image shows only the swells directed at Jap Rock that coincided with light winds or offshore conditions over a normal April and is based upon 2880 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 biggest swells greater than >3m (>10ft). In either graph, the area of any colour is proportional to how often that size swell was forecast.

The diagram indicates that the most common swell direction, shown by the longest spokes, was ENE, whereas the the prevailing wind blows from the ESE. 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 7% of the time, equivalent to 2 days. Open sea swells exceeding >3m (>10ft) are unlikely to occur in a normal April. Taking into account the ratio of these swells that coincided with expected offshore winds we estimate that clean surf can be found at Jap Rock about 7% of the time and that surf is messed up by onshore wind 59% of the time. This is means that we expect 20 days with waves in a typical April, of which 2 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.