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Notation de Spot de Surf

Noter Discovery Bay


Surf Report Feed

Statistiques de Houle pour Discovery Bay, Septembre: Vagues avec Vents Légers ou Favorables.

This image shows only the swells directed at Discovery Bay that coincided with light winds or offshore conditions through a typical September. It is based on 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 the biggest swells, greater than >3m (>10ft). In either graph, the area of any colour is proportional to how frequently that size swell was forecast.

The diagram suggests that the prevailing swell direction, shown by the longest spokes, was E (which was the same as the prevailing wind direction). 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 11% of the time, equivalent to 3 days. Open sea swells exceeding >3m (>10ft) are unlikely to occur in a normal September. Taking into account the ratio of these swells that coincided with predicted offshore winds, and given the fact that Discovery Bay is exposed to open water swells, we think that that clean surf can be found at Discovery Bay about 11% of the time and that surf is spoilt by onshore wind 17% of the time. This is means that we expect 8 days with waves in a typical September, of which 3 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.