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Notation de Spot de Surf

Noter JD Reef


Surf Report Feed

Statistiques de Houle pour JD Reef, Juin: Vagues avec Vents Légers ou Favorables.

This image shows only the swells directed at JD Reef that coincided with light winds or offshore conditions through a typical June. It is based on 2786 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 show increasing swell sizes and red shows biggest swells greater than >3m (>10ft). In either graph, the area of any colour is proportional to how frequently that size swell occurs.

The diagram suggests that the dominant swell direction, shown by the largest spokes, was SSE, whereas the the prevailing wind blows from the WSW. 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 49% of the time, equivalent to 15 days. Open water swells exceeding >3m (>10ft) only happen 4% of the time in a typical June, equivalent to just one day but 18% of the time we expect swell in the range 2-3m (6.5-10ft) 18%, equivalent to (5 days). Taking into account the fraction of these swells that coincided with predicted offshore winds we calculate that clean surf can be found at JD Reef about 49% of the time and that surf is spoilt by onshore wind 29% of the time. This is means that we expect 23 days with waves in a typical June, of which 15 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.