uk es it fr pt nl
Notation de Spot de Surf

Noter Dona Ana


Surf Report Feed

Statistiques de Houle pour Dona Ana, Hiver: Vagues avec Vents Légers ou Favorables.

The rose diagram shows only the swells directed at Dona Ana that coincided with light winds or offshore conditions over a normal northern hemisphere winter and is based upon 7765 predictions, one every 3 hours. The direction of the spokes show where quality surf generating swell comes from. Five colours illustrate increasing wave sizes. Blue shows the smallest swells, less that 0.5m (1.5 feet) high. Green and yellow represent increasing swell sizes and highest swells greater than >3m (>10ft) are shown in red. In each graph, the area of any colour is proportional to how commonly that size swell occurs.

The diagram implies that the most common swell direction, shown by the longest spokes, was SSW, whereas the the dominant wind blows from the WNW. 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 46% of the time, equivalent to 42 days. Open sea swells exceeding >3m (>10ft) are unlikely to happen in a normal northern hemisphere winter but 5% of the time you can expect swell in the range 1.3-2m (4-6.5ft) 5%, equivalent to (5 days). Taking into account the fraction of these swells that coincided with forecast offshore winds, and given the fact that Dona Ana is exposed to open water swells, we estimate that clean surf can be found at Dona Ana about 46% of the time and that surf is blown out by onshore wind 52% of the time. This is means that we expect 89 days with waves in a typical northern hemisphere winter, of which 42 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.