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Backdoor avaliaçãos
Qualidade em um dia bom: 3.5
Consistência do surf: 5.0
Nível de dificuldade: 3.5
Windsurf e kite surf: 5.0
Multidões: 2.5

Overall: 3.9

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Baseado em 2 votes. Vote


Surf Report Feed

Backdoor Swell Statistics, Spring: Surf with Light or Offshore Winds

This image shows only the swells directed at Backdoor that coincided with light winds or offshore conditions over a normal northern hemisphere spring. It is based on 8682 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 illustrate increasing swell sizes and red shows largest swells greater than >3m (>10ft). In both graphs, 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 WNW, whereas the the most common wind blows from the NNW. 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 22% of the time, equivalent to 20 days. Open water swells exceeding >3m (>10ft) only happen 0.7% of the time in a typical northern hemisphere spring, equivalent to just one day but 6% of the time we expect swell in the range 2-3m (6.5-10ft) 6%, equivalent to (5 days). Taking into account the ratio of these swells that coincided with forecast offshore winds, and given the fact that Backdoor is exposed to open water swells, we calculate that clean surf can be found at Backdoor about 22% of the time and that surf is messed up by onshore wind 74% of the time. This is means that we expect 87 days with waves in a typical northern hemisphere spring, of which 20 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.