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Alibaba ratings
Quality on a good day: 2.0
Consistency of Surf: 3.0
Difficulty Level: 3.0
Crowds: 4.0

Overall: 3.2

See all 18 ratings

Based on 2 votes. Vote


Surf Report Feed

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

This image shows only the swells directed at Alibaba that coincided with light winds or offshore conditions through a typical northern hemisphere spring. It is based on 6580 predictions, one every 3 hours. The direction of the spokes show where quality surf generating swell comes from. Five colours represent increasing wave sizes. Very small swells of less than 0.5m (1.5 feet) high are shown in blue. Green and yellow illustrate increasing swell sizes and red shows the largest swells, greater than >3m (>10ft). In either graph, the area of any colour is proportional to how commonly that size swell was forecast.

The diagram implies that the dominant swell direction, shown by the biggest spokes, was NW, whereas the the most common wind blows from the NNE. 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 1.5% of the time, equivalent to 1 days. Open sea swells exceeding >3m (>10ft) are unlikely to occur in a normal northern hemisphere spring. Taking into account the proportion of these swells that coincided with forecast offshore winds, and given the fact that Alibaba is exposed to open water swells, we estimate that clean surf can be found at Alibaba about 1.5% of the time and that surf is messed up by onshore wind 38% of the time. This is means that we expect 35 days with waves in a typical northern hemisphere spring, of which 1 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.