uk es it fr pt nl
Harbor Entrance at Eureka ratings
Quality on a good day: 2.0
Consistency of Surf: 3.0
Difficulty Level: 4.0
Crowds: 3.0

Overall: 3.2

See all 18 ratings

Based on 1 vote. Vote


Surf Report Feed

Harbor Entrance at Eureka Swell Statistics, October: Surf with Light or Offshore Winds

This image shows only the swells directed at Harbor Entrance at Eureka that coincided with light winds or offshore conditions through a typical October. It is based on 2976 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 show increasing swell sizes and largest swells greater than >3m (>10ft) are shown in red. In each graph, the area of any colour is proportional to how frequently that size swell was forecast.

The diagram suggests that the most common swell direction, shown by the longest spokes, was WNW, whereas the the most common wind blows from the NW. 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 29% of the time, equivalent to 9 days. Open water swells exceeding >3m (>10ft) only occur 4% of the time in a typical October, equivalent to just one day but 15% of the time we expect swell in the range 2-3m (6.5-10ft) 15%, equivalent to (5 days). Taking into account the fraction of these swells that coincided with forecast offshore winds, and given the fact that Harbor Entrance at Eureka is exposed to open water swells, we estimate that clean surf can be found at Harbor Entrance at Eureka about 29% of the time and that surf is blown out by onshore wind 64% of the time. This is means that we expect 29 days with waves in a typical October, of which 9 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.