Black Rocks Wind Stats

This picture describes how commonly and how strongly the wind blows from different directions over a normal September. The biggest spokes point in the directions the wind most commonly blows from and the shade of blue implies the strength, with the strongest winds shown by dark blue. It is based on 3360 NWW3 forecasts of wind since since 2006, at 3hr intervals, for the closest NWW3 model node to Black Rocks, located 43 km away (27 miles). There are too few recording stations world wide to use actual wind data. Without question some coastal places have very localized wind effects that would not be predicted by NWW3. According to the model, the prevailing wind at Black Rocks blows from the SSW. If the rose graph shows a fairly circular pattern, it means there is no strong bias in wind direction at Black Rocks. On the other hand, dominant spokes illustrate favoured directions, and the more the darkest shade of blue, the stronger the wind. Spokes point in the direction the wind blows from. During a typical September, the model suggests that winds are light enough for the sea to be glassy (pale blue) about 4% of the time (1 days each September) and blows offshore just 8% of the time (2 days in an average September). Over an average September wind stronger than >40kph (25mph) was expected for only a single days at Black Rocks

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