Shag Rock Wind Stats

This picture describes how often and how strongly the wind blows from different directions over a normal July. The longest spokes point in the directions the wind most commonly blows from and the shade of blue suggests the strength, with the darkest shade of blue strongest. It is based on 3472 NWW3 forecasts of wind since since 2006, at 3hr intervals, for the closest NWW3 model node to Shag Rock, located 16 km away (10 miles). There are too few recording stations world wide to use actual wind data. No doubt some coastal places have very localized wind effects that would not be predicted by NWW3. According to the model, the most common wind at Shag Rock blows from the WSW. If the rose diagram shows a close to circular outline, it means there is no strong bias in wind direction at Shag Rock. On the other hand, dominant spokes represent favoured directions, and the more dark blue, the stronger the wind. Spokes point in the direction the wind blows from. During a typical July, the model suggests that winds are light enough for the sea to be glassy (the lightest shade of blue) about 10% of the time (3 days each July) and blows offshore 30% of the time (9 days in an average July). Over an average July winds stronger than >40kph (25mph) are expected on 3 days at Shag Rock

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