Green Ball Wind Stats
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Wind Stats
The rose diagram describes how often and how strongly the wind blows from different directions over a normal April. The longest spokes point in the directions the wind most commonly blows from and the shade of blue indicates the strength, with the strongest winds shown by deep blue. It is based on 3158 NWW3 forecasts of wind since since 2007, at 3hr intervals, for the closest NWW3 model node to Green Ball, located 25 km away (16 miles). There are not enough 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 prevailing wind at Green Ball blows from the SSW. If the rose graph shows a fairly circular pattern, it means there is no strong bias in wind direction at Green Ball. Converseley, dominant spokes illustrate favoured directions, and the more dark blue, the stronger the wind. Spokes point in the direction the wind blows from. During a typical April, the model suggests that winds are light enough for the sea to be glassy (light blue) about 26% of the time (8 days each April) and blows offshore 29% of the time (9 days in an average April). Over an average April winds exceeding >40kph (25mph) are not expected, but 1 have winds on the range 30-40 (19-25) at Green Ball