Riversdale Wind Stats

The rose diagram shows how often and how strongly the wind blows from different directions over a normal May. The longest spokes point in the directions the wind most commonly blows from and the shade of blue suggests the strength, with the strongest winds shown by dark blue. It is based on 3422 NWW3 forecasts of wind since since 2007, at 3hr intervals, for the closest NWW3 model node to Riversdale, located 38 km away (24 miles). There are not enough recording stations world wide to use actual wind data. Invevitably some coastal places have very localized wind effects that would not be predicted by NWW3. According to the model, the most common wind at Riversdale blows from the SE. If the rose graph shows a fairly circular pattern, it means there is no strong bias in wind direction at Riversdale. By contrast, 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 May, the model suggests that winds are light enough for the sea to be glassy (pale blue) about 5% of the time (2 days each May) and blows offshore 29% of the time (9 days in an average May). Over an average May winds stronger than >40kph (25mph) are expected on 2 days at Riversdale

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