Dirk Hartog Island Wind Stats

The rose diagram shows how commonly 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 implies the strength, with dark blue showing the strongest winds. It is based on 2880 NWW3 forecasts of wind since since 2007, at 3hr intervals, for the closest NWW3 model node to Dirk Hartog Island, located 28 km away (17 miles). There are not enough 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 Dirk Hartog Island blows from the SW. If the rose graph shows a fairly circular pattern, it means there is no strong bias in wind direction at Dirk Hartog Island. By contrast, dominant spokes show favoured directions, and the more deep 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 4% of the time (1 days each April) and blows offshore just 18% of the time (5 days in an average April). Over an average April winds stronger than >40kph (25mph) are expected on 3 days at Dirk Hartog Island

read more