Statistiques de Vent de Anna Bay-Morna Point, moyennes sur Hiver depuis 2006
The rose diagram shows how frequently and how strongly the wind blows from different directions over a normal southern hemisphere winter. The longest spokes point in the directions the wind most commonly blows from and the shade of blue implies the strength, with the darkest shade of blue strongest. It is based on 7266 NWW3 forecasts of wind since since 2006, at 3hr intervals, for the closest NWW3 model node to Anna Bay-Morna Point, located 25 km away (16 miles). There are insufficient 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 Anna Bay-Morna Point blows from the ESE. If the rose graph shows a fairly circular pattern, it means there is no strong bias in wind direction at Anna Bay-Morna Point. Converseley, dominant spokes show 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 southern hemisphere winter, the model suggests that winds are light enough for the sea to be glassy (the lightest shade of blue) about 6% of the time (5 days each southern hemisphere winter) and blows offshore 19% of the time (9 days in an average southern hemisphere winter). Over an average southern hemisphere winter winds stronger than >40kph (25mph) are expected on 5 days at Anna Bay-Morna Point
IMPORTANT: Beta version feature! Swell heights are open water values from NWW3. There is no attempt to model near-shore effects. Coastal wave heights will generally be less, especially if the break does not have unobstructed exposure to the open ocean.