Statistiques de Vent de Agate and Pearl Street, moyennes sur Hiver depuis 2006
This image shows how frequently and how strongly the wind blows from different directions through a typical northern hemisphere winter. The largest spokes point in the directions the wind most commonly blows from and the shade of blue implies the strength, with the strongest winds shown by the darkest shade of blue. It is based on 6931 NWW3 forecasts of wind since since 2006, at 3hr intervals, for the closest NWW3 model node to Agate and Pearl Street, located 21 km away (13 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 Agate and Pearl Street blows from the W. If the rose diagram shows a close to circular outline, it means there is no strong bias in wind direction at Agate and Pearl Street. 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. Over an average northern hemisphere winter, the model suggests that winds are light enough for the sea to be glassy (pale blue) about 30% of the time (27 days each northern hemisphere winter) and blows offshore 46% of the time (39 days in an average northern hemisphere winter). During a typical northern hemisphere winter wind stronger than >40kph (25mph) was expected for only a single days at Agate and Pearl Street
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.