What can NE winds on Lake Ontario sometimes create in the entrance to Rochester Harbor?

Northeast winds on Lake Ontario can generate significant wave action, particularly at the entrance to Rochester Harbor. When these winds blow across the lake, they can push water toward the shore, creating a phenomenon known as "wave setup." This process can lead to the accumulation of energy in the water, resulting in larger waves.

Waves can reach impressive heights depending on various factors, such as the speed and duration of the wind, as well as the fetch—the distance over water that the wind blows without obstruction. In this scenario, the waves can indeed swell to heights of around 12 feet in extreme conditions. The geography of Rochester Harbor, combined with the northeast wind direction, allows for the potential for such sizable waves, particularly during storm events or prolonged wind conditions.

Understanding this information is crucial for boating safety and navigation around Rochester Harbor, as large waves can pose significant hazards for vessels and shoreline structures. Adjustments to operations may be necessary when conditions suggest the likelihood of such high waves.