What is a primary concern for vessels in autumn on Lake Ontario?

The primary concern for vessels in autumn on Lake Ontario is high winds. During this season, weather patterns can shift significantly, leading to increased storm activity. Autumn is known for producing more powerful frontal systems that can cause gusty winds, which can create challenging and hazardous boating conditions. These high winds can produce larger waves and rough waters, impacting the stability and safety of vessels.

While fog, ice, and rain are all potential hazards in their own right, they are not as consistently associated with autumn activities on the lake as high winds. Fog might occur but is generally a concern in spring and summer; ice becomes a significant issue primarily in winter; and while rain can be common, it does not typically pose as serious a threat to vessels as strong winds do during autumn storms. Understanding these seasonal changes is crucial for safe navigation.