Conditions are favourable for the development of squalls with wind gusts up to 40 knots, frequent lightning, hail and poor to very poor visibility in thunderstorms heavy at times.
Thunderstorms over Georgian Bay early this morning will track southeastwards towards the region.
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Poor to very poor visibility may contribute to voyage delays and make marine navigation hazardous. Large hail can damage vessels and cause injury.
Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.