Squalls with wind gusts up to 35 knots and hail of 1 to 2 centimetres are expected or occurring in the area.
As of 7:37 p.m. EDT, a thunderstorm near Desbarats is moving southeastward at 10 knots.
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Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.