Squalls with wind gusts up to 35 knots, frequent lightning and hail of 1 to 2 centimetres are expected or occurring in the area.
A line of thunderstorms located 19 nautical miles northeast of Niagara-on-the-Lake to 24 nautical miles south of Port Darlington is moving northeast at 30 knots.
###
Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.