At 9:28 p.m. MDT, Environment Canada meteorologists are tracking a severe thunderstorm capable of producing heavy rain.
A line of severe thunderstorms is located from Frog Lake to Vermillion and is moving slowly to the northeast.
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Heavy rain may cause flash flooding and significant reductions to visibility.
Severe thunderstorm warnings are issued when imminent or occurring thunderstorms are expected to produce damaging hail, wind or rain.