At 3:12 p.m. MDT, Environment Canada meteorologists are tracking a dangerous thunderstorm capable of producing damaging wind gusts, golf ball to tennis ball size hail and heavy rain.
This severe thunderstorm is located 15 km southwest of Irma and is moving northeast at 20 km/h.
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Driving conditions will likely be difficult. Large hail will likely cause significant damage and injury.
Severe thunderstorms can produce tornadoes.