Environment Canada says its meteorologists are tracking a line of severe thunderstorms capable of producing very strong wind gusts, nickel size hail and heavy rain in Ottawa.
At 2:46 p.m., Thursday, it explained that a long line of thunderstorms, extending from north of Peterborough to Renfrew, was moving east at 50 km/hr.
Severe thunderstorm warnings are issued when imminent or occurring thunderstorms are likely to produce or are producing one or more of the following: large hail, damaging winds, torrential rainfall.
Meanwhile, temperatures near 30 C, with humidex values in the upper thirties continue.
Environment Canada said a slightly cooler and less humid air mass is expected to arrive in the wake of a cold front Thursday evening.
Due to the band of thundershowers coming through, RBC Bluesfest is delaying gates opening Thursday by at least one hour. The festival is expected to provide an update before 6 p.m., however, it anticipates shows to go on as scheduled once the weather system has moved through the area.