Why Toronto’s second heat wave of July isn’t that unusual

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Source Toronto was on its way to setting a heat record on Tuesday with maximum temperatures expected to hit 37 C and feel more like 45 C with the humidex, although there was nothing unusual about the city’s second heat wave so far in July. The first heat wave, which saw Environment Canada issue an orange warning, was from June 30 to July 4. The most recent heat event, which saw the lesser yellow warning issued, started Monday. It was supposed to end by Wednesday or Thursday night with Tuesday being the hottest day. “We certainly have done it before,” The Weather Network meteorologist Doug Gillham said. “The previous heat event, I mean, the humidex peaked at 48 C at Pearson; now that is unusual, but to have two heat events in July is not unusual. It is true that both events have pushed the upper limits of typical Toronto heat. So 48 C humidex is brutal, but the record is 50.3 C (set...