Friday, July 19, 2013

Another hot day Montreal - then big thunderstorms

A Transport Quebec camera captures the slow traffic in thunderstorms in Montreal this morning. It has been a bad traffic week.
The heatwave is into its 6th day here in Montreal with another 31C day on Thursday and 32C forecast today. High heat and humidex advisories are in place across Ontario and into Quebec and now the Champlain Valley of New York. Temperatures today will rise rapidly on strong southwest winds to 32 to 35C (90-95F) region wide with humidex/real feel temperatures over 40C (102F). This will be the last day of this kind of heat for some time, some say until next year! We will have to see about that, in any event a warm front this morning is generating thunderstorms across metro Montreal. As per usual they are staying away from L'Ile Perrot, but they are affecting a large portion of the highway system on the Island of Montreal, slowing down the morning commute. Once these clear the city we are in for a warm and humid day with gusty winds up to 60km/h and hot temperatures.

A strong cold front, the beginning of the end of the heatwave, will begin to produce big thunderstorms this afternoon across eastern Ontario. These will settle into southern Quebec by 5 or 6pm and linger most of the evening. Heavy rain and strong winds are likely. A severe thunderstorm watch is in effect all day until midnight, but most of the strong storms will occur after 4pm for Montreal.

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