Friday, July 22, 2016

Another sultry summer day for Montreal and Ottawa Valley

The heatwave in the central portion of the United States continues to periodically spill into Ontario and Quebec.
Heat warnings and special weather statements remain in effect from Environment Canada for southern Ontario and Quebec today. The combination of very warm temperatures, along with the high humidity, is creating rather steamy weather from Montreal to Ottawa and Toronto. Temperatures on Thursday reached the low to middle 30's across many location of eastern Canada including 31C (88F), here in Montreal, and 34C (94F) in Toronto. A few showers and thunderstorms overnight in Quebec only added to the elevated humidity. The temperature dropped no lower than 22C (72F) early Friday morning in Montreal, and we are already up to 27C (80F) as of 9:30 here on L'Ile Perrot.

Giant baseball size hailstones fell in central Saskatchewan this past week. A tornado was also reported near Davidson, Saskatchewan on Tuesday, July 19. (CBC Saskatchewan)
What you see is pretty much what you get, as southern Quebec will remain on the northern edge of a ring of fire in the central US. A massive dome of hot high pressure remains centered over the Midwest, with a rather strong and prolonged heatwave underway there. Temperatures in those regions have been in the 90's to 100F (34 to 37C). Along the edge of this system are periodic ripples of low pressure and frontal boundaries giving a break from the heat, but also showers and thunderstorms. Some of the storms have been very strong, with large hail and even tornadoes reported in Saskatchewan and Manitoba this week. Some thunderstorm activity is possible in Montreal later today and Saturday. Sunday is expected to be fair at this time, and a touch cooler. We can expect more heat and humidity next week with daytime highs very close to 30C (86F) each day for Montreal and southern Quebec.

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