Summer has arrived in full force across southeast Saskatchewan, with temperatures this week soaring into the low 30s and humidex values making it feel even hotter. Residents are being reminded to take precautions through the short but intense stretch of heat.
“Basically, we just have a really strong ridge of high pressure that’s brought in a lot of warm air associated with it,” explained Crawford Luke, a meteorologist with Environment and Climate Change Canada. “At the same time, we've got a bit of humidity coming up from the Dakotas, and all the canola fields are transpiring.”
According to Luke, this combination is pushing daytime highs near or just above 30° with humidex values reaching into the mid-30s. Environment Canada’s threshold for a heat warning in this region is two consecutive days at or above 32° with overnight lows of 16° or higher.
“Right now, we're forecasting 31, 32, 31 for Wednesday, Thursday, Friday, respectively,” Luke said. “We're right on the edge. Further west, in southwest Saskatchewan, we have a warning out already just where temperatures are a bit higher than that even, so I would say there’s a chance we could see a heat warning come out if the forecasters feel there’s a chance we could hit 32 today or on Friday.”
Wednesday and Thursday nights will remain warm with lows of 18° and 17°, offering little overnight relief.
With hot days and warm nights, Luke stressed the importance of hydration, breaks from the sun, and access to cooler environments.
“If you’re working outdoors, make sure you’re taking breaks in the shade or in an air-conditioned space if you have access to one; making sure you’re staying hydrated with plenty of fluids, and not overdoing it.”
Adding to the heat is the potential for late-day thunderstorms, particularly overnight Wednesday and into Thursday. The latest Environment Canada forecast discussion outlines the development of a low in Alberta, triggering a line of storms to move across the province Wednesday night. While the most intense storms are expected to form further west, there is a chance they could reach southeast Saskatchewan after midnight.
These storms could bring gusty winds and hail, but aren’t expected to significantly cool conditions. Relief is expected by the weekend, with a cold front Friday night bringing cooler temperatures and some rain.
“I'm sure we’re going to see more 30-degree days this summer,” Luke added. “So, just a good idea to take a break, just take it easy, listen to your body, stay hydrated, seek out air conditioning if you’re able to.”