Major heat returns for the weekend

  Much of southern sections of Manitoba can expect a return to heat as a southerly flow develops behind an area of high pressure in eastern Canada. The southerly flow will also result from a few low pressure systems approaching the province. This heat will probably end up being one of the last few heatwaves of the summer. Find out how long it will last and how hot it will get, below. 

Saturday: Will end up being one of the days that kicks off the start to a hot weekend, sunny skies aided by a southerly flow and southerly wind will allow temperatures to soar into the low to mid 30C range for a majority of the south. I’m expecting day time highs anywhere between 31C and 37C, with the majority of the heat impacting areas of the parklands and southwestern Manitoba. Winnipeg: Sunny, high 34C. Brandon: Sunny, high 35C. Dauphin: Sunny high 36C. 

Saturday Night: A trough of low pressure will sit over the central regions of Manitoba with little in the way of precipitation expected, south of this trough very warm air will sit over the region overnight. Temperatures will only drop into the high teens to low 20s , (15 to 21C) with some areas only dropping to 23C. These lows are more common in July than August. Winnipeg: Clear, low 20C. Brandon: Clear, low 20C. Dauphin: Clear, low 24C. 

Sunday: Will end up being one of the hottest days of the weekend, Sunday will end up being sunny and extremely hot. Despite a trough of low pressure sitting over the area, there will be too much capping to allow for thunderstorm development even with 1,500 to 2,000 J/Kg of CAPE. There will be a risk for thunderstorms in the interlakes and parts of the red river valley, however that will be a low chance.  Temperatures will soar into the mid to high 30’s and low 40’s with only low to mid 20’s around all of the Manitoba lakes. The best chance for 40C temperatures appear to be in the dauphin and parkland areas. There is a chance a few areas or 2 in southern sections may see 40C. Winnipeg: Sunny, risk of a thunderstorm in the late afternoon high 39C. Brandon: Sunny, risk of a thunderstorm in the late afternoon high 39C. Dauphin: Sunny, risk of a thunderstorm late in the afternoon high 40C. NEW: Victoria Beach for comparison, high 30C. 

Sunday Night: Not much of a cool down is expected overnight into Monday, clear skies are likely overnight into Monday with temperatures only reaching the mid to high teens in the parklands; southwestern Manitoba. Areas in the southeastern sections of Manitoba and the interlakes as well as the red river valley only dropping into the low to mid 20’s. Winnipeg: Clear, low 25C. Brandon: Clear, low 18C. Dauphin: Clear low 18C. 

The week ahead: There are some indications that the heat will stick around for the first half of the week, with a return to mid to high 30s and low 40C temperatures possible in some parts of Manitoba, overnight lows are expected to drop into the low to mid 20C range. There will also be a risk for thunderstorms as well on Tuesday and Wednesday.