Wednesday, December 15, 2021

Cold winter weather, makes a return.

 Much of Southern sections of Manitoba has been experiencing, a unseasonably warm last couple of weeks. A low pressure system will continue moving through our region causing a shift in the temperature pattern, and It’ll likely cause a return to below normal temperatures as arctic high pressure builds in. (Below: A snapshot of what temperatures are expected for the day on Thursday, plummeting well into the minus teens). 

Wednesday Night:A area of low pressure will be off to our south and as it moves east snow will follow on the backside of this low pressure system. 


Unfortunately before that happens there will be a risk of freezing drizzle during the first half of the evening before , snow and blowing snow will take over for the southeastern half of Manitoba regions. The blowing snow will cause very poor visibilities especially in open areas, highway travel isn’t advised. Freezing drizzle accumulations will only end up being a trace. Snowfall should start easing late overnight, early morning. Snowfall should only total 2-4cm, as well there is freezing drizzle advisories  in effect at the moment for the southeastern half of Manitoba read them here.    Heading into the overnight behind this system very cold arctic air will begin filtering into the region, snow and blowing snow coupled with a northwesterly flow will allow temperatures to drop well into the mid minus teens, to high minus teens (-15 to -19C) windchills will drop well into the mid to high minus 20’s (-25 to -30C). 

Thursday: Will end up starting off with snow and blowing snow in the southeast before clearing in the late afternoon hours. It’ll end being one of the coldest days of the week, temperatures will only warm up into the low to mid minus teens (-10 to -15C). Some cloud will filter in during the afternoon. Overall windchills may end up being in the minus 20’s again in the afternoon. Thursday night, will end up being cold again, temperatures will drop well into the mid to high minus teens (-15 to -20C). Windchills anywhere from (-25C to -32C) overnight but will moderate by Friday morning as cloud starts filtering into the area. 

Friday: An approaching low pressure system will move into the region, bringing cloudy skies with snow likely coming in during the early to late afternoon hours with a clipper bringing 5 to 10cm. Blowing snow is also possible. Temperatures will moderate a bit during the day being in the low to mid minus teens vs the mid to high minus teens of earlier week. So I would expect highs to be anywhere from -13C to -16C in the west to -10 to -14C in the southeast with windchills in the high minus teens and low minus 20s. Friday night: The snow and blowing snow will taper off during the early evening hours into the early overnight. Cloudy skies are likely , that’ll help keep temperatures steady in the low to mid minus teens in the southeast (-11 to -16C), areas in the southwest unfortunately will see lows from (-15 to -21C) and corresponding windchills in the low minus 20’s to the low minus 30’s, on the colder side in the southwest.

The weekend: Will end up being much colder , a arctic high will filter in behind the low pressure system and temperatures will only warm into the high minus teens and low minus 20’s. Overnight lows on Saturday will sit over the low to mid minus 20’s with windchill exceeding -30C. Calm weather is expected Sunday with highs in the mid minus teens, even near -10C along the USA/Canada border. Then as we head into the overnight lows will approach the mid to high minus teens. Colder weather is possible on Monday, however that’s a ways out still. 


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