The Weather Network – Arctic air sweeps lake-effect snow as far as Manitoba, northwestern Ontario

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Saturday, October 30, 2021, 7:10 p.m. – Manitobans and those in Northwestern Ontario should prepare for a cold and snowy Halloween, with lake-effect groups in place throughout the day, which could spoil plans for some.

After parts of Alberta see a decent snow blast to end the week, it will be Manitoba’s turn to cover themselves in white in the second half of the weekend. While most of the Prairies will be fairly calm during the first week of November, thanks to a stationary ridge centered on Alberta, it will be a different story for southern Manitoba and northwestern Ontario due to the configuration. Halloween will be gruesome for some, with chilly temperatures and lakefront snow. Some areas will be at the mercy of 5-10cm of snow, as it will also remain until Monday. More information on the timeline and impacts, below.

Visit our Complete Fall 2021 Guide for a detailed look at the fall forecast, tips for getting ready for it, and more!

SUNDAY / MONDAY: SNOW, FRESH AND EARLY NOVEMBER HALLOWEEN

The ridge over Alberta will combine with a broad elevation trough over eastern Canada to channel arctic air into Manitoba and northern Ontario. Temperatures of -10 ° C to -15 ° C at about two kilometers above sea level will draw a great deal of moisture from the relatively warm waters of central Manitoba and northern Ontario.

SEE ALSO: A Nice Or Scary Halloween Prediction? This is what Sunday will offer

HalloweenWest

As a result, lakefront snow will move across southern Manitoba and northwestern Ontario on Sunday morning.

North-northwest winds will bring lake-like gusts to the Winnipeg area and impact intermittently on the Trans-Canada Highway from Portage La Prairie, Manitoba to the Ontario border, as well as on Highways 11 and 17 in Ontario from Lake of the Woods. at Lake Superior.

MBSnow

Most areas will only see one or two cm, but the southeastern shores of Lakes Winnipeg, Manitoba, Seul, Nipigon and Lake of the Woods could see 5-10 cm locally. Snow bands will persist until Monday.

As for the weather, Halloween and Monday will be rather brisk, with far-reaching single-digit highs on both days as the cold air mass remains hovering over the province.

LOOK AHEAD: STAY COLD UNTIL MID-WEEK

Temperatures will remain fairly cool in Manitoba until the middle of next week. Widespread high temperatures in the lower digits are expected, falling well below freezing overnight.

The pool of cold air is going to shit over the Great Lakes by Tuesday.

MBTempMon

However, warmer weather will reach Manitoba and northwestern Ontario by the weekend, and the second week of November will feature above-season temperatures in both provinces.

Be sure to check out the latest weather updates for Manitoba and Northwestern Ontario.


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