Below-freezing temperatures, snow squalls appear in southern Ontario
With the coldest temperatures of the month so far for parts of southern Ontario arriving on Tuesday, conditions will be worsened by the fact there will be a burst of snow with them.
The lake-effect snow machine, which kicked up Monday night, will continue through Tuesday, giving the snowbelts a shot of 5-10 cm of snow or higher in some spots, while the Greater Toronto Area (GTA) could see a burst of 2-4 cm of accumulation.
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Weather advisories and snow squall warnings are in place for many regions in southern Ontario. Be prepared to adjust to rapidly changing conditions on the roads through Tuesday.
Tuesday: Lake-effect snow continues with much cooler December air
On Tuesday, wraparound flurries and lake-effect snow squalls continue, but will lighten across southern Ontario.
Colder air is wrapping behind Monday’s system, transitioning rain into snowfall. Now, this combined with lake enhancement, could produce 2-4 cm of snow for regions across the GTA by Tuesday morning.
The snowbelts will see locally more than 10 cm of snowfall with squalls developing off of Lake Huron and Georgian Bay through Tuesday morning. However, there is pretty good agreement on lake enhancement for the Niagara Peninsula –– locally 15 cm possible there.
Clearer conditions are in sight by the afternoon.
"Slow down driving in slippery conditions. Watch for taillights ahead and maintain a safe following distance. If visibility is reduced while driving, turn on your lights and maintain a safe following distance," Environment and Climate Change Canada (ECCC) says in the weather advisory.
Tuesday will also feature the coldest air of December in Toronto. Behind the system, a lobe of cold air will track down south. Temperatures will continue to hover below the freezing mark on Tuesday.
This will actually be the first time this month that we will have a temperature reading below 0°C.
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As we head towards Christmas, temperatures will be fluctuating around or above freezing, which will likely mean a green Christmas this year.
Stay with The Weather Network for the latest on conditions across Ontario.
