PHOTOS: Days of lake-effect snow bring wintry feel to Ontario

·12 min read
PHOTOS: Days of lake-effect snow bring wintry feel to Ontario
PHOTOS: Days of lake-effect snow bring wintry feel to Ontario

Many in southern Ontario may not be ready for the snow just yet, but Mother Nature wasn't going to wait, as the start of the new month has brought a much more wintry feel.

Many woke up to the sights of some flakes flying on Tuesday, which swept through the higher terrain and areas near Lake Huron and Georgian Bay, catching some off guard. For other areas with warmer temperatures, particularly near the lakeshores, precipitation manifested as rain, while some communities reported seeing a decent helping of graupel.

SEE ALSO: Why snow squalls are one of the hardest events to forecast

The lake-effect snow was enough to cause slippery roads in parts of the province Tuesday, with that threat lingering through the day on Wednesday, prompting some of the first winter weather travel advisories of the season.

What's behind the early November snowfall?

A deep trough brought the coldest air of the season to southern Ontario Tuesday. The Great Lakes water temperature continues to be the warmest in more than 25 years for this time of the year as a result of the prolonged warmth through October. This large temperature difference between the water and air two kilometres above it creates a very unstable atmosphere over the water.

Coupled with a northwesterly wind direction over the lakes, lake-effect squalls developed along Lake Huron and Georgian Bay shores. These narrow, stubborn bands of precipitation rely on smaller-scale local factors, which must be considered in regards to who sees rain, snow or bright sunny skies.

ONLAKE
ONLAKE

"Within the squalls, clouds block the sunlight during the day, creating locally colder temperatures underneath. Additionally, further inland, higher-elevation areas in southern Ontario such as Blue Mountain, Collingwood, Dundalk Highlands, and Mono Cliffs Provincial Park, are slightly colder," said Rachel Modestino, a meteorologist at The Weather Network.

"Both situations allow temperatures to teeter around the freezing mark, so rain-snow mix, graupel or even snow flurries dominate."

The lake-effect snow and rain will continue Wednesday as the upper trough remains hovered over the Great Lakes region. Similar to Tuesday, the lake-effect snow squalls and showers will be highly dependent on location, time of day and temperatures.

Below is a selection of visuals of the lake-effect precipitation currently making the rounds on social media.

Thumbnail courtesy of Justin M/Twitter, taken in Brussels, Ont.

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