Some communities across Ontario have seen more than 100 cm of snow from this powerful, lake-effect snow event, and the squalls will continue for some areas as we begin the new work week.
The hardest-hit communities will catch a break as the snow squalls will move as winds shift across the region.
We’re still looking at the potential for 50-75 cm of additional snow accumulations for spots through Tuesday––and that’s before our next opportunity for widespread snow arrives by the middle of the week.
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Prepare for more challenging driving conditions. Keep an eye on the radar and keep up-to-date with the latest highway conditions before you head out.
Winds shift into Monday
Chilly air pouring over the Great Lakes for the past few days has given rise to multiple, potent snow squalls throughout the region. Echo Bay, Ont., reported 136 cm of snow as of 3 p.m. on Sunday.
Winds shifting around out of the northwest will allow the Lake Huron squall to become the dominant feature of the region. This snow squall will meander over this area through Tuesday morning, bringing hefty snowfall totals to parts of the region.
Snow squall warnings continue to be in effect. Heavy snowfall rates of 5-10 cm an hour are possible. Remain alert for potential traffic jams, road closures, and impassable roads.
Lake Huron Squall: Drivers should watch for dangerous winter weather conditions along highways 7, 26 and 401. There’s a high potential for road closures on the 401 corridor between London and Woodstock.
Georgian Bay Squall: Drivers should watch for dangerous winter weather conditions along highways 26, 89 and 400.
Once these squalls wrap up on Tuesday, our attention will turn to a mid-week snow threat across southern Ontario. Forecasters are watching a pulse of Pacific moisture that’ll spend a few days traversing the country.
A clipper will tap into this moisture as it moves into the Great Lakes region by Wednesday, drawing in some additional moisture from the lakes to bring the first widespread snow of the season to the Greater Toronto Area. Be sure to check back for updates on this developing system.
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Stay tuned to The Weather Network for the latest forecast updates in Ontario.
