Blizzard Risk for Southern Ontario on Friday; When Will It Arrive?

Southern Ontario is currently on track to see a high-impact snowstorm starting Friday evening. This storm will bring a brief, but intense burst of snow leading to blizzard conditions in many areas.

Here's a region-based breakdown of the estimated timing. Please note that these are estimates, and actual start times may vary by a few hours. However, this should give you a general idea of when to expect the worst conditions.


FULL FORECAST


The blizzard is expected to begin in Deep Southwestern Ontario in the late afternoon or early evening. Areas like Windsor, Chatham, and Sarnia will likely see conditions worsen between 5-7 PM.

Once the blizzard conditions arrive, they will last for one or two hours before gradually reducing in intensity with moderate snow continuing into Saturday. Although the wind will remain a concern throughout the night so expect some blowing snow.


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As the heavy snow band moves northeast, it will reach the London, Kitchener, and Goderich area shortly after dinner. The GTA, Hamilton, and Niagara regions should brace for the blizzard around 8-9 PM. Note that some of these areas might have mixed precipitation, which could reduce the severity of the blizzard.

Later in the evening, Central Ontario, including Simcoe County, Kawartha, Peterborough, and Muskoka, will experience heavy snow and strong winds. This is expected to start between 9-10 PM in the south and around 11 PM in the northern areas.


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Eastern Ontario, including Kingston and the Ottawa Valley, will likely see the blizzard start around 10 PM and around midnight, respectively.

Since it's not feasible to include every location in our graphic, we recommend using the closest listed location for guidance.