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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Toronto Post Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Environment Canada’s latest model shows 15–25 cm of snow for Toronto and 10–20 cm for Ottawa by Friday evening, with peak rates of 3–5 cm per hour. This is a classic Alberta clipper tracking southeast, meaning a fast, intense burst of snow followed by falling temperatures.
What are the exact snowfall totals and timing?
The storm arrives in southern Ontario around 4 a.m. Friday, heaviest between 8 a.m. and 2 p.m. Toronto faces 15–25 cm; the Niagara region and eastern Lake Ontario shore may see 20–30 cm due to lake enhancement. Ottawa’s window runs 10 a.m. to 6 p.m. with 10–20 cm. Winds gusting 50–70 km/h will create near-zero visibility during the peak. The live ranking above shows this event currently rated “High” for disruption risk against other active alerts.
Which areas are under a winter storm warning today?
A winter storm warning is in effect for Toronto, Hamilton, Halton-Peel, York-Durham, and much of eastern Ontario including Ottawa. This is the most widespread weather warning for southern ontario weather warning today. The warning triggers when 15+ cm of snow is expected within 12 hours with reduced visibility. For real-time updates, check ontario weather warnings today and southern ontario weather warning today.
When is the next snow storm in Ontario after this one?
Models suggest another clipper system possible Monday–Tuesday next week, but confidence is low. Check when is the next snow storm in ontario for updates as the weekend approaches.
Will this storm affect travel at Pearson Airport?
Yes. Expect delays and cancellations between 6 a.m. and 6 p.m. Friday. The combination of heavy snow and low visibility will likely reduce arrival/departure rates. Check your airline before heading out.
Is this a polar vortex collapse event?
No. This is a fast-moving Alberta clipper, not a polar vortex collapse. A polar vortex collapse involves a much larger, slower-moving Arctic outbreak lasting several days.