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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Canada Perspective Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
As of this morning, Environment Canada has winter storm warnings active for northern Ontario and snowfall warnings for parts of southern Ontario. A low-pressure system crossing the Great Lakes is bringing heavy snow and gusty winds, with conditions expected to persist through the evening. Residents in affected areas should monitor alerts closely.
What types of weather warnings are most common across Ontario?
Ontario’s vast geography means warning types shift by region and season. In winter, winter storm, snowfall, and freezing rain warnings dominate, especially along the Lake Ontario snowbelt and north of Superior. Spring and summer bring severe thunderstorm and tornado warnings, though tornadoes are rare and typically confined to southern Ontario. Environment Canada issues each warning based on specific thresholds—for example, a winter storm warning requires at least 15 centimetres of snow combined with winds over 40 km/h.
How can you track active weather warnings today?
The most reliable source is Environment and Climate Change Canada’s public alerts page, which offers a live map of all warnings. The map lets you zoom into any region and see detailed bulletins for northern Ontario weather warnings today or southern Ontario weather warnings tomorrow. Local radio and The Weather Network also relay updates. For immediate threats like a tornado warning Ontario today, sign up for wireless emergency alerts on your phone.
What does a winter storm warning mean for my area?
A winter storm warning means heavy snow combined with strong winds is expected or already occurring. Travel becomes hazardous due to low visibility and drifting snow. Stay off roads if possible and check our winter storm warning guide for safety tips.
Where can I find a live map of Ontario weather warnings today?
Environment Canada’s alerts page shows an interactive ontario weather warnings today live map. You can filter by region—for example, select southern Ontario to see snowfall or freezing rain warnings. The map updates every few minutes. For a plain-text list, visit Canada Weather Warnings.
How do tornado warnings differ in Ontario?
A tornado warning Ontario today means a tornado has been spotted or indicated by radar. Unlike winter warnings, these are short-fuse alerts requiring immediate shelter. Southern Ontario gets the most activity, but northern areas can also see them. See what a yellow weather warning means for context on alert levels.