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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the BuzzLayer Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
A weather warning is an urgent alert issued by Environment and Climate Change Canada when hazardous conditions—such as heavy snow, freezing rain, high winds, or extreme heat—are imminent or occurring. These warnings are specific to a region and demand immediate attention to protect life and property.
What does a weather warning mean for your area?
When a weather warning is posted for your community, it means conditions pose a direct threat to safety or travel. For example, a winter storm warning in Ontario can bring 30 centimetres of snow and wind gusts over 70 km/h, making roads impassable. In southern Ontario, weather warnings today often target the Greater Toronto Area and Ottawa corridor, where lake-effect snow or flash-freezing rain can disrupt commutes. Always check the specific warning type—whether for snow, wind, or heat—to know what to expect.
How do you stay safe during a weather warning?
During any weather warning, the first step is to postpone non-essential travel. For winter warnings, keep an emergency kit in your vehicle with blankets, a shovel, and a flashlight. In heat warnings, stay hydrated and avoid outdoor activity during peak afternoon hours. For severe thunderstorm or tornado warnings, move to a basement or interior room immediately. Local authorities and Canada weather warnings pages provide real-time updates for your region.
What is the difference between a weather watch and a warning?
A watch means conditions are possible within 24–48 hours; a warning means they are imminent or occurring. For example, a tornado warning requires immediate shelter, while a watch means stay alert.
How do I get weather warnings for Ottawa or Toronto today?
Check Environment Canada’s website or the Canada weather hub for your city. For weather warning Ottawa or weather warning Toronto, alerts are also broadcast on local radio and through the WeatherCAN app.
Are weather warnings issued for all of Canada at once?
No. Warnings are region-specific. For instance, a southern Ontario weather warning today may not apply to British Columbia. Always check your local forecast for ontario weather warnings today or canada weather warnings today.