Active Weather Alerts
Yellow Advisory - Frost
Issued: 9:37 PM Sep. 21, 2026 – Environment and Climate Change Canada
Conditions are favourable for the development of frost tonight. Patchy frost is likely early Tuesday morning. ### Damage to plants, trees, and crops is possible. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on social media using #ONStorm.
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