Home › Weather › Weather Winter Storm Warning Calgary
Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Canada Scope Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
If a winter storm warning is issued for Calgary, expect heavy snow, blowing snow, or freezing rain within 12 to 24 hours, and you should postpone non-essential travel. Environment and Climate Change Canada issues these warnings when conditions pose an immediate threat to life or property.
What does a winter storm warning mean for Calgary?
A winter storm warning is the highest alert for winter weather in Calgary. It means a severe storm is imminent or occurring, with snowfall rates exceeding 15 centimetres in 12 hours, wind gusts over 40 km/h causing zero visibility, or ice accretion from freezing rain. Unlike a watch, a warning requires immediate action—stay indoors and off the roads.
How does Calgary’s winter storm warning compare to other regions?
Calgary’s warnings typically involve dry, cold snow rather than wet coastal storms. As shown in the live ranking above, Calgary’s winter storm warnings rank alongside those in southern Alberta for frequency, but with lower risk of prolonged power outages compared to British Columbia’s freezing rain events. The city’s Chinook winds can rapidly change conditions, so warnings may be upgraded or cancelled with little notice.
Frequently asked questions
How long does a Calgary winter storm warning usually last?
Most warnings last 12 to 24 hours, though they can be extended if the storm stalls. Always check the expiry time in the alert—times are listed in MST.
Should I drive during a winter storm warning?
No. The warning indicates dangerous or impossible travel conditions. Stay off roads unless you are in an emergency. If you must drive, check Canada Scope’s weather hub for road conditions.
What’s the difference between a winter storm watch and a warning?
A watch means conditions are possible within 24–48 hours—start preparing. A warning means the storm is imminent (within 12 hours) and you should take immediate protective action.
Sources
For real-time alerts across the country, visit Canada Weather Warnings. If you are new to these alerts, read our explainer on Britons Weather Emergency Alerts for a general overview of warning systems.