Seasonal weather hazards

Seasonal weather hazards

Information on severe weather types, and weather alerts, and advice on how to stay safe and prepared for spring, summer, fall and winter weather.

Services and information

Be prepared for winter weather

Winter weather alerts and practical advice to handle winter weather safely.

Be prepared for summer weather

Summer weather alerts and practical advice to handle summer weather safely.

Cold season weather hazards

Blizzards, freezing rain, ice pellets, ice fog, rain, snow, wind chill, smog, winter storm.

Warm season weather hazards

Lightning, rain, floods, thunderstorms, wind, storm surges, tornadoes, hail, heat and humidity, UV index, air quality, fog, frost.

Extreme heat events and heat warnings

About extreme heat, when we issue warnings, parts of a heat warning, terms we use in heat forecasts, our role in extreme heat and extreme heat and air quality.

How to use the humidex

About the humidex, where we use the humidex, understanding humidex readings, humidex and your health, how we calculate humidex, and the humidex table.

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