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A North American severe-weather field guide

One continent. Two weather services.

Tornadoes, floods, heat, winter storms, and wildfire smoke don't stop at the 49th parallel — but the alerts do. Continental Signals reads the National Weather Service and Environment and Climate Change Canada side by side, in plain language, for people who need to make a decision now.

US · NWS · api.weather.govCA · ECCC · weather.gc.ca
The five hazards
Practical

Find help when the weather turns.

Cooling centres, warming centres, libraries with filtered air, shelters extending hours, and local health guidance.