Environment and Climate Change Canada (formerly known as Environment Canada in 2015) is changing how it issues weather alerts, introducing a colour-coded system meant to make warnings easier to understand at a glance, it announced on Wednesday.

The federal agency will now label alerts as yellow, orange, or red, depending on how serious the expected weather is. Yellow signals hazardous conditions that might cause minor disruptions. Orange points to more severe weather that could cause major issues over a wider area. Red is reserved for extreme and potentially life-threatening events, the type of storms that can cause widespread damage and long-lasting impacts.

Meteorologists will use a new internal system that mixes forecast models, real-time weather data, and expected impacts on people a

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