Only authorized Government Issuers are responsible for issuing emergency alerts. These include federal, provincial, and territorial governments.
Federally, emergency alerts are issued most frequently by Environment and Climate Change Canada.
Each provincial or territorial government decides who will have the authority to issue alerts within their jurisdictions. For example, emergency alerts could be issued by provincial or territorial emergency management offices or in some cases, by municipal emergency management offices or local police and fire departments.
Media companies, including television, radio stations, cable and satellite distributors, and wireless service providers receive these emergency alerts and relay them to their customers.