Canada’s national emergency alert system, Alert Ready, is scheduled to be tested in most provinces and territories today. According to reporting from multiple outlets, test messages will be sent at set times between the morning and early afternoon windows. The tests are expected to occur in nearly every province and territory, with specific exceptions named by sources: Quebec and Saskatchewan are not included in today’s test.

The system is designed to deliver emergency notifications to the public through participating broadcasters and mobile/cellular alerting channels. While the test messages are not meant to indicate a real emergency, the timed alerts are used to check system readiness and public receipt of the notifications. Residents in regions included in the test window may receive messages even though no active threat is present.

No additional details about the content of the alerts beyond the fact that they are tests are provided in the referenced summaries. The overall purpose is to verify that the alerting infrastructure works as intended across participating jurisdictions.