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Seconds Matter: New Earthquake Warning for Eastern Canada
29 Nov
Summary
- New earthquake early warning system now active in Quebec and Ontario.
- Alerts provide crucial seconds of warning before shaking begins.
- System expansion aims to mitigate significant damage and risks.

A vital network of sensors designed to provide early notice of earthquakes is now fully operational across Quebec and eastern Ontario. Natural Resources Canada recently announced the launch of this enhanced Earthquake Early Warning System. Should an earthquake registering a magnitude of five or higher be detected, the system will swiftly transmit emergency alerts, comparable to tornado or Amber Alerts.
These alerts offer precious seconds of advance warning before seismic shaking commences, empowering individuals to seek immediate shelter and protect themselves effectively. The department is also developing specialized alerts for critical sectors, enabling actions such as halting trains, pausing surgeries, and closing infrastructure like bridges and tunnels.
This expansion complements the existing system in western British Columbia, acknowledging that eastern Ontario and southern Quebec face moderate to high earthquake risks. Natural Resources Canada estimates that a major earthquake in these urban areas could result in tens of billions of dollars in damages, underscoring the importance of this new protective measure.
