Mexican Seismic Alert System
Sistema de Alerta Sísmica de México
- Date
- 1991 · confidence high
- Place
- Mexico City, Mexico
- Credited to
- Centre for Seismic Instrumentation and Recording (CIRES) and Javier Barros Sierra Foundation
- Field
- Cosmos & Earth
⚠️ Disputed: the sources disagree.
What it is
A network of sensors on the Guerrero coast that detects earthquakes and warns the capital about 60 seconds ahead through radio and loudspeakers. It was created after the 1985 earthquake and is the first public warning system.
Its world priority is disputed: Japan had warning systems for rail from the 1960s-1990s (UrEDAS, 1992); SASMEX is the first for general public use.
What it led to
- Earthquake warnings by phone and radio
- Early-warning systems in Japan and California
- Mexico City evacuation protocols