ShakeAlert Infographic: Detect, Deliver, Protect

A ShakeAlert Message is an early warning from a network system that detects significant earthquakes quickly enough so that alerts can be delivered to people and automated systems potentially seconds before shaking arrives. ShakeAlert Messages are a product of the Advanced National Seismic System (ANSS).  

ShakeAlert can protect people and infrastructure by triggering automatic actions like slowing down trains to prevent derailments, opening firehouse doors so they don’t jam shut, and closing valves to protect water systems.