The U.S. Geological Survey have been developing an earthquake early warning system called ShakeAlert for nearly two decades. ShakeAlert is now operating in California, Oregon and Washington state The U.S. Geological Survey are now looking to expand the service to Alaska.

The system monitors for seismic activity and then calculates where the next earthquakle will be, alerting those locations by push notifications to their phones. The alert is intended to provide enough warning for people to prepare.

A wonderful use of technology to reduce the risk of injury.