Android's earthquake warning system alerted 11 Million people in Venezuela
Google's built-in Android earthquake warning system alerted 11.4 million people in Venezuela before a recent earthquake struck. The system uses smartphone accelerometers to detect shaking and send early alerts. Users can find and enable the feature in their phone's Safety & Emergency settings.
Background
- Android's built-in Earthquake Alert System uses a phone's accelerometer (the sensor that detects screen orientation) to sense seismic waves. When enough phones in an area detect shaking simultaneously, Google's servers can pinpoint an earthquake's epicenter and magnitude, then send warnings to nearby devices — often before the damaging shaking arrives.
- The system was activated ahead of a major earthquake in Venezuela on August 21, 2024, giving some users up to 30 seconds of warning. Google reported that 11.4 million Android users received the alert.
- This system is free, requires no app download, and works wherever Google Play Services is available. Users can find it in Settings > Safety & Emergency > Earthquake Alerts.
- The feature is distinct from ShakeAlert, a separate government-run system in the US (California, Oregon, Washington) that uses professional seismometers rather than phone sensors.