On December 31, 2018, the City of Los Angeles, under the oversight of Mayor Eric Garcetti and built on the ShakeAlert system developed by the U.S. Geological Survey, released the ShakeAlertLA mobile app which sends alerts to users within Los Angeles County that an earthquake of greater than magnitude 5.0 or level IV intensity was detected and that they may soon feel shaking. The app is available for both Apple and Android devices and available in both English and Spanish. You can also use this app to prepare for an earthquake, get details on recent earthquakes, and find help after an earthquake.
A Collaborative Partnership
The ShakeAlertLA app is brought to you by the Office of Los Angeles Mayor Eric Garcetti, the Information Technology Agency and the Department of Emergency Management. It has been made possible by support from the Annenberg Foundation and the Mayor’s Fund for Los Angeles. This app is an official pilot in partnership with the U.S. Geological Survey.
On July 24, 2019, the threshold for notifications was lowered to earthquakes of magnitude 4.5 or larger.