




What is ShakeAlert®?
The ShakeAlert® Earthquake Early Warning (EEW) System, managed by the U.S. Geological Survey, detects significant earthquakes quickly enough so that alerts can be delivered to people and automated systems potentially seconds before strong shaking arrives. ShakeAlert is the nation’s only public EEW system and it serves over 50 million residents and visitors in California, Oregon, and Washington. The purpose of the ShakeAlert System is to reduce the impact of earthquakes to save lives and vital systems.
The USGS works with licensed Alert Delivery Partners who use USGS-issued ShakeAlert Messages to alert people to take a protective action or to trigger automated actions. These automated actions could include slowing trains, closing water valves, turning on backup generators, issuing public announcements, and many others.
For general information about ShakeAlert, please visit: usgs.gov/ShakeAlert
To get ShakeAlert-powered alerts on your cell phone, please visit: usgs.gov/FAQ/BeShakeAlertSafe
Who is this website for?
This website provides information and resources for ShakeAlert System Alert Delivery Partners, Communication, Education, and Outreach Partners, and the media. A wide range of multimedia resources inform, educate, and inspire people, communities, and organizations to build resilience to earthquake impacts by being ShakeAlert Ready and part of a hazard-ready nation.
PARTNER ORGANIZATIONS
The U.S. Geological Survey (USGS) has developed the ShakeAlert Earthquake Early Warning system along with many partner organizations.
