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ShakeAlert® Earthquake Early Warning

ShakeAlert earthquake early warning system is now available to more than 50 million people in California, Oregon and Washington, the most earthquake-prone region in the conterminous U.S.


Today’s debut of ShakeAlert-powered public alerting to mobile phones in Washington completes the U.S. Geological Survey and partners’ West Coast rollout of this mode of alert delivery to the public that began with California in 2019 and expanded to Oregon in March 2021. People in these three states can now receive alerts from FEMA’s Wireless Emergency Alert system, third-party phone apps, and other technologies.


“USGS science is the backbone of hazard assessment, notification, and response capabilities for communities nationwide so they can plan for, and bounce back from, natural disasters,” said David Applegate, USGS acting Director. “Systems powered by ShakeAlert can turn mere seconds into opportunities for people to take life-saving protective actions or for applications to trigger automated actions that protect critical infrastructure. An effort like this takes the dedication, ingenuity and hard work of dozens of partners with the same vision, and the USGS is proud to have been part of a collaborative team that made this robust public safety system available for millions of citizens on the West Coast.”


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