Tools
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The QuakeAlert app will alert you that an earthquake has occurred and will send a push alert to your mobile device. This alert includes information about the expected shaking intensity at your location and the time until the expected shaking, along with a message instructing you to drop, cover, and hold on.

Warning times can range from 10 to 60+ seconds depending on the location, depth, and magnitude of the earthquake’s epicenter.

The QuakeAlert app uses data provided by the USGS and ShakeAlert. This App is an official pilot created in partnership with the U.S. Geological Survey and should be considered a “beta” product with no implied guarantees.
From version QuakeAlertUSA 1.0.11:
Bypass Do Not Disturb is here! Get audio alerts of incoming earthquakes at all times even if your phone is on silent or do not disturb.
My Quakes screen will only show past alerts that were sent to your device for new users. (existing users see some historical earthquakes).
Metropolitan Transportation Commission logo added to menu
Squashed a few bugs
All versions
May 19, 2020
February 18, 2020