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Is there a system to warn populations of an imminent occurrence of a tsunami?

NOAA (National Oceanic and Atmospheric Administration) maintains the U.S. Tsunami Warning Centers, and work in conjunction with USGS seismic networks to help determine when and where to issue tsunami warnings. Also, if an earthquake meets certain criteria for potentially generating a tsunami, the pop-up window and the event page for that earthquake on the USGS Latest Earthquakes Map will include a visible link to the Tsunami Warning Center.

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