**GAO-06-519**                      Published: Jun 05, 2006. Publicly Released: Jun 05, 2006.                  

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## Highlights

The 2004 Indian Ocean tsunami raised questions about U.S. preparedness for such an event. The National Oceanic and Atmospheric Administration (NOAA) leads U.S. detection and warning efforts and partners with federal and state agencies in the National Tsunami Hazard Mitigation Program (NTHMP) to reduce tsunami risks. In 2005, Congress appropriated $17.24 million in supplemental funding to enhance these efforts. This report (1) identifies U.S. coastal areas facing the greatest tsunami hazard and the extent to which potential impacts have been assessed, (2) discusses the effectiveness of the existing federal tsunami warning system, (3) describes efforts to mitigate the potential impacts of tsunamis on coastal communities, and (4) assesses NOAA's efforts to develop long-range plans for federal tsunami programs.

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## Recommendations for Executive Action

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## Topics

Economic Development

Disaster planningEmergency managementEmergency preparednessIntergovernmental relationsRisk assessmentTsunamisWarning systemsWeather forecastingCoastlineRadio