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The NWS operates two Tsunami Warning Centers

National Tsunami Warning Center (NTWC) National Tsunami Warning Center (NTWC)
The NTWC provides tsunami warning guidance for all U.S. coastal states (except Hawaii), Puerto Rico, the Virgin Islands, and the Canadian coastal provinces.

Pacific Tsunami Warning Center (PTWC) Pacific Tsunami Warning Center (PTWC)
The PTWC provides tsunami warning guidance for Hawaii and other countries in the Pacific Ocean, Indian Ocean, and Caribbean Sea.

International Coordination

Caribbean Tsunami Warning Program Caribbean Tsunami Warning Program (CTWP)
The CTWP provides support and guidance for tsunami observations, including seismic and sea level systems, tsunami forecasting, communications and education and preparedness in the Caribbean region.

International Tsunami Information Center (ITIC)International Tsunami Information Center (ITIC)
Operated by the NWS on behalf of the Intergovernmental Oceanographic Commission of UNESCO, the ITIC supports the IOC's Tsunami Program which focuses on the coordination of tsunami warning and mitigation systems globally. The ITIC provides direct support to Member States in the Pacific by monitoring and recommending operational improvements to the Tsunami Warning System in the Pacific, and by working with countries to increase tsunami awareness and preparedness, and promote education and research.

Is your community prepared for the next destructive tsunami?

Tsunami ReadyTsunamiReady® Program
A program designed for recognition for Communities that have met certain standards of tsunami preparedness.

National Tsunami Hazard Mitigation Program (NTHMP)National Tsunami Hazard Mitigation Program (NTHMP)
The NTHMP is a partnership between NOAA, the United States Geological Survey (USGS), the Federal Emergency Management Agency (FEMA), and the 28 U.S. Coastal States, Territories, and Commonwealths. The NTHMP is designed to reduce the impact of tsunamis through hazard assessment, warning guidance, and mitigation.

Want more NOAA Tsunami Information?

NOAA Tsunami Program Fact Sheets
2 page | 4 page 11x17 folded | 4 page 8 1/2x11

NOAA summarizes the NOAA Tsunami Program in these fact sheets.

Tsunami Safety
NWS provides tsunami safety information.

NOAA Tsunami Site
NOAA posts additional information and numerous links to information related to tsunamis on this site.

NOAA Center for Tsunami Reseach
The NOAA Center for Tsunami Research at the Pacific Marine Environment Laboratory concentrates on developing methods and tools to reduce the tsunami hazard and protect life.

Historical Tsunami Data
NOAA posts extensive amounts of data on tsunamis throughout history.

National Data Buoy Center
NDBC provides interactive access to real-time water level data from throughout the world, including from Deep-ocean Assessment and Reporting of Tsunamis (DART) real-time tsunami monitoring systems.

Tide Data
NOS provides a user friendly interface to access real-time water level information for US coasts. is the U.S. government's official web portal to all federal, state and local government web resources and services.