Monitor tsunami activity worldwide. Real-time warnings, alerts, and ocean conditions from NOAA buoys and seismic stations.
View Tsunami MapReal-time tsunami warnings and watches from NOAA Pacific Tsunami Warning Center.
Monitor tsunami-prone regions: Pacific Ring of Fire, Indonesia, Japan, Chile, Alaska.
Ocean buoy readings showing water level changes and seismic sea wave detection.
Color-coded alerts: Warning (red), Watch (orange), Advisory (yellow).
Tsunamis are giant ocean waves caused by underwater earthquakes, volcanic eruptions, or landslides. Our tracker monitors:
Areas we closely monitor for tsunami activity:
Tsunamis can travel at speeds up to 500 mph (800 km/h) in deep ocean water, slowing as they approach shore but gaining height.
Warnings are issued when an earthquake magnitude 7.0+ occurs under or near the ocean with potential to generate dangerous waves.
Depends on distance from source. Coastal areas near the earthquake may have only minutes; distant shores may have hours of warning.