Geotechnical Engineering LLC

Tsunami watch — tsunamigenic earthquakes

Shallow, large (M≥6.5) Pacific earthquakes screened for tsunami potential — the events that matter for the Pacific coast, Alaska and Hawaii. Source data from USGS; official alerts from U.S. NWS Tsunami Warning System (NTWC / PTWC).

🌊 In a real emergency, always follow the official U.S. NWS Tsunami Warning System (NTWC / PTWC). Official portal →
23
Events screened
M 8.8
Max magnitude
3
High potential
10
Events M≥7.0

Event map

Highest tsunami potential

Most recent events