If you are in a coastal area and experience a strong earthquake, follow these immediate steps from the National Weather Service : Feel: Strong or long-lasting ground shaking [18, 20].
Tsunami waves exceeding 80 cm were confirmed along the northern coast [34].
As of April 28, 2026, there are no active tsunami warnings, advisories, or watches for the [17] or Japan [29]. Recent activity has calmed following a major tsunami event earlier this month. Recent Major Event: Northern Japan (April 2026)
A loud roar coming from the ocean, similar to a train or jet [18]. Take Action:
A sudden, unusual rise or fall of ocean waters (the "drawback") [18, 20].