A powerful 7.4-magnitude earthquake struck northern Japan today, Monday, April 20, 2026. The seismic event has triggered urgent tsunami warnings across several coastal regions, with national broadcaster NHK reporting that waves could reach heights of up to 3 metres.
Immediate Safety Advisories
Authorities have issued a critical evacuation order for residents in the following areas:
- Iwate Prefecture
- Hokkaido
Residents are urged to move to higher ground immediately. Officials have stressed that tsunami waves may strike repeatedly and could arrive earlier or later than originally forecast. People are advised to stay away from all coastlines and river mouths until all warnings are officially lifted.
Situation Overview
- Magnitude: 7.4
- Primary Risk: Tsunami waves (estimated up to 3m)
- Current Status: Emergency services are on high alert, and damage assessments are underway.
- Historical Context: Japan accounts for nearly 18% of the world’s earthquakes due to its location on the Pacific “Ring of Fire.” This event brings back memories of the 2011 magnitude-9.0 quake, though current emergency protocols have been significantly enhanced since that tragedy.
Emergency Note: If you are in the affected coastal regions, do not wait for the waves to be visible. Evacuate to a safe location or a designated tsunami evacuation tower immediately.