Science ❯ Geophysics ❯ Seismology ❯ Earthquake Magnitude

Tsunami Formation

Powerful 7.6 Quake Off Northern Japan Triggers Tsunami Warnings

Officials ordered coastal evacuations after initial tsunami surges were recorded, with a national task force leading the response.

M7.8 Quake Off Kamchatka Triggers Tsunami Alerts as Alaska Advisories Are Downgraded

Tsunami Warnings Downgraded After Magnitude-8.8 Quake Off Kamchatka