A powerful 7.7-magnitude earthquake struck northern Japan, triggering tsunami warnings, Japan's Meteorological Agency (JMA) said on Monday. Roughly 40 minutes after the earthquake, a tsunami wave ...

A 7.7 magnitude earthquake Monday off northern Japan sparked a short-lived tsunami alert and an advisory of a slightly higher risk of a possible megaquake for its coastal areas. The Cabinet Office and ...

Residents of the affected region were urged to stay away from coastal areas, while tens of thousands of people were told to go to higher ground. Coverage on this live blog has ended. 'No abnormalities ...

About 1 hour after the earthquake, SWOT captured the offshore tsunami wave field near Kamchatka shown as two red–blue measurement swaths. These data constrained the inferred initial tsunami ...

The Japanese government has warned of a slightly heightened risk of a megaquake in the next week after a strong 7.4-magnitude earthquake struck off the country’s northeastern coast on Monday, ...

Improving tsunami hazard assessments depends on understanding what happens at the moment an earthquake ruptures beneath the seafloor, especially near deep-ocean trenches where measurements are often ...