Japan warns of potential mega quake after M7.7 earthquake strikes

A powerful magnitude 7.7 earthquake struck Japan, prompting authorities to issue an early warning about the risk of a larger mega quake in the following weeks.

Published 13sem3 sources✓ ConfirmedImportantupdated 13sem

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The fact

This type of warning is rare and based on Japan's historical seismic patterns, particularly concerning the Pacific subduction zone.

The population was urged to intensify disaster preparedness measures.

3 sources — click a link to read an article on the topic:

NYT World

South China Morning Post

NHK World

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Auto-synthesis from 3 media sources · identified on April 22, 2026

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