Major 7.4-magnitude quake hits off Japan, tsunami warning issued

A powerful earthquake registering a preliminary magnitude of 7.4 struck off the northeastern coast of Japan on Monday afternoon, as reported by the Japan Meteorological Agency.

The agency issued a tsunami warning, predicting waves of up to 9.84 feet to potentially impact the Iwate, Aomori, and Hokkaido prefectures.


An earthquake ‌with a preliminary magnitude of 7.4 struck off ​the northeastern coast of ​Japan on Monday afternoon
An earthquake ‌with a preliminary magnitude of 7.4 struck off ​the northeastern coast of ​Japan on Monday afternoon. USGS

The earthquake’s epicenter was located in the Pacific Ocean at a depth of 10 kilometers, according to the JMA.

This quake registered an ‘upper 5’ on Japan’s seismic intensity scale, indicating a force strong enough to make it difficult for people to remain standing.


A television screen shows a news report on Japan Meteorological Agency's tsunami warning, saying it expected tsunami waves of up to 9.84 feet to reach large coastal areas in northern Japan after an earthquake with a preliminary magnitude of 7.4 struck off the northeastern coast of Japan, in Tokyo, Japan April 20, 2026
A television screen shows a news report on Japan Meteorological Agency’s tsunami warning, saying it expected tsunami waves of up to 9.84 feet to reach large coastal areas in northern Japan after an earthquake with a preliminary magnitude of 7.4 struck off the northeastern coast of Japan, in Tokyo, Japan on April 20, 2026 REUTERS

Such tremors often result in the collapse of unreinforced concrete-block walls.

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