USGS

Magnitude 5.5 earthquake — 57 km E of Mutsu, Japan

A magnitude 5.5 earthquake occurred near 57 km E of Mutsu, Japan on 2026-08-01 02:48 UTC at a depth of about 82 km, according to the U.S. Geological Survey.

Updated 2026-08-01 04:23 UTC

View the official USGS event page

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Frequently asked questions

How strong was the 57 km E of Mutsu, Japan earthquake?

It measured magnitude 5.5 on the USGS scale. Shaking felt locally also depends on depth and distance.

Was there a tsunami?

No tsunami warning was flagged by USGS. Always follow official local guidance.

How can I get alerts for future earthquakes here?

Install the free SeismoWatch Android app, draw a box over the area, set a minimum magnitude, and turn alerts on.