Japan earthquakes

M6.0 earthquake 104 km ESE of ?tsuchi, Japan

A magnitude 6.0 earthquake struck 104 km ESE of ?tsuchi, Japan on Sat, Dec 24, 1977, 6:14 AM JST (21:14 UTC), 41 km (25 mi) below the surface.

A larger quake followed: M6.1 37 km SSE of ?funato, Japan. This one was a foreshock.

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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude: 6.0 (ms), strong
Local time: Sat, Dec 24, 1977, 6:14 AM JST
UTC: 1977-12-23 21:14:26 UTC
Depth: 41.0 km (25.5 mi), shallow
Epicenter: 39.068° N, 143.047° E
Region: Japan
Tsunami flag: No
Status: Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Depth from: CONSTRAINED_BY_DEPTH_PHASES
Stations used: 115

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 2.5 and up: 13 in the 60 days after this one and 5 in the 30 days before it.

After

Before

Earthquakes today Japan earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0000s79 (also filed as iscgem689450). Read Wed, Sep 23, 2026, 2:07 PM UTC.