Japan earthquakes

M4.8 earthquake 111 km E of Yamada, Japan

A magnitude 4.8 earthquake struck 111 km E of Yamada, Japan on Wed, Aug 11, 1982, 3:07 PM JST (06:07 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.1 113 km E of Yamada, Japan. This one was a foreshock.

Yamada forecast More in Japan

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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: 4.8 (ms), light
Local time: Wed, Aug 11, 1982, 3:07 PM JST
UTC: 1982-08-11 06:07:55 UTC
Depth: 33.0 km (20.5 mi), shallow
Epicenter: 39.363° N, 143.240° 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: OPERATOR_ASSIGNED

Nearest places

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

Nearby

Within 100 km, magnitude 1.8 and up: 15 in the 60 days after this one and 2 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0001nyp (also filed as iscgemsup593523). Read Tue, Sep 22, 2026, 8:10 AM UTC.