Japan earthquakes

M5.1 earthquake 116 km E of Yamada, Japan

A magnitude 5.1 earthquake struck 116 km E of Yamada, Japan on Thu, Aug 12, 1982, 8:36 PM JST (11:36 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.3 114 km E of Yamada, Japan. This one was a foreshock.

Yamada forecast More in Japan

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The earthquake

Magnitude: 5.1 (mb), moderate
Local time: Thu, Aug 12, 1982, 8:36 PM JST
UTC: 1982-08-12 11:36:15 UTC
Depth: 33.0 km (20.5 mi), shallow
Epicenter: 39.396° N, 143.295° 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 2.1 and up: 12 in the 60 days after this one and 6 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0001p07 (also filed as iscgem593626). Read Tue, Sep 22, 2026, 3:36 PM UTC.