Japan earthquakes

M4.7 earthquake 93 km E of Hasaki, Japan

A magnitude 4.7 earthquake struck 93 km E of Hasaki, Japan on Mon, Aug 9, 1982, 4:35 PM JST (07:35 UTC), 59 km (36 mi) below the surface.

A larger quake followed: M5.6 79 km ESE of Hitachi, Japan. This one was a foreshock.

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The earthquake

Magnitude: 4.7 (mb), light
Local time: Mon, Aug 9, 1982, 4:35 PM JST
UTC: 1982-08-09 07:35:26 UTC
Depth: 58.6 km (36.4 mi), shallow
Epicenter: 35.575° N, 141.850° 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.

Nearest places

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

Nearby

Within 100 km, magnitude 1.7 and up: 4 in the 60 days after this one and 31 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0001nxf (also filed as iscgemsup593401). Read Tue, Sep 22, 2026, 8:55 PM UTC.