Japan earthquakes

M4.6 earthquake 107 km N of Naze, Japan

A magnitude 4.6 earthquake struck 107 km N of Naze, Japan on Tue, Mar 17, 1981, 10:26 AM JST (01:26 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.3 79 km N of Tatsugō, Japan. This one was a foreshock.

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The earthquake

Magnitude: 4.6 (mb), light
Local time: Tue, Mar 17, 1981, 10:26 AM JST
UTC: 1981-03-17 01:26:44 UTC
Depth: 33.0 km (20.5 mi), shallow
Epicenter: 29.331° N, 129.430° 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 1.6 and up: 4 in the 60 days after this one and 12 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 usp0001crc (also filed as iscgemsup629990). Read Tue, Sep 22, 2026, 4:10 PM UTC.