Japan earthquakes

M4.8 earthquake 67 km N of Yonakuni, Japan

A magnitude 4.8 earthquake struck 67 km N of Yonakuni, Japan on Wed, Mar 11, 1987, 11:15 AM JST (02:15 UTC), 164 km (102 mi) below the surface.

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The earthquake

Magnitude
4.8 (mb), light
Local time
UTC
1987-03-11 02:15:02 UTC
Depth
164.4 km (102.2 mi), intermediate-depth
Epicenter
25.066° N, 123.113° 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

Nearest places

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

Nearby

Within 100 km, magnitude 1.8 and up: 0 in the 60 days after this one and 5 in the 30 days before it.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp000336d. Read Tue, Sep 22, 2026, 4:03 PM UTC.