M4.8 earthquake 50 km SE of Nemuro, Japan

A magnitude 4.8 earthquake struck 50 km SE of Nemuro, Japan on Mon, Jun 18, 1973, 6:23 AM JST (21:23 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.2 40 km SSW of Nemuro, Japan. This one was a foreshock.

Map

Where this earthquake was located, with the others nearby. Select one for its page.

No one has reported feeling this quake to the USGS.

Reviewed by a seismologist.

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

Within 100 km, magnitude 1.8 and up: 117 in the 60 days after this one and 33 in the 30 days before it.

The first 60 of 117.

From the USGS Earthquake Hazards Program and its partner networks, event usp0000286. Read Tue, Sep 22, 2026, 10:30 PM UTC.