M4.1 earthquake 251 km W of Tual, Indonesia

A magnitude 4.1 earthquake struck 251 km W of Tual, Indonesia on Mon, Jul 6, 1987, 8:51 PM GMT+9 (11:51 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.5 282 km SSE of Amahai, Indonesia. 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 1.5 and up: 8 in the 60 days after this one and 5 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event usp00036dd. Read Tue, Sep 22, 2026, 10:41 AM UTC.