M4.1 earthquake 228 km NNW of Tobelo, Indonesia

A magnitude 4.1 earthquake struck 228 km NNW of Tobelo, Indonesia on Sat, Apr 20, 2002, 4:44 AM GMT+8 (20:44 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.2 235 km NW of Tobelo, 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: 27 in the 60 days after this one and 9 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event usp000b2su. Read Wed, Sep 30, 2026, 3:47 AM UTC.