M4.2 earthquake 95 km W of Illapel, Chile

A magnitude 4.2 earthquake struck 95 km W of Illapel, Chile on Tue, Sep 22, 2015, 5:54 AM GMT-3 (08:54 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.4 Off the coast of Valparaiso, Chile. This one was a foreshock.

Map

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

1 person reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.

How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.

Reviewed by a seismologist.

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

Within 100 km, magnitude 1.5 and up: 167 in the 60 days after this one and 32 in the 30 days before it.

The first 60 of 167.

From the USGS Earthquake Hazards Program and its partner networks, event us20003mt3. Read Wed, Sep 23, 2026, 11:44 AM UTC.