M4.2 earthquake 92 km WSW of Illapel, Chile

A magnitude 4.2 earthquake struck 92 km WSW of Illapel, Chile on Sun, Sep 20, 2015, 9:36 AM GMT-3 (12:36 UTC), 17 km (11 mi) below the surface.

A larger quake followed: M4.4 80 km W of La Ligua, Chile. 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: 159 in the 60 days after this one and 40 in the 30 days before it.

The first 60 of 159.

From the USGS Earthquake Hazards Program and its partner networks, event us20003m6j. Read Tue, Sep 22, 2026, 1:22 AM UTC.