M4.5 earthquake 59 km W of Iquique, Chile

A magnitude 4.5 earthquake struck 59 km W of Iquique, Chile on Tue, Jul 23, 2013, 4:16 PM GMT-4 (20:16 UTC), 26 km (16 mi) below the surface.

A larger quake followed: M5.2 58 km W of Iquique, Chile. This one was a foreshock.

Map

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

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.	Scale	Computed by	Notes
4.5	mb, body-wave	USGS National Earthquake Information Center	Preferred · Reviewed · 19 stations
4.4	Mwr, regional moment	USGS National Earthquake Information Center	Moment tensor · Reviewed

The USGS’s account of the effects of this earthquake.

Felt (II) at Alto Hospicio, Huara, Iquique and Pozo Almonte.

From the USGS event page for usb000il0b. U.S. Geological Survey text and figures are in the public domain.

No one has reported feeling this quake to the USGS.

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: 9 in the 60 days after this one and 4 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event usb000il0b. Read Sun, Oct 4, 2026, 4:43 PM UTC.