Chile earthquakes

M4.0 earthquake 9 km NNE of Iquique, Chile

A magnitude 4.0 earthquake struck 9 km NNE of Iquique, Chile on Thu, May 28, 2015, 6:55 AM GMT-3 (09:55 UTC), 44 km (27 mi) below the surface.

A larger quake followed: M5.3 13 km SW of Iquique, Chile. This one was a foreshock.

Iquique forecastMore in Chile

Map

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

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The earthquake

Magnitude
4.0 (mwr), light
Local time
UTC
2015-05-28 09:55:14 UTC
Depth
43.6 km (27.1 mi), shallow
Epicenter
20.145° S, 70.102° W
Region
Chile
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

Fault motion and ground failure

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

Faulting
Reverse (thrust)
Moment magnitude
4.0 Mwr
Nodal plane 1
Strike 350°, dip 28°, rake 98°
Nodal plane 2
Strike 161°, dip 63°, rake 86°

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 5.5 km horizontally, 5.6 km in depth
Magnitude uncertainty
±0.06
Stations used
0

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 12 in the 60 days after this one and 10 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us20002jyq. Read Tue, Sep 29, 2026, 2:42 PM UTC.