Chile earthquakes

M3.9 earthquake 15 km SW of Valparaíso, Chile

A magnitude 3.9 earthquake struck 15 km SW of Valparaíso, Chile on Wed, Apr 26, 2017, 10:55 PM GMT-3 (01:55 UTC), 29 km (18 mi) below the surface.

A larger quake followed: M5.9 37 km WSW of Valparaíso, Chile. This one was a foreshock.

Valparaíso 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
3.9 (mwr), minor
Local time
UTC
2017-04-27 01:55:05 UTC
Depth
29.4 km (18.3 mi), shallow
Epicenter
33.117° S, 71.764° W
Region
Chile
Felt reports
3
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

3 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

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
3.9 Mwr
Nodal plane 1
Strike 356°, dip 34°, rake 94°
Nodal plane 2
Strike 172°, dip 56°, rake 88°

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 3.9 km horizontally, 3.2 km in depth
Magnitude uncertainty
±0.05
Depth from
From location
Station coverage gap
165°
Stations used
46

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 50 in the 60 days after this one and 105 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us10008l75. Read Wed, Sep 30, 2026, 1:45 PM UTC.