Chile earthquakes

M4.1 earthquake 34 km WNW of Valparaíso, Chile

A magnitude 4.1 earthquake struck 34 km WNW of Valparaíso, Chile on Sun, Apr 23, 2017, 1:12 PM GMT-3 (16:12 UTC), 21 km (13 mi) below the surface.

A larger quake followed: M6.9 40 km W 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
4.1 (Mwr, regional moment), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2017-04-23 16:12:53 UTC
Depth
21.3 km (13.2 mi), shallow
Epicenter
32.963° S, 71.986° W
Region
Chile
Felt reports
2
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

2 people reported to the USGS what they felt; the strongest reported shaking was IV, light 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
Oblique reverse
Moment magnitude
4.1 Mwr
Nodal plane 1
Strike 35°, dip 20°, rake 124°
Nodal plane 2
Strike 180°, dip 73°, rake 79°

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 4.8 km horizontally, 2.2 km in depth
Magnitude uncertainty
±0.04
Depth from
From location
Station coverage gap
69°
Stations used
66

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 144 in the 60 days after this one and 13 in the 30 days before it.

After

The first 60 of 144.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us10008k1k. Read Sat, Oct 3, 2026, 5:39 AM UTC.