Chile earthquakes

M4.2 earthquake 46 km N of Valparaíso, Chile

A magnitude 4.2 earthquake struck 46 km N of Valparaíso, Chile on Mon, Mar 19, 2018, 6:03 AM GMT-3 (09:03 UTC), 29 km (18 mi) below the surface.

A larger quake followed: M4.5 43 km NW of Valparaíso, Chile. This one was a foreshock.

Quintero 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
4.2 (mwr), light
Local time
UTC
2018-03-19 09:03:57 UTC
Depth
29.3 km (18.2 mi), shallow
Epicenter
32.624° S, 71.723° W
Region
Chile
Felt reports
24
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

24 people reported to the USGS what they felt; the strongest reported shaking was VI, strong 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
4.2 Mwr
Nodal plane 1
Strike 16°, dip 23°, rake 109°
Nodal plane 2
Strike 175°, dip 68°, rake 82°

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 3.7 km horizontally, 3.8 km in depth
Magnitude uncertainty
±0.03
Depth from
From location
Station coverage gap
146°
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: 6 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 4.210 km WNW of Hacienda La Calera, Chile · 3114 days ago · 45 km deep · 40 km away · felt by 32
  2. 4.450 km WSW of Illapel, Chile · 3090 days ago · 40 km deep · 97 km away · felt by 2
  3. 4.210 km ENE of Hacienda La Calera, Chile · 3085 days ago · 56 km deep · 58 km away · felt by 3
  4. 3.319 km NNW of Lampa, Chile · 3076 days ago · 75 km deep · 89 km away · felt by 1
  5. 4.543 km NW of Valparaíso, Chile · 3062 days ago · 19 km deep · 26 km away · felt by 77
  6. 3.740 km NW of Valparaíso, Chile · 3062 days ago · 23 km deep · 22 km away

Before

  1. 3.861 km WNW of La Ligua, Chile · 3125 days ago · 29 km deep · 53 km away · felt by 3
  2. 4.493 km WSW of Illapel, Chile · 3126 days ago · 40 km deep · 94 km away · felt by 21
  3. 4.453 km W of Valparaíso, Chile · 3140 days ago · 11 km deep · 68 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000d6c7. Read Tue, Sep 29, 2026, 8:53 AM UTC.