M3.7 earthquake 40 km NW of Valparaíso, Chile
A magnitude 3.7 earthquake struck 40 km NW of Valparaíso, Chile on Fri, May 11, 2018, 8:29 PM GMT-3 (23:29 UTC), 23 km (15 mi) below the surface.
A larger quake followed: M4.7 38 km NW of La Ligua, Chile. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.7 (mwr), minor
- Local time
- UTC
- 2018-05-11 23:29:14 UTC
- Depth
- 23.5 km (14.6 mi), shallow
- Epicenter
- 32.753° S, 71.904° 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
- 3.7 Mwr
- Nodal plane 1
- Strike 16°, dip 40°, rake 93°
- Nodal plane 2
- Strike 192°, dip 50°, rake 87°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 1.9 km horizontally, 6.3 km in depth
- Magnitude uncertainty
- ±0.04
- Depth from
- From location
- Station coverage gap
- 185°, poorly surrounded by stations
- Stations used
- 41
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.738 km NW of La Ligua, Chile · 3056 days ago · 32 km deep · 75 km away · felt by 110
- 4.363 km NNW of Valparaíso, Chile · 3033 days ago · 20 km deep · 26 km away
- 4.366 km WSW of Illapel, Chile · 3020 days ago · 67 km deep · 96 km away · felt by 1
- 4.670 km WNW of La Ligua, Chile · 3018 days ago · 24 km deep · 67 km away · felt by 5
Before
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000e6kv. Read Wed, Sep 30, 2026, 7:32 AM UTC.