M4.2 earthquake 55 km W of Valparaíso, Chile
A magnitude 4.2 earthquake struck 55 km W of Valparaíso, Chile on Sun, Oct 21, 2018, 10:11 AM GMT-3 (13:11 UTC), 9 km (5 mi) below the surface.
A larger quake followed: M5.5 81 km WSW of San Antonio, Chile. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.2 (mb), light
- Local time
- UTC
- 2018-10-21 13:11:07 UTC
- Depth
- 8.5 km (5.3 mi), shallow
- Epicenter
- 33.071° S, 72.226° 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.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 4.8 km horizontally, 9.9 km in depth
- Magnitude uncertainty
- ±0.30
- Depth from
- From location
- Station coverage gap
- 180°
- Stations used
- 28
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.121 km NW of Hacienda La Calera, Chile · 2900 days ago · 40 km deep · 95 km away · felt by 1
- 4.560 km W of San Antonio, Chile · 2863 days ago · 10 km deep · 68 km away
- 5.581 km WSW of San Antonio, Chile · 2860 days ago · 10 km deep · 96 km away · felt by 17
- 4.781 km WSW of San Antonio, Chile · 2860 days ago · 19 km deep · 98 km away · felt by 1
- 5.07 km SSW of San Antonio, Chile · 2856 days ago · 35 km deep · 85 km away · felt by 139
Before
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000hf94. Read Wed, Sep 30, 2026, 12:35 PM UTC.