M4.4 earthquake 47 km W of Valparaíso, Chile
A magnitude 4.4 earthquake struck 47 km W of Valparaíso, Chile on Fri, Aug 24, 2018, 11:20 PM GMT-3 (02:20 UTC), 18 km (11 mi) below the surface.
A larger quake followed: M4.5 36 km WSW 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
- 4.4 (Mwr, regional moment), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2018-08-25 02:20:37 UTC
- Depth
- 18.2 km (11.3 mi), shallow
- Epicenter
- 33.093° S, 72.139° 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 V, moderate shaking.
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
- 4.4 Mwr
- Nodal plane 1
- Strike 33°, dip 27°, rake 127°
- Nodal plane 2
- Strike 173°, dip 68°, rake 73°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 3.0 km horizontally, 4.0 km in depth
- Magnitude uncertainty
- ±0.03
- Depth from
- From location
- Station coverage gap
- 70°
- Stations used
- 83
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
- 4.536 km WSW of La Ligua, Chile · 2940 days ago · 32 km deep · 79 km away · felt by 6
- 4.137 km WSW of La Ligua, Chile · 2940 days ago · 21 km deep · 77 km away
- 4.054 km W of La Ligua, Chile · 2925 days ago · 21 km deep · 71 km away · felt by 1
- 4.4115 km WNW of Valparaíso, Chile · 2908 days ago · 32 km deep · 83 km away · felt by 1
- 4.255 km W of Valparaíso, Chile · 2903 days ago · 9 km deep · 8 km away
- 4.121 km NW of Hacienda La Calera, Chile · 2903 days ago · 40 km deep · 89 km away · felt by 1
Before
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000gh4r. Read Fri, Oct 2, 2026, 4:26 PM UTC.