M4.4 earthquake 42 km W of Valparaíso, Chile
A magnitude 4.4 earthquake struck 42 km W of Valparaíso, Chile on Thu, Aug 8, 1985, 2:06 AM GMT-4 (06:06 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.7 3 km SSE 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
- 4.4 (mb), light
- Local time
- UTC
- 1985-08-08 06:06:41 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 33.109° S, 72.073° 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.
- Depth from
- OPERATOR_ASSIGNED
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 10 in the 60 days after this one and 11 in the 30 days before it.
After
- 4.434 km WNW of Cartagena, Chile · 15022 days ago · 33 km deep · 37 km away
- 4.280 km WNW of Cartagena, Chile · 15019 days ago · 33 km deep · 45 km away
- 5.261 km WSW of San Antonio, Chile · 15015 days ago · 33 km deep · 75 km away
- 4.881 km WNW of Cartagena, Chile · 15012 days ago · 33 km deep · 46 km away
- 4.647 km WNW of Cartagena, Chile · 15011 days ago · 33 km deep · 38 km away
- 4.274 km WSW of Valparaíso, Chile · 15010 days ago · 33 km deep · 33 km away
- 4.484 km W of San Antonio, Chile · 14992 days ago · 33 km deep · 70 km away
- 3.289 km WSW of Valparaíso, Chile · 14992 days ago · 33 km deep · 48 km away
- 3.941 km WNW of Cartagena, Chile · 14984 days ago · 33 km deep · 30 km away
- 5.73 km SSE of San Antonio, Chile · 14979 days ago · 47 km deep · 72 km away
Before
- 4.539 km W of Valparaíso, Chile · 15028 days ago · 33 km deep · 4 km away
- 4.698 km W of Cartagena, Chile · 15047 days ago · 33 km deep · 66 km away
- 5.129 km W of Valparaíso, Chile · 15049 days ago · 33 km deep · 13 km away
- 5.531 km NNW of Valparaíso, Chile · 15049 days ago · 33 km deep · 51 km away
- 4.537 km NW of Valparaíso, Chile · 15049 days ago · 33 km deep · 34 km away
- 4.979 km WSW of Valparaíso, Chile · 15052 days ago · 33 km deep · 38 km away
- 4.570 km W of Cartagena, Chile · 15054 days ago · 33 km deep · 55 km away
- 3.574 km W of Valparaíso, Chile · 15055 days ago · 33 km deep · 34 km away
- 5.545 km W of Valparaíso, Chile · 15055 days ago · 29 km deep · 15 km away
- 4.837 km WNW of Valparaíso, Chile · 15058 days ago · 45 km deep · 28 km away
- 4.454 km WNW of Valparaíso, Chile · 15058 days ago · 33 km deep · 23 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002hgf. Read Tue, Sep 29, 2026, 9:53 PM UTC.