M4.2 earthquake 74 km WSW of Valparaíso, Chile
A magnitude 4.2 earthquake struck 74 km WSW of Valparaíso, Chile on Sun, Aug 25, 1985, 9:18 PM GMT-4 (01:18 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
- 4.2 (mb), light
- Local time
- UTC
- 1985-08-26 01:18:06 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 33.258° S, 72.384° 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: 11 in the 60 days after this one and 7 in the 30 days before it.
After
- 4.484 km W of San Antonio, Chile · 14991 days ago · 33 km deep · 41 km away
- 3.289 km WSW of Valparaíso, Chile · 14990 days ago · 33 km deep · 15 km away
- 3.941 km WNW of Cartagena, Chile · 14982 days ago · 33 km deep · 38 km away
- 5.73 km SSE of San Antonio, Chile · 14977 days ago · 47 km deep · 83 km away
- 5.367 km SW of San Antonio, Chile · 14976 days ago · 33 km deep · 91 km away
- 4.553 km SW of San Antonio, Chile · 14961 days ago · 33 km deep · 81 km away
- 3.456 km WSW of San Antonio, Chile · 14961 days ago · 33 km deep · 72 km away
- 4.352 km WSW of San Antonio, Chile · 14961 days ago · 33 km deep · 69 km away
- 3.560 km WSW of San Antonio, Chile · 14961 days ago · 33 km deep · 61 km away
- 4.449 km WNW of Cartagena, Chile · 14959 days ago · 33 km deep · 31 km away
- 4.446 km WSW of Valparaíso, Chile · 14952 days ago · 33 km deep · 29 km away
Before
- 4.647 km WNW of Cartagena, Chile · 15009 days ago · 33 km deep · 33 km away
- 4.881 km WNW of Cartagena, Chile · 15011 days ago · 33 km deep · 14 km away
- 5.261 km WSW of San Antonio, Chile · 15014 days ago · 33 km deep · 59 km away
- 4.280 km WNW of Cartagena, Chile · 15018 days ago · 33 km deep · 13 km away
- 4.434 km WNW of Cartagena, Chile · 15020 days ago · 33 km deep · 45 km away
- 4.442 km W of Valparaíso, Chile · 15026 days ago · 33 km deep · 33 km away
- 4.539 km W of Valparaíso, Chile · 15027 days ago · 33 km deep · 37 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002j5a. Read Mon, Sep 28, 2026, 9:58 AM UTC.