M4.4 earthquake 46 km WSW of Valparaíso, Chile
A magnitude 4.4 earthquake struck 46 km WSW of Valparaíso, Chile on Mon, Oct 21, 1985, 10:12 AM GMT-3 (13:12 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M4.8 16 km NW of Valparaíso, 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
- 1985-10-21 13:12:32 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 33.135° S, 72.112° 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: 4 in the 60 days after this one and 6 in the 30 days before it.
After
- 4.671 km WSW of Valparaíso, Chile · 14922 days ago · 33 km deep · 26 km away
- 4.174 km W of Valparaíso, Chile · 14906 days ago · 22 km deep · 28 km away
- 4.816 km NW of Valparaíso, Chile · 14900 days ago · 82 km deep · 43 km away
- 4.456 km WNW of Valparaíso, Chile · 14896 days ago · 33 km deep · 28 km away
Before
- 4.449 km WNW of Cartagena, Chile · 14958 days ago · 33 km deep · 33 km away
- 3.560 km WSW of San Antonio, Chile · 14961 days ago · 33 km deep · 73 km away
- 4.352 km WSW of San Antonio, Chile · 14961 days ago · 33 km deep · 77 km away
- 3.456 km WSW of San Antonio, Chile · 14961 days ago · 33 km deep · 82 km away
- 4.553 km SW of San Antonio, Chile · 14961 days ago · 33 km deep · 88 km away
- 5.73 km SSE of San Antonio, Chile · 14977 days ago · 47 km deep · 72 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002m03. Read Mon, Sep 28, 2026, 1:55 AM UTC.