Chile earthquakes

M5.2 earthquake 61 km WSW of San Antonio, Chile

A magnitude 5.2 earthquake struck 61 km WSW of San Antonio, Chile on Tue, Aug 20, 1985, 8:21 AM GMT-4 (12:21 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.

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The earthquake

Magnitude: 5.2 (mw), moderate
Local time: Tue, Aug 20, 1985, 8:21 AM GMT-4
UTC: 1985-08-20 12:21:05 UTC
Depth: 33.0 km (20.5 mi), shallow
Epicenter: 33.775° S, 72.231° 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 2.2 and up: 16 in the 60 days after this one and 5 in the 30 days before it.

After

Before

Earthquakes today Chile earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0002hyb (also filed as gcmtb082085b, gcmt19850820122105, iscgem518505). Read Tue, Sep 22, 2026, 10:23 PM UTC.