Argentina earthquakes

M4.9 earthquake 66 km ENE of Caucete, Argentina

A magnitude 4.9 earthquake struck 66 km ENE of Caucete, Argentina on Tue, Dec 6, 1977, 9:41 AM GMT-3 (12:41 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.9 63 km SSW of San Agustín de Valle Fértil, Argentina. This one was a foreshock.

Caucete forecast More in Argentina

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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude: 4.9 (mb), light
Local time: Tue, Dec 6, 1977, 9:41 AM GMT-3
UTC: 1977-12-06 12:41:16 UTC
Depth: 33.0 km (20.5 mi), shallow
Epicenter: 31.374° S, 67.663° W
Region: Argentina
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
Stations used: 17

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.9 and up: 20 in the 60 days after this one and 82 in the 30 days before it.

After

Before

Earthquakes today Argentina earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0000rye (also filed as iscgem688745). Read Wed, Sep 30, 2026, 6:11 PM UTC.