Argentina earthquakes

M6.0 earthquake 65 km ENE of Caucete, Argentina

A magnitude 6.0 earthquake struck 65 km ENE of Caucete, Argentina on Wed, Nov 23, 1977, 10:58 PM GMT-3 (01:58 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M6.3 67 km E of Caucete, Argentina. This one was a foreshock.

Caucete forecast More in Argentina

Map

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

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The earthquake

Magnitude: 6.0 (Ms, surface-wave), strong
Magnitude from: USGS National Earthquake Information Center
Local time: Wed, Nov 23, 1977, 10:58 PM GMT-3
UTC: 1977-11-24 01:58:33 UTC
Depth: 33.0 km (20.5 mi), shallow
Epicenter: 31.471° S, 67.628° W
Region: Argentina
Strongest shaking: VI, strong shaking
Tsunami flag: No
Status: Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.	Scale	Computed by	Notes
6.0	Ms, surface-wave	USGS National Earthquake Information Center	Preferred · Reviewed
5.78	Mw, moment	ISC-GEM global catalog	Final · ±0.49

Shaking

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

Strongest estimated: VI, strong shaking
Peak ground acceleration: 18.5% of gravity
Peak ground velocity: 2.5 cm/s
Map: Automatic

USGS ShakeMap: estimated shaking intensity around the epicenter — Estimated shaking intensity. Map: USGS ShakeMap.

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: 43

Nearest places

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

Nearby

Within 100 km, magnitude 3.0 and up: 78 in the 60 days after this one and 24 in the 30 days before it.

After

The first 60 of 78.

Before

Earthquakes today Argentina earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0000rqa (also filed as atlas19771124015831, iscgem690808). Read Mon, Oct 5, 2026, 5:31 AM UTC.