Peru earthquakes

M7.6 earthquake 77 km WSW of Callao, Peru

A magnitude 7.6 earthquake struck 77 km WSW of Callao, Peru on Thu, Oct 3, 1974, 9:21 AM GMT-5 (14:21 UTC), 13 km (8 mi) below the surface.

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Map

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

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The earthquake

Magnitude: 7.6 (ms), major
Local time: Thu, Oct 3, 1974, 9:21 AM GMT-5
UTC: 1974-10-03 14:21:29 UTC
Depth: 13.0 km (8.1 mi), shallow
Epicenter: 12.265° S, 77.795° W
Region: Peru
Strongest shaking: VII, very strong shaking
Tsunami flag: No
Status: Reviewed by a seismologist

Shaking

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

Strongest estimated: VII, very strong shaking
Peak ground acceleration: 21.7% of gravity
Peak ground velocity: 3.2 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.

Stations used: 165

Nearest places

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

Callao, PeruPopulation 1,226,200. Forecast76 kmWSW

Nearby

Within 100 km, magnitude 2.5 and up: 19 in the 60 days after this one and 1 in the 30 days before it.

After

Before

5.064 km SW of Callao, PeruFri, Sep 27, 11:09 AM GMT-5 · 18988 days ago · 41 km deep · 30 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0000888 (also filed as atlas19741003142134, iscgem736021). Read Tue, Sep 22, 2026, 11:01 AM UTC.