Mexico earthquakes

M7.6 earthquake 16 km SSW of Cuyutlán, Mexico

A magnitude 7.6 earthquake struck 16 km SSW of Cuyutlán, Mexico on Tue, Jan 21, 2003, 8:06 PM CST (02:06 UTC), 24 km (15 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 (mwb), major
Local time: Tue, Jan 21, 2003, 8:06 PM CST
UTC: 2003-01-22 02:06:34 UTC
Depth: 24.0 km (14.9 mi), shallow
Epicenter: 18.770° N, 104.104° W
Region: Mexico
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: 27.5% of gravity
Peak ground velocity: 3.4 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.

Fault motion and ground failure

How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.

Faulting: Reverse (thrust)
Moment magnitude: 7.4 Mww
Nodal plane 1: Strike 292°, dip 20°, rake 78°
Nodal plane 2: Strike 124°, dip 69°, rake 94°
Landslide alert: Orange
Liquefaction alert: Orange

How well it is located

Reviewed by a seismologist.

Depth from: OPERATOR_ASSIGNED
Stations used: 551

Nearest places

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

Nearby

Within 100 km, magnitude 2.5 and up: 52 in the 60 days after this one and 0 in the 30 days before it.

After

Earthquakes today Mexico earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp000bnyr (also filed as choy20030122020634, gcmtc012203a, duputel012203a, gcmt20030122020634, atlas20030122020636, iscgem6541364). Read Tue, Sep 22, 2026, 3:11 PM UTC.