3 km S of Francisco I. Madero, Mexico

78 days ago

USGS

A magnitude 4.2 earthquake struck 3 km S of Francisco I. Madero, Mexico on 22 Aug 2026, 00:36 UTC. The hypocentre was 157.9 km below the surface — intermediate by seismological convention. 4 other earthquakes above our reporting threshold have been recorded within 250 km in the past 30 days.

Depth: 157.9 km
Latitude: 16.78°N
Time: 00:36 UTC
Magnitude: M4.2

EPICENTRE

View the official report↗

MAGNITUDE 4.2

Noticeable shaking of indoor objects. Damage is unlikely.

The scale is logarithmic: this released about 63 times the energy of a magnitude 3.0, roughly the energy of 30 tonnes of TNT.

157.9 KM DEEP

At this depth the energy spreads before it reaches the surface. Shaking is usually weaker than a shallow earthquake of the same size, but it can be felt across a wider area.