54 km ENE of Sainte-Marie, Martinique

49 days ago

USGS

A magnitude 4.5 earthquake struck 54 km ENE of Sainte-Marie, Martinique on 20 Sept 2026, 02:44 UTC. The hypocentre was 46.4 km below the surface — shallow by seismological convention. The figures have been revised 2 times since the first report.

Depth: 46.4 km
Latitude: 15.04°N
Time: 02:44 UTC
Magnitude: M4.5

EPICENTRE

View the official report↗

MAGNITUDE 4.5

Noticeable shaking of indoor objects. Damage is unlikely.

The scale is logarithmic: this released about 180 times the energy of a magnitude 3.0, roughly the energy of 85 tonnes of TNT.

46.4 KM DEEP

Shallow earthquakes release their energy close to the surface, so they are felt more strongly, and do more damage, than deeper earthquakes of the same magnitude.