14 km WNW of Naze, Japan

49 days ago

USGS

A magnitude 5.1 earthquake struck 14 km WNW of Naze, Japan on 20 Sept 2026, 07:28 UTC. The hypocentre was 68.8 km below the surface — shallow by seismological convention. No felt reports have been received so far. The figures have been revised 1 time since the first report.

Depth: 68.8 km
Latitude: 28.39°N
Time: 07:28 UTC
Magnitude: M5.1

EPICENTRE

View the official report↗

MAGNITUDE 5.1

Can damage poorly constructed buildings; well-built structures usually escape with little harm.

The scale is logarithmic: this released about 45 times the energy of a magnitude 4.0, roughly the energy of 674 tonnes of TNT.

68.8 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.