33 km ESE of Ambunti, Papua New Guinea

3 hours ago

USGS

A magnitude 5.4 earthquake struck 33 km ESE of Ambunti, Papua New Guinea on 25 Oct 2026, 10:30 UTC. The hypocentre was 72.3 km below the surface — intermediate by seismological convention. No felt reports have been received so far. The figures have been revised 2 times since the first report.

Depth: 72.3 km
Latitude: 4.36°S
Time: 10:30 UTC
Magnitude: M5.4

EPICENTRE

View the official report↗

MAGNITUDE 5.4

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

The scale is logarithmic: this released about 130 times the energy of a magnitude 4.0, roughly the energy of 2 thousand tonnes of TNT.

72.3 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.