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4.2MAG

LIGHT EARTHQUAKE

Bonin Islands, Japan region

USGS

A magnitude 4.2 earthquake struck Bonin Islands, Japan region on 25 Oct 2026, 02:47 UTC. The hypocentre was 499.8 km below the surface — deep by seismological convention. 2 other earthquakes above our reporting threshold have been recorded within 250 km in the past 30 days.

Depth
499.8 km

deep

Latitude
27.88°N

139.73°E longitude

Time
02:47 UTC

25 Oct 2026

Magnitude
M4.2

mb

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.

499.8 KM DEEP

Deep earthquakes rarely cause damage. The energy dissipates over hundreds of kilometres before reaching the surface, though it can still be felt far from the epicentre.

NEARBY IN THE PAST 30 DAYS

2 earthquakes above our reporting threshold within 250 km of this one, the largest a magnitude 6.5.

OTHER RECENT EARTHQUAKES

M4.2 earthquake — Bonin Islands, Japan region · Quakewire