Bonin Islands, Japan region

Yes. A magnitude 6.5 earthquake was recorded in the Bonin Islands, Japan region at 02:09 UTC on 2026-10-25, 492 km deep. No felt reports to USGS yet.

2026-10-25 02:09 UTC · 492 km deep · released about 85 kilotons of TNT

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Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.

When: 2026-10-25 02:09 UTC
Magnitude: M 6.5 (mww)
Depth: 492 km below the surface
Felt: no reports yet
USGS impact alert: green
Tsunami: USGS flagged this event for tsunami evaluation. Follow tsunami.gov for official messages.
Status: Reviewed by a seismologist

USGS · last changed by USGS 1 hour ago · we first saw it 2 hours ago

This was a strong earthquake. Damage is likely near the epicentre and it is felt over a wide area.

At this magnitude and depth it was probably too small to be felt, even directly above it. Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

How big was it?

This earthquake released about 85 kilotons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 7.5 would have released about 32 times as much.

Ridgecrest, California 2019 M 7.1 7.9× the energy of this one
Loma Prieta, California 1989 M 6.9 4× the energy of this one
Northridge, California 1994 M 6.7 2× the energy of this one
This earthquake M 6.5 about 85 kilotons of TNT
Mineral, Virginia 2011 M 5.8 this one released 11× more
Magna, Utah 2020 M 5.7 this one released 16× more

Energy from the Gutenberg–Richter relation (log₁₀E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

For this area

The largest earthquake within 50 km in our catalogue was M 7.0 on 2026-10-24 — about 5.6 times the energy of this one.

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Map loads when it scrolls into view

Epicentre 27.7953, 139.6184. Map © OpenStreetMap contributors.

Aftershocks so far

2 earthquakes have been recorded within 50 km since this one.

4.2 Bonin Islands, Japan region 02:47 UTC
4.8 Bonin Islands, Japan region 02:36 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 04:06 UTC. QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

Revisions

USGS refines a solution as more stations report. Every change we have seen is listed here.

What changed	From	To	When
impact alert	not reported	green	02:31 UTC
measured intensity	not reported	0	02:29 UTC

On USGS

The official USGS event page — the source of record for every value above
Did you feel it? Report it to USGS — reports go to USGS, not to us
ShakeMap for this event, when USGS has produced one

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.