QuakeIndex

Earthquake · reviewed by a seismologist

M 7.0Mi

Bonin Islands, Japan region

Yes. A magnitude 7.0 earthquake was recorded in the Bonin Islands, Japan region at 02:09 UTC on 2026-10-24, 473 km deep.

· 473 km deep · released about 480 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
Magnitude
M 7.0 (Mi)
Depth
473 km below the surface
Felt
no reports yet
Status
Reviewed by a seismologist

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

This was a major earthquake. Serious damage is likely near the epicentre. Follow official information from USGS and local authorities.

At this magnitude and depth, people at rest would likely notice it out to about 343 km (213 mi) from the epicentre. 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 480 kilotons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 8.0 would have released about 32 times as much.

  1. Tōhoku, Japan 2011 M 9.1 1,400× the energy of this one
  2. San Francisco 1906 M 7.9 22× the energy of this one
  3. Ridgecrest, California 2019 M 7.1 1.4× the energy of this one
  4. This earthquake M 7.0 about 480 kilotons of TNT
  5. Loma Prieta, California 1989 M 6.9 this one released 1.4× more
  6. Northridge, California 1994 M 6.7 this one released 2.8× 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.

Where

Epicentre 28.0000, 139.9000. Map © OpenStreetMap contributors.

Aftershocks so far

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

  1. 4.2 Bonin Islands, Japan region
  2. 4.8 Bonin Islands, Japan region
  3. 6.5 Bonin Islands, Japan region

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

On USGS

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