QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp0003bab
USGS usp0003bab

15 Dec 1987, 14:57

Volcano Islands, Japan region

A magnitude 6 mw earthquake at 39.3 km depth.

Depth39.3 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated27 April 2022Latest timestamp stored in this record

Published location

Where is Volcano Islands, Japan region?

This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.

23.430000, 142.908000

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Map data © OpenStreetMap contributors

What the numbers mean

Magnitude measures event size; depth locates the source below the surface. Neither value alone establishes local damage or personal risk.

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Continue exploring

Nearby events with a similar magnitude

M 6

Bonin Islands, Japan region

M 6.03

Volcano Islands, Japan region

M 6.04

Volcano Islands, Japan region

M 6.06

Bonin Islands, Japan region

M 5.9

Bonin Islands, Japan region

M 6.17

Bonin Islands, Japan region

Catalog fields and provenance
Event ID
usp0003bab
Coordinates
23.43, 142.908
Network
us
Significance
554