QQuakeFacts
USGS usp000erwt

27 Aug 2006, 18:11

54 km N of Yonakuni, Japan

A magnitude 5.4 mwb earthquake at 146 km depth.

Depth146 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated22 December 2025Latest timestamp stored in this record

Published location

Where is 54 km N of Yonakuni, Japan?

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

24.953000, 122.936000

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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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Catalog fields and provenance
Event ID
usp000erwt
Coordinates
24.953, 122.936
Network
us
Significance
449