QQuakeFacts
USGS usp000j12q

6 May 2011, 00:21

57 km ESE of Katsuren-haebaru, Japan

A magnitude 5.5 mww earthquake at 10 km depth.

Depth10 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated22 December 2025Latest timestamp stored in this record

Published location

Where is 57 km ESE of Katsuren-haebaru, 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.

26.124000, 128.398000

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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
usp000j12q
Coordinates
26.124, 128.398
Network
us
Significance
480