QQuakeFacts
USGS usc000fd76

25 Feb 2013, 16:00

164 km SE of Koshima, Japan

A magnitude 5.4 mwc earthquake at 45.5 km depth.

Depth45.5 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated22 December 2025Latest timestamp stored in this record

Published location

Where is 164 km SE of Koshima, 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.

29.011000, 131.505000

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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
usc000fd76
Coordinates
29.011, 131.505
Network
us
Significance
449