QQuakeFacts
USGS usp000d0th

24 Jul 2004, 19:54

77 km E of Nago, Japan

A magnitude 5.5 mwb earthquake at 30.8 km depth.

Depth30.8 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated2 May 2022Latest timestamp stored in this record

Published location

Where is 77 km E of Nago, 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.

26.488000, 128.754000

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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
usp000d0th
Coordinates
26.488, 128.754
Network
us
Significance
465