QQuakeFacts
USGS usb000jw8u

19 Sept 2013, 18:25

8 km WNW of Iwaki, Japan

A magnitude 5.4 mwb earthquake at 8 km depth.

Depth8 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated6 August 2022Latest timestamp stored in this record

Published location

Where is 8 km WNW of Iwaki, 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.

37.067400, 140.787900

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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
usb000jw8u
Coordinates
37.0674, 140.7879
Network
us
Significance
495