QQuakeFacts
USGS usp000hws4

13 Mar 2011, 04:36

52 km E of ?hara, Japan

A magnitude 5.1 mwc earthquake at 22.4 km depth.

Depth22.4 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated8 April 2022Latest timestamp stored in this record

Published location

Where is 52 km E of ?hara, 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.

35.208000, 140.973000

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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
usp000hws4
Coordinates
35.208, 140.973
Network
us
Significance
400