QQuakeFacts
USGS usp000hy93

22 Mar 2011, 12:56

268 km E of Namie, Japan

A magnitude 5.1 mwc earthquake at 22.2 km depth.

Depth22.2 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated22 December 2025Latest timestamp stored in this record

Published location

Where is 268 km E of Namie, 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.

37.065000, 143.982000

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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
usp000hy93
Coordinates
37.065, 143.982
Network
us
Significance
400