QQuakeFacts
USGS usp000j0dw

22 Apr 2011, 17:27

280 km E of Namie, Japan

A magnitude 5 mwc earthquake at 37.8 km depth.

Depth37.8 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated22 December 2025Latest timestamp stored in this record

Published location

Where is 280 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.

37.083000, 144.124000

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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
usp000j0dw
Coordinates
37.083, 144.124
Network
us
Significance
385