QQuakeFacts
USGS usp000hyba

22 Mar 2011, 23:46

49 km E of ?hara, Japan

A magnitude 5 mwc earthquake at 35 km depth.

Depth35 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated22 December 2025Latest timestamp stored in this record

Published location

Where is 49 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.

35.239000, 140.933000

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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
usp000hyba
Coordinates
35.239, 140.933
Network
us
Significance
385