QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000crxa
USGS usp000crxa

7 Apr 2004, 14:47

91 km SSE of Tateyama, Japan

A magnitude 5.1 mwc earthquake at 50.4 km depth.

Depth50.4 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated19 December 2025Latest timestamp stored in this record

Published location

Where is 91 km SSE of Tateyama, 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.

34.248000, 140.314000

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Map data © OpenStreetMap contributors

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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M 5.1

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M 5.1

71 km SSE of Shimoda, Japan

Catalog fields and provenance
Event ID
usp000crxa
Coordinates
34.248, 140.314
Network
us
Significance
400