QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000cq9g
USGS usp000cq9g

18 Mar 2004, 19:25

101 km SSW of Kushiro, Japan

A magnitude 5 mwc earthquake at 48.8 km depth.

Depth48.8 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated10 November 2016Latest timestamp stored in this record

Published location

Where is 101 km SSW of Kushiro, 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.

42.139000, 143.882000

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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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Nearby events with a similar magnitude

M 5

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138 km SE of Ishinomaki, Japan

M 5

141 km ENE of Hachinohe, Japan

M 5

73 km SSE of Obihiro, Japan

Catalog fields and provenance
Event ID
usp000cq9g
Coordinates
42.139, 143.882
Network
us
Significance
385