QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000cs8z
USGS usp000cs8z

11 Apr 2004, 19:06

38 km E of Kushiro, Japan

A magnitude 6.1 mwb earthquake at 41.8 km depth.

Depth41.8 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated2 May 2022Latest timestamp stored in this record

Published location

Where is 38 km E 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.

42.918000, 144.836000

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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 6.1

Hokkaido, Japan region

M 6.1

78 km SSE of Shikotan, Russia

M 6.1

59 km N of Shikotan, Russia

M 6.1

61 km SSW of Shikotan, Russia

M 6.1

17 km W of Kushiro, Japan

M 6.1

37 km E of Shikotan, Russia

Catalog fields and provenance
Event ID
usp000cs8z
Coordinates
42.918, 144.836
Network
us
Significance
572