QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000cet5
USGS usp000cet5

8 Dec 2003, 07:20

Hokkaido, Japan region

A magnitude 5.1 mwc earthquake at 66.4 km depth.

Depth66.4 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated19 December 2025Latest timestamp stored in this record

Published location

Where is Hokkaido, Japan region?

This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.

41.160000, 141.957000

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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 5.1

eastern Honshu, Japan

M 5.1

near the east coast of Honshu, Japan

M 5.1

68 km E of Ishinomaki, Japan

M 5.1

72 km ENE of Mutsu, Japan

M 5.1

33 km SE of ?funato, Japan

M 5.1

4 km S of Kogota, Japan

Catalog fields and provenance
Event ID
usp000cet5
Coordinates
41.16, 141.957
Network
us
Significance
400