QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000gwet
USGS usp000gwet

21 Apr 2009, 10:57

near the east coast of Honshu, Japan

A magnitude 5.3 mwc earthquake at 43.2 km depth.

Depth43.2 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated15 July 2022Latest timestamp stored in this record

Published location

Where is near the east coast of Honshu, 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.

37.365000, 141.399000

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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 5.3

72 km SE of Shimoda, Japan

M 5.3

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M 5.3

61 km SSE of Shimoda, Japan

M 5.3

75 km SSE of Shimoda, Japan

M 5.3

53 km SSE of Shimoda, Japan

M 5.3

53 km SSE of Shimoda, Japan

Catalog fields and provenance
Event ID
usp000gwet
Coordinates
37.365, 141.399
Network
us
Significance
437