QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem893609
USGS iscgem893609
26 Oct 1952, 19:19
103 km E of Yamada, Japan
A magnitude 6.3 mw earthquake at 24.2 km depth.
Published location
Where is 103 km E of Yamada, 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.
39.440000, 143.157000
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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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Catalog fields and provenance
Event ID
iscgem893609
Coordinates
39.44, 143.157
Network
iscgem
Significance
603