QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem905534
USGS iscgem905534
23 Apr 1933, 08:13
129 km ESE of Yamada, Japan
A magnitude 6.4 mw earthquake at 15 km depth.
Published location
Where is 129 km ESE 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.
39.230000, 143.417000
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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
iscgem905534
Coordinates
39.23, 143.417
Network
iscgem
Significance
624