QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem881876
USGS iscgem881876
26 Apr 1959, 21:40
54 km NW of Yonakuni, Japan
A magnitude 6.9 mw earthquake at 118 km depth.
Published location
Where is 54 km NW of Yonakuni, 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.
24.802000, 122.600000
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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
iscgem881876
Coordinates
24.802, 122.6
Network
iscgem
Significance
732