QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem892939
USGS iscgem892939
23 May 1952, 00:08
79 km SE of Koshima, Japan
A magnitude 6.2 mw earthquake at 30.2 km depth.
Published location
Where is 79 km SE of Koshima, 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.
29.814000, 131.208000
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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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Use local emergency authorities and the live USGS event page. This historical evidence page is not an alert service.
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Catalog fields and provenance
Event ID
iscgem892939
Coordinates
29.814, 131.208
Network
iscgem
Significance
595