QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem785105
USGS iscgem785105
29 May 1971, 09:52
20 km SE of Kushima, Japan
A magnitude 6 mw earthquake at 49 km depth.
Published location
Where is 20 km SE of Kushima, 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.
31.352000, 131.391000
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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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Nearby events with a similar magnitude
Catalog fields and provenance
Event ID
iscgem785105
Coordinates
31.352, 131.391
Network
iscgem
Significance
561