QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem858966
USGS iscgem858966
29 Mar 1965, 11:47
121 km ENE of Kuji, Japan
A magnitude 6.4 mw earthquake at 34.1 km depth.
Published location
Where is 121 km ENE of Kuji, 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.
40.739000, 143.011000
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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
iscgem858966
Coordinates
40.739, 143.011
Network
iscgem
Significance
630