QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem897116
USGS iscgem897116
25 Dec 1949, 23:17
3 km ENE of Imaichi, Japan
A magnitude 6.3 mw earthquake at 10 km depth.
Published location
Where is 3 km ENE of Imaichi, 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.
36.731000, 139.722000
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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
iscgem897116
Coordinates
36.731, 139.722
Network
iscgem
Significance
609