QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem804274
USGS iscgem804274
9 Sept 1969, 06:15
13 km W of Gero, Japan
A magnitude 6.3 mw earthquake at 10 km depth.
Published location
Where is 13 km W of Gero, 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.
35.809000, 137.084000
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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
iscgem804274
Coordinates
35.809, 137.084
Network
iscgem
Significance
611