QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem826814
USGS iscgem826814
28 Feb 1968, 13:08
189 km S of ?yama, Japan
A magnitude 6.3 mw earthquake at 344.1 km depth.
Published location
Where is 189 km S of ?yama, 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.
32.928000, 137.820000
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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
iscgem826814
Coordinates
32.928, 137.82
Network
iscgem
Significance
603