QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem894815
USGS iscgem894815
18 Oct 1951, 09:26
66 km E of Mutsu, Japan
A magnitude 6.4 mw earthquake at 65 km depth.
Published location
Where is 66 km E of Mutsu, 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.
41.325000, 142.011000
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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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Catalog fields and provenance
Event ID
iscgem894815
Coordinates
41.325, 142.011
Network
iscgem
Significance
630