QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp0001vzg
USGS usp0001vzg
9 Jun 1983, 13:49
85 km W of Noshiro, Japan
A magnitude 6 mw earthquake at 30.6 km depth.
Published location
Where is 85 km W of Noshiro, 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.
40.237000, 139.023000
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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
usp0001vzg
Coordinates
40.237, 139.023
Network
us
Significance
554