QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/us1000hg5i
USGS us1000hg5i
23 Oct 2018, 17:04
61 km SSW of Yonakuni, Japan
A magnitude 5.7 mww earthquake at 31 km depth.
Published location
Where is 61 km SSW of Yonakuni, 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.
23.991200, 122.679100
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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
us1000hg5i
Coordinates
23.9912, 122.6791
Network
us
Significance
510