QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usc000kn4n
USGS usc000kn4n
25 Oct 2013, 18:10
off the east coast of Honshu, Japan
A magnitude 7.1 mww earthquake at 35 km depth.
Published location
Where is off the east coast of Honshu, 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.
37.155700, 144.661100
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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
usc000kn4n
Coordinates
37.1557, 144.6611
Network
us
Significance
872