QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem820585
USGS iscgem820585
17 Jun 1968, 19:57
182 km ESE of Kamaishi, Japan
A magnitude 6.4 mw earthquake at 24.8 km depth.
Published location
Where is 182 km ESE of Kamaishi, 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.
38.701000, 143.843000
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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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Nearby events with a similar magnitude
Catalog fields and provenance
Event ID
iscgem820585
Coordinates
38.701, 143.843
Network
iscgem
Significance
630