QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem872938
USGS iscgem872938
17 Aug 1963, 12:12
27 km SSE of Nishinoomote, Japan
A magnitude 6.4 mw earthquake at 35 km depth.
Published location
Where is 27 km SSE of Nishinoomote, 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.
30.520000, 131.148000
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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
iscgem872938
Coordinates
30.52, 131.148
Network
iscgem
Significance
630