QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem897608
USGS iscgem897608
26 Oct 1948, 20:52
46 km ESE of Nishinoomote, Japan
A magnitude 6 mw earthquake at 20 km depth.
Published location
Where is 46 km ESE 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.
30.565000, 131.445000
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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
iscgem897608
Coordinates
30.565, 131.445
Network
iscgem
Significance
559