QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem897316
USGS iscgem897316
9 May 1948, 03:09
28 km ENE of Nichinan, Japan
A magnitude 6.9 mw earthquake at 25 km depth.
Published location
Where is 28 km ENE of Nichinan, 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.
31.656000, 131.658000
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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
iscgem897316
Coordinates
31.656, 131.658
Network
iscgem
Significance
737