QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem911526
USGS iscgem911526
1 Sept 1923, 03:58
5 km SSE of ?iso, Japan
A magnitude 8 mw earthquake at 15 km depth.
Published location
Where is 5 km SSE of ?iso, 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.
35.274000, 139.344000
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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
iscgem911526
Coordinates
35.274, 139.344
Network
iscgem
Significance
975