QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem898109
USGS iscgem898109
4 Nov 1947, 00:09
72 km W of Rumoi, Japan
A magnitude 7.1 mw earthquake at 15 km depth.
Published location
Where is 72 km W of Rumoi, 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.
43.986000, 140.738000
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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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Catalog fields and provenance
Event ID
iscgem898109
Coordinates
43.986, 140.738
Network
iscgem
Significance
776