QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem794013
USGS iscgem794013
25 Jul 1970, 23:41
21 km SE of Tsunō, Japan
A magnitude 7 mw earthquake at 42.7 km depth.
Published location
Where is 21 km SE of Tsunō, 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.
32.138000, 131.751000
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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
iscgem794013
Coordinates
32.138, 131.751
Network
iscgem
Significance
754