QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem810045
USGS iscgem810045
21 Apr 1969, 08:19
37 km ESE of Tsunō, Japan
A magnitude 7.1 mw earthquake at 37 km depth.
Published location
Where is 37 km ESE 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.
32.141000, 131.942000
Open the interactive map ↗Map data © OpenStreetMap contributors
What the numbers mean
Magnitude measures event size; depth locates the source below the surface. Neither value alone establishes local damage or personal risk.
Need a current safety answer?
Use local emergency authorities and the live USGS event page. This historical evidence page is not an alert service.
Continue exploring
Nearby events with a similar magnitude
Catalog fields and provenance
Event ID
iscgem810045
Coordinates
32.141, 131.942
Network
iscgem
Significance
769