QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/us200026su
USGS us200026su
15 Apr 2015, 20:55
136 km E of Yamada, Japan
A magnitude 5.1 mb earthquake at 10 km depth.
Published location
Where is 136 km E of Yamada, 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.
39.392800, 143.527400
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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
us200026su
Coordinates
39.3928, 143.5274
Network
us
Significance
414