QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp00003xk
USGS usp00003xk
25 Oct 1973, 15:08
4 km NNE of Yacuiba, Bolivia
A magnitude 6.1 mb earthquake at 529 km depth.
Published location
Where is 4 km NNE of Yacuiba, Bolivia?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
-21.985000, -63.656000
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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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Nearby events with a similar magnitude
Catalog fields and provenance
Event ID
usp00003xk
Coordinates
-21.985, -63.656
Network
us
Significance
572