QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp00006kc
USGS usp00006kc
31 May 1974, 15:04
78 km W of Bahía de Lobos, Mexico
A magnitude 6.3 ms earthquake at 33 km depth.
Published location
Where is 78 km W of Bahía de Lobos, Mexico?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
27.226000, -111.238000
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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
usp00006kc
Coordinates
27.226, -111.238
Network
us
Significance
611