QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem912178
USGS iscgem912178
6 Mar 1921, 07:25
40 km SW of Etchoropo, Mexico
A magnitude 6.3 mw earthquake at 15 km depth.
Published location
Where is 40 km SW of Etchoropo, 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.
26.497000, -109.958000
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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
iscgem912178
Coordinates
26.497, -109.958
Network
iscgem
Significance
603