QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem903121
USGS iscgem903121
21 Jun 1937, 16:13
55 km SW of Santiago de Cao, Peru
A magnitude 7.1 mw earthquake at 30 km depth.
Published location
Where is 55 km SW of Santiago de Cao, Peru?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
-8.276000, -79.628000
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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
iscgem903121
Coordinates
-8.276, -79.628
Network
iscgem
Significance
778