QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem906680
USGS iscgem906680
18 Mar 1931, 08:02
37 km S of San Antonio, Chile
A magnitude 7.2 mw earthquake at 35 km depth.
Published location
Where is 37 km S of San Antonio, Chile?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
-33.926000, -71.556000
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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
iscgem906680
Coordinates
-33.926, -71.556
Network
iscgem
Significance
798