QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp0001cuk
USGS usp0001cuk
23 Mar 1981, 19:28
27 km WSW of San Antonio, Chile
A magnitude 6.2 ms earthquake at 46.3 km depth.
Published location
Where is 27 km WSW 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.
-33.661000, -71.892000
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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
usp0001cuk
Coordinates
-33.661, -71.892
Network
us
Significance
591