QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgemsup16958221
USGS iscgemsup16958221
7 Dec 1912, 22:46
31 km SE of Villa Atamisqui, Argentina
A magnitude 7.3 mB earthquake at 620 km depth.
Published location
Where is 31 km SE of Villa Atamisqui, Argentina?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
-28.667000, -63.554000
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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
iscgemsup16958221
Coordinates
-28.667, -63.554
Network
iscgemsup
Significance
820