QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp00020ph
USGS usp00020ph
21 Dec 1983, 12:05
38 km SE of Suncho Corral, Argentina
A magnitude 6.9 mw earthquake at 601.9 km depth.
Published location
Where is 38 km SE of Suncho Corral, 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.
-28.190000, -63.172000
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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
usp00020ph
Coordinates
-28.19, -63.172
Network
us
Significance
732