QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000019y
USGS usp000019y
7 Apr 1973, 13:22
east of the South Sandwich Islands
A magnitude 6.7 ms earthquake at 33 km depth.
Published location
Where is east of the South Sandwich Islands?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
-58.302000, -13.394000
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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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Nearby events with a similar magnitude
Catalog fields and provenance
Event ID
usp000019y
Coordinates
-58.302, -13.394
Network
us
Significance
691