QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgemsup813263
USGS iscgemsup813263
18 Jan 1969, 04:02
South Sandwich Islands region
A magnitude 6.4 mw earthquake at 130 km depth.
Published location
Where is South Sandwich Islands region?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
-56.756000, -26.865000
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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
iscgemsup813263
Coordinates
-56.756, -26.865
Network
iscgemsup
Significance
628