QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgemsup909577
USGS iscgemsup909577
19 Oct 1927, 21:58
western Indian-Antarctic Ridge
A magnitude 6 mw earthquake at 10 km depth.
Published location
Where is western Indian-Antarctic Ridge?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
-49.359000, 123.716000
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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
iscgemsup909577
Coordinates
-49.359, 123.716
Network
iscgemsup
Significance
561