QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem901529
USGS iscgem901529
11 Aug 1940, 17:46
136 km SW of Asau, Samoa
A magnitude 6.3 mw earthquake at 15 km depth.
Published location
Where is 136 km SW of Asau, Samoa?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
-14.487000, -173.422000
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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
iscgem901529
Coordinates
-14.487, -173.422
Network
iscgem
Significance
609