QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem906886
USGS iscgem906886
21 Jul 1931, 04:36
161 km SSE of Isangel, Vanuatu
A magnitude 6.3 mw earthquake at 55 km depth.
Published location
Where is 161 km SSE of Isangel, Vanuatu?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
-20.868000, 169.917000
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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
iscgem906886
Coordinates
-20.868, 169.917
Network
iscgem
Significance
603