QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp00004r4
USGS usp00004r4
30 Dec 1973, 16:39
56 km W of Luganville, Vanuatu
A magnitude 6.6 ms earthquake at 10 km depth.
Published location
Where is 56 km W of Luganville, 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.
-15.506000, 166.639000
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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
usp00004r4
Coordinates
-15.506, 166.639
Network
us
Significance
670