QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp0000e2c
USGS usp0000e2c
25 Dec 1975, 23:22
87 km W of Ambunti, Papua New Guinea
A magnitude 6.6 mb earthquake at 115 km depth.
Published location
Where is 87 km W of Ambunti, Papua New Guinea?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
-4.084000, 142.040000
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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
usp0000e2c
Coordinates
-4.084, 142.04
Network
us
Significance
670