QuakeFactsEvidence report · prepared 3 September 2026https://quakes99.com/entity/usp00038tb
USGS usp00038tb
28 Sept 1987, 12:47
79 km SSW of Port-Vila, Vanuatu
A magnitude 6.8 mw earthquake at 30.7 km depth.
Published location
Where is 79 km SSW of Port-Vila, 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.
-18.411000, 168.058000
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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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Catalog fields and provenance
Event ID
usp00038tb
Coordinates
-18.411, 168.058
Network
us
Significance
711