QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp0001vbx
USGS usp0001vbx
15 May 1983, 01:24
168 km NW of Pangai, Tonga
A magnitude 6.5 ms earthquake at 33 km depth.
Published location
Where is 168 km NW of Pangai, Tonga?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
-18.907000, -175.641000
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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
usp0001vbx
Coordinates
-18.907, -175.641
Network
us
Significance
650