QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000295p
USGS usp000295p
17 Nov 1984, 22:43
183 km W of Neiafu, Tonga
A magnitude 6.2 mw earthquake at 33 km depth.
Published location
Where is 183 km W of Neiafu, 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.
-18.404000, -175.701000
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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
usp000295p
Coordinates
-18.404, -175.701
Network
us
Significance
591