QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp0002kq9
USGS usp0002kq9
12 Oct 1985, 03:12
133 km WSW of Haveluloto, Tonga
A magnitude 6.3 mw earthquake at 155 km depth.
Published location
Where is 133 km WSW of Haveluloto, 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.
-21.656000, -176.382000
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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
usp0002kq9
Coordinates
-21.656, -176.382
Network
us
Significance
611