QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000fx9n
USGS usp000fx9n
23 Jan 2008, 12:20
81 km NNW of Nuku‘alofa, Tonga
A magnitude 5.1 mwc earthquake at 34.7 km depth.
Published location
Where is 81 km NNW of Nuku‘alofa, 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.
-20.462000, -175.511000
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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
usp000fx9n
Coordinates
-20.462, -175.511
Network
us
Significance
400