QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000gxn9
USGS usp000gxn9
29 May 2009, 15:48
166 km SW of Hihifo, Tonga
A magnitude 5.2 mwc earthquake at 276.7 km depth.
Published location
Where is 166 km SW of Hihifo, 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.
-16.993000, -174.919000
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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
usp000gxn9
Coordinates
-16.993, -174.919
Network
us
Significance
416