QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000h1yy
USGS usp000h1yy
29 Sept 2009, 19:05
78 km E of Hihifo, Tonga
A magnitude 5.1 mb earthquake at 10 km depth.
Published location
Where is 78 km E 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.
-16.017000, -173.061000
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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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Nearby events with a similar magnitude
Catalog fields and provenance
Event ID
usp000h1yy
Coordinates
-16.017, -173.061
Network
us
Significance
400