QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000hfd1
USGS usp000hfd1
17 Jul 2010, 17:20
156 km WNW of Hihifo, Tonga
A magnitude 5.6 mwc earthquake at 10 km depth.
Published location
Where is 156 km WNW 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.
-15.661000, -175.223000
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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
usp000hfd1
Coordinates
-15.661, -175.223
Network
us
Significance
482