QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/us1000az4p
USGS us1000az4p
31 Oct 2017, 16:30
73 km ENE of Hihifo, Tonga
A magnitude 5 mb earthquake at 10 km depth.
Published location
Where is 73 km ENE 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.
-15.732900, -173.147200
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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
us1000az4p
Coordinates
-15.7329, -173.1472
Network
us
Significance
385