QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000guxw
USGS usp000guxw
12 Mar 2009, 23:04
127 km NNW of Neiafu, Tonga
A magnitude 5.1 mwc earthquake at 116.1 km depth.
Published location
Where is 127 km NNW of Neiafu, 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.
-17.539000, -174.308000
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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
usp000guxw
Coordinates
-17.539, -174.308
Network
us
Significance
400