QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/us6000h4ww
USGS us6000h4ww
16 Mar 2022, 00:39
139 km NNW of Nuku‘alofa, Tonga
A magnitude 5.4 mww earthquake at 188.1 km depth.
Published location
Where is 139 km NNW of Nuku‘alofa, 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.
-20.008700, -175.783600
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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
us6000h4ww
Coordinates
-20.0087, -175.7836
Network
us
Significance
449