QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/us1000d48j
USGS us1000d48j
14 Mar 2018, 11:46
122 km NW of Nuku‘alofa, Tonga
A magnitude 5.1 mb earthquake at 138.3 km depth.
Published location
Where is 122 km NW 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.
-20.382400, -176.059800
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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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Catalog fields and provenance
Event ID
us1000d48j
Coordinates
-20.3824, -176.0598
Network
us
Significance
400