QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/us1000e3zd
USGS us1000e3zd
13 May 2018, 06:50
121 km E of ‘Ohonua, Tonga
A magnitude 5.5 mww earthquake at 10 km depth.
Published location
Where is 121 km E of ‘Ohonua, 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.
-21.163700, -173.797200
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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
us1000e3zd
Coordinates
-21.1637, -173.7972
Network
us
Significance
465