QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/us1000ewy4
USGS us1000ewy4
21 Jun 2018, 00:23
116 km S of ‘Ohonua, Tonga
A magnitude 5.4 mww earthquake at 14 km depth.
Published location
Where is 116 km S 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.
-22.378000, -175.077100
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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
us1000ewy4
Coordinates
-22.378, -175.0771
Network
us
Significance
449