QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/us200029a4
USGS us200029a4
26 Apr 2015, 01:23
297 km WNW of Houma, Tonga
A magnitude 5.1 mb earthquake at 487.4 km depth.
Published location
Where is 297 km WNW of Houma, 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.
-19.833300, -177.777900
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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
us200029a4
Coordinates
-19.8333, -177.7779
Network
us
Significance
400