QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000gv5z
USGS usp000gv5z
19 Mar 2009, 19:27
193 km S of ‘Ohonua, Tonga
A magnitude 5 mb earthquake at 35.4 km depth.
Published location
Where is 193 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.
-23.084000, -174.978000
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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
usp000gv5z
Coordinates
-23.084, -174.978
Network
us
Significance
385