QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000cawb
USGS usp000cawb
20 Oct 2003, 19:40
121 km W of Neiafu, Tonga
A magnitude 5.2 mb earthquake at 33 km depth.
Published location
Where is 121 km W of Neiafu, 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.
-18.598000, -175.134000
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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
usp000cawb
Coordinates
-18.598, -175.134
Network
us
Significance
416