QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem912776
USGS iscgem912776
2 May 1919, 03:07
151 km S of Hihifo, Tonga
A magnitude 6.6 mw earthquake at 25 km depth.
Published location
Where is 151 km S of Hihifo, 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.
-17.316000, -173.643000
Open the interactive map ↗Map data © OpenStreetMap contributors
What the numbers mean
Magnitude measures event size; depth locates the source below the surface. Neither value alone establishes local damage or personal risk.
Need a current safety answer?
Use local emergency authorities and the live USGS event page. This historical evidence page is not an alert service.
Continue exploring
Nearby events with a similar magnitude
Catalog fields and provenance
Event ID
iscgem912776
Coordinates
-17.316, -173.643
Network
iscgem
Significance
676