QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem7254258
USGS iscgem7254258
23 Feb 2004, 15:16
83 km SSW of Hihifo, Tonga
A magnitude 5.1 mw earthquake at 250 km depth.
Published location
Where is 83 km SSW 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.
-16.622000, -174.164000
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
iscgem7254258
Coordinates
-16.622, -174.164
Network
iscgem
Significance
397