QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp0003mmh
USGS usp0003mmh
8 Oct 1988, 05:46
166 km E of Neiafu, Tonga
A magnitude 7.1 mw earthquake at 35.2 km depth.
Published location
Where is 166 km E 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.
-18.771000, -172.415000
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
usp0003mmh
Coordinates
-18.771, -172.415
Network
us
Significance
776