QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgemsup16958080
USGS iscgemsup16958080
20 Apr 1910, 22:22
254 km WNW of Houma, Tonga
A magnitude 7 mB earthquake at 350 km depth.
Published location
Where is 254 km WNW of Houma, 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.
-20.251000, -177.544000
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
iscgemsup16958080
Coordinates
-20.251, -177.544
Network
iscgemsup
Significance
754