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4.9MAG

LIGHT EARTHQUAKE

117 km WNW of Pangai, Tonga

USGS

A magnitude 4.9 earthquake struck 117 km WNW of Pangai, Tonga on 01 Sept 2026, 10:34 UTC. The hypocentre was 198.1 km below the surface — intermediate by seismological convention. 10 other earthquakes above our reporting threshold have been recorded within 250 km in the past 30 days.

Depth
198.1 km

intermediate

Latitude
19.44°S

175.40°W longitude

Time
10:34 UTC

01 Sept 2026

Magnitude
M4.9

mb

EPICENTRE

View the official report

MAGNITUDE 4.9

Noticeable shaking of indoor objects. Damage is unlikely.

The scale is logarithmic: this released about 710 times the energy of a magnitude 3.0, roughly the energy of 338 tonnes of TNT.

198.1 KM DEEP

At this depth the energy spreads before it reaches the surface. Shaking is usually weaker than a shallow earthquake of the same size, but it can be felt across a wider area.

NEARBY IN THE PAST 30 DAYS

10 earthquakes above our reporting threshold within 250 km of this one, the largest a magnitude 5.3.

OTHER RECENT EARTHQUAKES

M4.9 earthquake — Pangai, Tonga · Quakewire