Disasters · Earthquake

M4.6 · Tonga

First tracked 5 August 2026 · Last updated 5 August 2026

M4.6

Magnitude

137 km

Depth

17,955

Population exposed

20 thousand in MMI III

Exposure detail

An M4.6 earthquake struck 99 km WSW of Houma, Tonga, at a depth of 137 km. The estimated population exposure was 17,955.

Sources

Source: USGS & GDACS · figures reported · Reviewed