Disasters · Earthquake

M4.8 · Japan

First tracked 4 August 2026 · Last updated 4 August 2026

M4.8

Magnitude

45 km

Depth

45,558

Population exposed

50 thousand in MMI III

Exposure detail

An M4.8 earthquake struck 43 km east-southeast of Koseda, Japan, at a depth of 45 km. The event exposed an estimated 45,558 people and generated one felt report. No tsunami was expected.

Sources

USGS ↗GDACS ↗

Source: USGS & GDACS · figures reported · Reviewed