Disasters · Earthquake

M4.6 · Japan

First tracked 6 August 2026 · Last updated 7 August 2026

M4.6

Magnitude

10 km

Depth

636,199

Population exposed

640 thousand in MMI III

Exposure detail

An M4.6 earthquake struck 145 km east of Yamada, Japan, at a shallow depth of 10 km. The USGS recorded a green PAGER alert with an estimated population exposure of 636,199. No tsunami was generated.

Sources

USGS ↗GDACS ↗GDACS ↗

Source: USGS & GDACS & GDACS · figures reported · Reviewed