M 4.9 earthquake in Japan (Nagano) — April 18, 2026

M 4.9 earthquake in Japan (Nagano) — April 18, 2026. Epicenter 33 km W of Nagano, depth 10 km, 13:20 Local (2026-04-18 04:20 UTC). Shaking felt by ~3.5M people. Readings from every reporting agency, affected towns, aftershock sequence.

33 km W of Nagano (Japan) — 36.5963, 137.8008