Japan – Chiba Prefecture

This page summarizes earthquakes in Chiba Prefecture (Japan). The most recently recorded event was a magnitude M3.7 earthquake near Isumi on 2026-06-18 18:44:30 UTC. All event lists and map markers are limited to the last 30 days.

Earthquakes (last 30 days)
3
Max magnitude (last 30 days)
M5.6
Avg magnitude (last 30 days)
M5.08
Avg depth (last 30 days)
51 km
Seismic activity in 2026

In 2026, Chiba Prefecture recorded 3 earthquakes within Japan.

Located on the Okhotsk Plate.

Map (last 30 days)
< 2 2–4 4–5 ≥ 5
Earthquakes in Chiba Prefecture (last 30 days)