Japan – Kosa

This page summarizes earthquakes in Kosa (Japan). The most recently recorded event was a magnitude M3.1 earthquake near Kosa on 2026-07-28 13:33:30 UTC. All event lists and map markers are limited to the last 30 days.

Earthquakes (last 30 days)

Max magnitude (last 30 days)

M4.2

Avg magnitude (last 30 days)

M3.36

Avg depth (last 30 days)

10 km

Seismic activity in 2026

In 2026, Kosa recorded 8 earthquakes within Japan. The strongest event reached M4.2.

Located on the Amur Plate.

Map (last 30 days)

< 2 2–4 4–5 ≥ 5

Earthquakes in Kosa (last 30 days)

M3.1

Kosa

2026-07-28 · 13:33 UTC · 10 km

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M3.3

Kosa

2026-07-28 · 13:23 UTC · 10 km

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M3.2

Kosa

2026-07-28 · 11:04 UTC · 10 km

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M3.3

Kosa

2026-07-28 · 10:07 UTC · 10 km

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M3.3

Kosa

2026-07-28 · 09:50 UTC · 10 km

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M3.4

Kosa

2026-07-28 · 09:39 UTC · 10 km

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M3.1

Kosa

2026-07-28 · 08:14 UTC · 10 km

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M4.2

Kosa

2026-07-28 · 07:39 UTC · 10 km

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