United States – Dewey County

This page summarizes earthquakes in Dewey County (United States). The most recently recorded event was a magnitude M2.0 earthquake near Dewey County on 2026-08-16 20:25:08 UTC. All event lists and map markers are limited to the last 30 days.

Earthquakes (last 30 days)
1
Max magnitude (last 30 days)
M2.0
Avg magnitude (last 30 days)
M1.95
Avg depth (last 30 days)
0 km
Seismic activity in 2026

In 2026, Dewey County recorded 1 earthquakes within United States.

Located on the North America Plate.

Map (last 30 days)
< 2 2–4 4–5 ≥ 5
Earthquakes in Dewey County (last 30 days)
M2.0
Dewey County
2026-08-16 · 20:25 UTC · 0 km
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