United States – Sierra County

This page summarizes earthquakes in Sierra County (United States). The most recently recorded event was a magnitude M2.2 earthquake near Sattley on 2026-05-26 23:00:11 UTC. All event lists and map markers are limited to the last 30 days.

Earthquakes (last 30 days)
1
Max magnitude (last 30 days)
M2.2
Avg magnitude (last 30 days)
M2.20
Avg depth (last 30 days)
1 km
Seismic activity in 2026

In 2026, Sierra County recorded 7 earthquakes within United States. The strongest event reached M2.5.

Located on the North America Plate.

Map (last 30 days)
< 2 2–4 4–5 ≥ 5
Earthquakes in Sierra County (last 30 days)