This page summarizes earthquakes in Sierra County (United States). The most recently recorded event was a magnitude M2.2 earthquake near Sierra County on 2026-08-06 09:27:17 UTC. All event lists and map markers are limited to the last 30 days.
In 2026, Sierra County recorded 8 earthquakes within United States. The strongest event reached M2.5.
Located on the North America Plate.
