United States – Jefferson County

This page summarizes earthquakes in Jefferson County (United States). The most recently recorded event was a magnitude M0.2 earthquake near Jefferson County on 2026-06-15 22:42:20 UTC. All event lists and map markers are limited to the last 30 days.

Earthquakes (last 30 days)
1
Max magnitude (last 30 days)
M0.2
Avg magnitude (last 30 days)
M0.20
Avg depth (last 30 days)
18 km
Seismic activity in 2026

In 2026, Jefferson County recorded 9 earthquakes within United States. The strongest event reached M2.9.

Map (last 30 days)
< 2 2–4 4–5 ≥ 5
Earthquakes in Jefferson County (last 30 days)
M0.2
Jefferson County
2026-06-15 · 22:42 UTC · 18 km
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