QuakePulse

Biggest Earthquakes in Oregon - USGS Data

Explore the 20 biggest earthquakes across Oregon in the past 365 days, sourced from USGS data. View significant and minor quakes on our interactive map. No major quakes recorded? Check activity in nearby regions.

Note: This page shows the 20 biggest earthquakes in the region in the past 365 days, regardless of magnitude. Earthquakes smaller than M4.0 are removed after 365 days.

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Summary of Biggest Earthquakes

Magnitude Distribution (all magnitudes)

  • 11 M1.5–2.9 earthquakes

  • 8 M5.0–5.9 earthquakes

  • 1 M6.0–6.9 earthquake

Largest Earthquake

M6.0 at 27 km WNW of Klamath Falls, Oregon on 9/21/1993

Most Recent Major Earthquake

M3.0 at 6 km E of Pistol River, Oregon on 2/27/2025

Oldest Major Earthquake

M5.0 at 3 km ENE of Lakeview, Oregon on 1/11/1923

Quick Stats

Time Since Last Earthquake

3 months, 3 days since the last earthquake (M3.0 at 6 km E of Pistol River, Oregon on 2/27/2025)

Average Magnitude

3.84 (range: M2.3–M6.0)

Largest Earthquake by Depth

Deepest: M5.1 at 24.0 km (15 km SE of Plush, Oregon, 5/30/1968)

Shallowest: M2.4 at -1.6 km (6 km SW of Prineville, Oregon, 8/7/2024)