Biggest Earthquakes in South Dakota - USGS Data
Explore the 20 biggest earthquakes across South Dakota 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.
Summary of Biggest Earthquakes
Magnitude Distribution (all magnitudes)
4 M1.5–2.9 earthquakes
1 M3.0–3.9 earthquake
Largest Earthquake
M3.0 at 22 km ESE of Hill View Heights, Wyoming on 6/29/2024
Most Recent Major Earthquake
Oldest Major Earthquake
Quick Stats
Time Since Last Earthquake
1 month, 4 days since the last earthquake (M2.6 at 11 km NNE of Burke, South Dakota on 4/27/2025)
Average Magnitude
2.80 (range: M2.6–M3.0)
Largest Earthquake by Depth
Deepest: M2.6 at 10.7 km (11 km NNW of Merriman, Nebraska, 7/7/2024)
Shallowest: M2.9 at 5.0 km (10 km WSW of Fairburn, South Dakota, 3/9/2025)