Earthquakes in South Dakota

South Dakota rests on thick, stable midcontinent crust far from any plate boundary, so earthquakes are uncommon and generally small. When one does occur, the flat, hard crust spreads its shaking efficiently — and its rarity means it rarely goes unnoticed.

This page tracks live USGS seismic activity across South Dakota — 2 cities including Sioux Falls, Rapid City. The map and list above update continuously; open any city for a closer view with its own recent-quake and felt-radius detail.