The map shows quakes of M1.5 and up from the last 90 days, the 1 biggest on record, and always the very latest quake — even if it was smaller than M1.5. The list below can include smaller ones the map leaves out. Tap any dot for details.
In the last 30 days, 0 earthquakes of M1.5 or bigger were recorded within 100 km of Fort Pierre. The biggest quake on record near Fort Pierre — records go back to 1980 — was the M4.4 of Mar 04, 1983, 06:32 UTC: 16 km N of Fort Thompson, South Dakota.
Latest earthquakes near Fort Pierre
| Mag | Location | Local time | Depth | Distance |
|---|---|---|---|---|
| M3.7 | 38 km NNW of Pierre, South Dakota | May 30, 2024, 02:39 PM | 15 km | 39 km NNW |
| M3.2 | 4 km ENE of Draper, South Dakota | Aug 04, 2022, 07:49 PM | 9 km | 47 km S |
| M3.0 | 8 km E of Agar, South Dakota | Aug 14, 2017, 07:55 PM | 5 km | 63 km NNE |
| M4.4 | 16 km N of Fort Thompson, South Dakota | Mar 04, 1983, 12:32 AM | 5 km | 78 km E |
Earthquakes per year near Fort Pierre (M3.0 and up, within 100 km)
M3.0–3.9 M4.0+
Each bar is one year; taller means more quakes (M3.0 and up). The dark red part is the bigger ones (M4.0+), counted inside the number above each bar — not added on top. These may be felt, depending on how far away and how deep they are. 2026 is not a full year yet — it only counts up to today. Source: USGS Earthquake Catalog.
The 1 biggest earthquakes on record near Fort Pierre (M4.0 and up, since 1980)
| Mag | Location | Date (UTC) | Distance |
|---|---|---|---|
| M4.4 | 16 km N of Fort Thompson, South Dakota | Mar 04, 1983, 06:32 UTC | 78 km |
Nearby places
Pierre, SD (2 km) · Onida, SD (47 km) · Murdo, SD (58 km)
USGS data fetched Nov 03, 2026, 15:45 UTC · page built Nov 03, 2026, 16:01 UTC. How to read this page: recent-window counts cover M1.5+ events within 100 km; the 10-year layer is based on M3.0+ and the history layer on M4.0+ since 1980. Recording completeness varies by era and region — small quakes from early decades are under-recorded, so “no record” does not prove “never happened”. Depths are relative to sea level and can be slightly negative for shallow events in elevated terrain. Method: data & methodology.