South Dakota earthquakes

Between Oct 28, 2025 and Oct 28, 2026, the USGS recorded 1 earthquakes of magnitude 2.5 or greater in or near South Dakota. The largest was M 2.7, 5 km ENE of Artesian, South Dakota, on Jan 9, 2026. 0 happened in the past 7 days.

This is not an early-warning system. For tsunami warnings see tsunami.gov; for emergencies follow local authorities.

Past 7 days

Updated Oct 28, 2026, 7:24 AM EDT (USGS snapshot)

No M 2.5+ earthquakes in or near South Dakota in the past 7 days.

By size, past year

M 2.5–2.9

M 3–3.9

M 4–4.9

M 5–5.9

M 6+

Latest 50 earthquakes (M 2.5+)

South Dakota: latest M 2.5+ earthquakes in the past year
Magnitude	Location	Time	Depth
M 2.7	5 km ENE of Artesian, South Dakota	Jan 9, 2026, 7:35 AM EST 292 days ago	5.1 km

Largest of the past year

South Dakota: 10 largest earthquakes, past 365 days
Magnitude	Location	Time	Depth
M 2.7	5 km ENE of Artesian, South Dakota	Jan 9, 2026, 7:35 AM EST 292 days ago	5.1 km

Month by month

M 2.5+ earthquakes per month (UTC)
Month	Quakes
January 2026	1

Source: USGS ComCat via the FDSN event web service, snapshot Oct 28, 2026. Matched by the USGS place name.

River gauges in South Dakota

Missouri River at Yankton, SD · 10.15 ft
Missouri River below La Framboise Island, at Pierre, SD · 20.76 ft
Cheyenne River near Eagle Butte, SD · 10.38 ft

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