Sioux County weather alerts
There are no active weather alerts for Sioux County, ND right now.
Since 2016 the National Weather Service has issued about 1,019 alerts that included Sioux County, roughly 102 a year. The most common is the severe thunderstorm warning (174 from 2016 to 2025). The last tornado warning was issued on September 14, 2025. 17 tornadoes have touched down in the county since 1950.
Updated from the National Weather Service · lists refresh hourly; the live map loads current alerts directly from the NWS
No warnings, watches or advisories include Sioux County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Morton County, Grant County, Corson County, Adams County.
Sioux County alert history
Alert events that included Sioux County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Severe Thunderstorm Warning | 174 | 27 | September 5, 2026 |
| Wind Advisory | 156 | 16 | November 2, 2026 |
| Severe Thunderstorm Watch | 100 | 8 | August 30, 2026 |
| Dense Fog Advisory | 97 | 14 | November 7, 2026 |
| Winter Weather Advisory | 95 | 8 | April 1, 2026 |
| Cold Weather Advisory | 67 | 2 | January 23, 2026 |
| Red Flag Warning | 53 | 8 | September 10, 2026 |
| Fire Weather Watch | 35 | 3 | May 16, 2026 |
| High Wind Warning | 27 | 2 | March 12, 2026 |
| Winter Storm Watch | 23 | 2 | April 3, 2026 |
| Freeze Warning | 22 | 2 | October 16, 2026 |
| High Wind Watch | 22 | 2 | March 12, 2026 |
| Frost Advisory | 20 | 3 | May 20, 2026 |
| Winter Storm Warning | 20 | 2 | April 3, 2026 |
| Extreme Cold Warning | 19 | 1 | January 22, 2026 |
| Heat Advisory | 18 | 5 | August 2, 2026 |
| Flood Warning | 12 | 0 | May 16, 2025 |
| Tornado Warning | 11 | 0 | September 14, 2025 |
| Blizzard Warning | 10 | 0 | April 4, 2023 |
| Tornado Watch | 10 | 3 | June 29, 2026 |
| Flood Advisory | 10 | 1 | September 28, 2026 |
| Freeze Watch | 7 | 0 | October 6, 2023 |
| Flood Watch | 4 | 1 | September 28, 2026 |
| Flash Flood Warning | 3 | 0 | September 14, 2025 |
| Extreme Cold Watch | 2 | 1 | January 22, 2026 |
| Extreme Heat Warning | 1 | 1 | July 11, 2026 |
| Ice Storm Warning | 1 | 0 | December 25, 2023 |
| Extreme Heat Watch | 0 | 1 | July 11, 2026 |
Tornado history in Sioux County
17 tornadoes have been recorded in Sioux County since 1950. That ranks 43 of 53 counties in North Dakota. The most recent was on August 28, 2024 (rated EF1).
Strongest tornadoes in Sioux County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| August 28, 2024 | EF1 | Sioux County | 2.2 mi | 300 yd | 0 | 0 |
| May 24, 2010 | EF1 | Sioux County | 1.6 mi | 40 yd | 0 | 0 |
| June 25, 1999 | F1 | Sioux County | 0.5 mi | 20 yd | 0 | 0 |
| June 21, 1983 | F1 | Sioux County | 0.3 mi | 17 yd | 0 | 0 |
| May 17, 1975 | F0 | Sioux County | 2.3 mi | 17 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| August 28, 2024 | EF1 | Sioux County | 2.2 mi | 300 yd | 0 | 0 |
| May 24, 2010 | EF0 | Sioux County | 1.4 mi | 35 yd | 0 | 0 |
| May 24, 2010 | EF1 | Sioux County | 1.6 mi | 40 yd | 0 | 0 |
| June 16, 2009 | EF0 | Sioux County | 0.2 mi | 20 yd | 0 | 0 |
| May 25, 2007 | EF0 | Sioux County | 0.3 mi | 200 yd | 0 | 0 |
About Sioux County
- Population: 3,713 (2024 estimate)
- State: North Dakota
- NOAA Weather Radio SAME code: 038085 (how to use it)