Sully County weather alerts
There are no active weather alerts for Sully County, SD right now.
Since 2016 the National Weather Service has issued about 939 alerts that included Sully County, roughly 94 a year. The most common is the severe thunderstorm warning (212 from 2016 to 2025). The last tornado warning was issued on July 5, 2022. 22 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 Sully County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Hyde County, Potter County, Hughes County, Dewey County.
Sully County alert history
Alert events that included Sully County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Severe Thunderstorm Warning | 212 | 28 | September 27, 2026 |
| Wind Advisory | 130 | 9 | October 24, 2026 |
| Severe Thunderstorm Watch | 95 | 11 | August 24, 2026 |
| Winter Weather Advisory | 91 | 7 | April 3, 2026 |
| Dense Fog Advisory | 79 | 12 | November 7, 2026 |
| Heat Advisory | 44 | 5 | July 29, 2026 |
| Cold Weather Advisory | 43 | 3 | January 25, 2026 |
| Red Flag Warning | 41 | 9 | September 8, 2026 |
| High Wind Warning | 28 | 4 | March 12, 2026 |
| Winter Storm Watch | 27 | 1 | March 14, 2026 |
| Fire Weather Watch | 27 | 5 | May 15, 2026 |
| Winter Storm Warning | 21 | 2 | April 3, 2026 |
| High Wind Watch | 17 | 2 | March 12, 2026 |
| Extreme Cold Warning | 17 | 1 | January 23, 2026 |
| Blizzard Warning | 14 | 1 | March 15, 2026 |
| Frost Advisory | 14 | 3 | October 14, 2026 |
| Freeze Warning | 10 | 1 | May 20, 2026 |
| Tornado Watch | 9 | 3 | June 27, 2026 |
| Freeze Watch | 4 | 0 | October 7, 2023 |
| Flood Watch | 3 | 0 | August 1, 2025 |
| Flash Flood Warning | 3 | 0 | August 6, 2022 |
| Extreme Heat Watch | 2 | 0 | June 20, 2025 |
| Extreme Heat Warning | 2 | 1 | July 26, 2026 |
| Ice Storm Warning | 2 | 0 | November 10, 2022 |
| Extreme Cold Watch | 2 | 1 | January 23, 2026 |
| Flood Warning | 1 | 0 | June 27, 2018 |
| Tornado Warning | 1 | 0 | July 5, 2022 |
Tornado history in Sully County
22 tornadoes have been recorded in Sully County since 1950, injuring 1 people. That ranks 46 of 66 counties in South Dakota. The most recent was on October 13, 2021 (rated EF0).
Strongest tornadoes in Sully County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| October 1, 1971 | F2 | Sully County | 0.5 mi | 300 yd | 0 | 0 |
| August 24, 2006 | F1 | Sully County | 5 mi | 600 yd | 0 | 0 |
| July 16, 1982 | F1 | Sully County | 0.3 mi | 30 yd | 0 | 0 |
| May 8, 1965 | F1 | Sully County | 0.1 mi | 10 yd | 0 | 0 |
| April 27, 1974 | F1 | Sully County | 0.1 mi | 20 yd | 0 | 1 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| October 13, 2021 | EF0 | Sully County | 0.2 mi | 10 yd | 0 | 0 |
| August 24, 2006 | F1 | Sully County | 5 mi | 600 yd | 0 | 0 |
| June 24, 2006 | F0 | Sully County | 0.5 mi | 10 yd | 0 | 0 |
| June 11, 2003 | F0 | Sully County | 0.4 mi | 25 yd | 0 | 0 |
| July 22, 1999 | F0 | Sully County | 0.2 mi | 10 yd | 0 | 0 |
About Sully County
- Population: 1,468 (2024 estimate)
- State: South Dakota
- NOAA Weather Radio SAME code: 046119 (how to use it)