Gregory County weather alerts
There are no active weather alerts for Gregory County, SD right now.
Since 2016 the National Weather Service has issued about 880 alerts that included Gregory County, roughly 88 a year. The most common is the severe thunderstorm warning (181 from 2016 to 2025). The last tornado warning was issued on September 8, 2026. 28 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 Gregory County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Lyman County, Tripp County, Boyd County, Keya Paha County.
Gregory County alert history
Alert events that included Gregory County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Severe Thunderstorm Warning | 181 | 25 | September 7, 2026 |
| Wind Advisory | 101 | 5 | October 15, 2026 |
| Severe Thunderstorm Watch | 98 | 10 | September 8, 2026 |
| Winter Weather Advisory | 74 | 6 | March 16, 2026 |
| Red Flag Warning | 55 | 11 | May 12, 2026 |
| Heat Advisory | 54 | 5 | July 27, 2026 |
| Dense Fog Advisory | 40 | 7 | October 12, 2026 |
| Cold Weather Advisory | 38 | 3 | January 26, 2026 |
| Winter Storm Watch | 33 | 1 | March 15, 2026 |
| Fire Weather Watch | 30 | 7 | April 22, 2026 |
| Winter Storm Warning | 27 | 0 | March 7, 2025 |
| High Wind Warning | 23 | 5 | June 10, 2026 |
| Tornado Warning | 20 | 1 | September 8, 2026 |
| Flash Flood Warning | 13 | 0 | June 22, 2024 |
| Freeze Warning | 12 | 1 | May 2, 2026 |
| Blizzard Warning | 12 | 1 | March 15, 2026 |
| Frost Advisory | 10 | 4 | October 17, 2026 |
| High Wind Watch | 10 | 2 | March 13, 2026 |
| Extreme Cold Warning | 9 | 0 | February 18, 2025 |
| Flood Watch | 8 | 0 | June 21, 2024 |
| Extreme Heat Watch | 7 | 0 | July 27, 2025 |
| Tornado Watch | 6 | 3 | June 9, 2026 |
| Flood Warning | 6 | 0 | September 14, 2019 |
| Extreme Heat Warning | 5 | 1 | July 25, 2026 |
| Freeze Watch | 5 | 0 | October 7, 2023 |
| Extreme Cold Watch | 3 | 1 | January 23, 2026 |
Tornado history in Gregory County
28 tornadoes have been recorded in Gregory County since 1950, injuring 9 people. That ranks 33 of 66 counties in South Dakota. The most recent was on July 28, 2025 (rated EF2).
Strongest tornadoes in Gregory County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| May 8, 1965 | F3 | Gregory County | 1.5 mi | 20 yd | 0 | 0 |
| May 15, 1962 | F3 | Gregory County | 0.1 mi | 10 yd | 0 | 0 |
| June 20, 1968 | F2 | Gregory County | 33.5 mi | 10 yd | 0 | 0 |
| August 1, 1954 | F2 | Gregory County | 14.2 mi | 10 yd | 0 | 2 |
| July 28, 2025 | EF2 | Gregory County | 7.4 mi | 175 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| July 28, 2025 | EF2 | Gregory County | 7.4 mi | 175 yd | 0 | 0 |
| July 28, 2025 | EF0 | Gregory County | 2.7 mi | 50 yd | 0 | 0 |
| July 28, 2025 | EF1 | Gregory County | 11.7 mi | 150 yd | 0 | 0 |
| August 6, 2019 | EF1 | Gregory County | 3.8 mi | 75 yd | 0 | 2 |
| June 30, 2019 | EF0 | Gregory County | 0.7 mi | 25 yd | 0 | 0 |
About Gregory County
- Population: 4,110 (2024 estimate)
- State: South Dakota
- NOAA Weather Radio SAME code: 046053 (how to use it)