Union County weather alerts
There are no active weather alerts for Union County, NC right now.
Since 2016 the National Weather Service has issued about 678 alerts that included Union County, roughly 68 a year. The most common is the severe thunderstorm warning (165 from 2016 to 2025). The last tornado warning was issued on March 5, 2025. 23 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 Union County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Cabarrus County, Chesterfield County, Lancaster County, Anson County.
Union County alert history
Alert events that included Union County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Severe Thunderstorm Warning | 165 | 16 | August 28, 2026 |
| Flood Advisory | 86 | 9 | August 29, 2026 |
| Dense Fog Advisory | 79 | 3 | March 9, 2026 |
| Severe Thunderstorm Watch | 41 | 5 | September 6, 2026 |
| Heat Advisory | 37 | 13 | September 5, 2026 |
| Flood Watch | 36 | 0 | September 25, 2024 |
| Wind Advisory | 35 | 0 | March 15, 2025 |
| Frost Advisory | 31 | 1 | April 9, 2026 |
| Freeze Warning | 27 | 0 | November 11, 2025 |
| Tornado Watch | 26 | 0 | March 5, 2025 |
| Freeze Watch | 21 | 0 | November 11, 2025 |
| Flash Flood Warning | 19 | 0 | September 27, 2024 |
| Winter Weather Advisory | 17 | 1 | January 26, 2026 |
| Tornado Warning | 15 | 0 | March 5, 2025 |
| Flood Warning | 9 | 2 | July 24, 2026 |
| Red Flag Warning | 8 | 1 | March 28, 2026 |
| Winter Storm Watch | 6 | 2 | January 30, 2026 |
| Winter Storm Warning | 6 | 1 | January 30, 2026 |
| Cold Weather Advisory | 4 | 2 | February 1, 2026 |
| Tropical Storm Warning | 3 | 0 | September 25, 2024 |
| Fire Weather Watch | 3 | 0 | March 1, 2025 |
| High Wind Warning | 1 | 0 | February 24, 2016 |
| Tropical Storm Watch | 1 | 0 | October 10, 2018 |
| Extreme Heat Watch | 1 | 0 | June 14, 2022 |
| Extreme Heat Warning | 1 | 0 | June 14, 2022 |
| Extreme Cold Watch | 0 | 1 | January 31, 2026 |
| Extreme Cold Warning | 0 | 1 | January 31, 2026 |
| Ice Storm Warning | 0 | 1 | January 24, 2026 |
Tornado history in Union County
23 tornadoes have been recorded in Union County since 1950, killing 1 people and injuring 26. That ranks 22 of 100 counties in North Carolina. The most recent was on March 5, 2025 (rated EF1).
Strongest tornadoes in Union County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| May 5, 1989 | F4 | Union County | 13 mi | 500 yd | 1 | 6 |
| October 18, 1990 | F3 | Union County | 12 mi | 100 yd | 0 | 2 |
| March 24, 1975 | F2 | Union County | 30.6 mi | 100 yd | 0 | 1 |
| April 18, 1969 | F2 | Union County | 27.3 mi | 300 yd | 0 | 0 |
| June 7, 1968 | F2 | Mecklenburg County | 16.7 mi | 200 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| March 5, 2025 | EF1 | Union County | 2.3 mi | 75 yd | 0 | 0 |
| February 6, 2020 | EF1 | Mecklenburg County | 17.2 mi | 150 yd | 0 | 0 |
| December 28, 2015 | EF0 | Union County | 0.9 mi | 75 yd | 0 | 0 |
| September 5, 2011 | EF0 | Union County | 0.5 mi | 40 yd | 0 | 0 |
| April 16, 2011 | EF0 | Union County | 3 mi | 50 yd | 0 | 0 |
About Union County
- Population: 263,386 (2024 estimate)
- State: North Carolina
- NOAA Weather Radio SAME code: 037179 (how to use it)