Union County, Tennessee weather alerts
No watches, warnings or advisories are in force for Union County.
Checked Sun, Sep 20, 2026, 1:20 PM EDT. Times are Eastern Daylight Time.
Warnings on the map
Every watch, warning and advisory the National Weather Service has in force over Union County, Tennessee. Open it for the live map, where it pans and zooms.
Open the live map with warnings and watches
Map layer from NOAA National Weather Service. Boundaries from the Iowa Environmental Mesonet.
Alerts in force
Nothing is in force for Union County right now. Its warnings come from the National Weather Service and appear here within a minute of being issued; every one of the past year is below.
The past year in Union County
In the past year the National Weather Service issued 69 alerts for Union County, including 11 severe thunderstorm warnings, 5 flash flood warnings and 2 winter storm warnings.
| Product | Issued | Most recent |
|---|---|---|
| Severe Thunderstorm Warning | 11 | Aug 17, 2026 |
| Flash Flood Warning | 5 | Jul 22, 2026 |
| Winter Storm Warning | 2 | Jan 30, 2026 |
| Flood Watch | 7 | Aug 12, 2026 |
| Severe Thunderstorm Watch | 5 | Aug 17, 2026 |
| Winter Storm Watch | 2 | Jan 24, 2026 |
| Flood Advisory | 14 | Aug 17, 2026 |
| Dense Fog Advisory | 9 | Sep 13, 2026 |
| Cold Weather Advisory | 4 | Jan 31, 2026 |
| Heat Advisory | 3 | Sep 3, 2026 |
| Wind Advisory | 3 | Mar 16, 2026 |
| Winter Weather Advisory | 2 | Jan 30, 2026 |
| Freezing Fog Advisory | 1 | Dec 7, 2025 |
| Frost Advisory | 1 | May 3, 2026 |
Warnings issued
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Flash Flood Warning
- Flash Flood Warning
- Flash Flood Warning
- Flash Flood Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Flash Flood Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Winter Storm Warning
- Winter Storm Warning
Every alert, most recent first
- Dense Fog Advisory
- Heat Advisory
- Heat Advisory
- Flood Advisory
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Watch
- Severe Thunderstorm Warning
- Flood Advisory
- Flood Watch
- Severe Thunderstorm Watch
- Severe Thunderstorm Warning
- Dense Fog Advisory
- Flood Advisory
- Severe Thunderstorm Watch
- Flood Advisory
- Flood Advisory
- Flood Advisory
- Flash Flood Warning
- Flood Advisory
- Flash Flood Warning
- Flood Advisory
- Flood Watch
- Severe Thunderstorm Watch
- Flash Flood Warning
- Flood Advisory
- Flash Flood Warning
- Flood Watch
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Heat Advisory
- Flood Advisory
- Flash Flood Warning
- Flood Watch
- Flood Watch
- Flood Watch
- Flood Watch
- Severe Thunderstorm Warning
- Flood Advisory
- Severe Thunderstorm Warning
The 40 most recent of 69.
From the Iowa Environmental Mesonet’s archive of NWS watches, warnings and advisories (VTEC), by the county’s own code and the forecast zones inside it. Each date links to the event at the IEM.
Nearby
The counties around Union County, with what is in force in each.
What this means
- Warning
- The hazard is happening or about to. Act now: a tornado warning means take shelter, a flash flood warning means move to higher ground.
- Watch
- Conditions favor the hazard. Nothing is happening yet; have a plan and be ready to act if a warning follows.
- Advisory
- A hazard that is less serious than a warning but can still cause trouble, such as dense fog, heat or light ice.
- Statement
- Information about weather that does not yet meet a warning: a strong storm, a hydrologic update, or a special weather statement.
Severity (extreme, severe, moderate, minor) is the rating the issuing office gives each product. More on the difference: tornado watch vs. tornado warning. Alerts come from the National Weather Service; follow its instructions and your local officials.
Sources
Alerts from the National Weather Service's public feed, read afresh every minute, and matched to counties and zones by their UGC codes. Warnings from outside the United States come from each country's own meteorological service. Follow the issuing office's instructions and your local officials.