Ohio alerts

Union County, Ohio weather alerts

No watches, warnings or advisories are in force for Union County.

Checked Sun, Sep 20, 2026, 10:22 AM EDT. Times are Eastern Daylight Time.

Union County forecastLive radar here

Radar

Reflectivity now over Union County, Ohio. Open it to see warnings and watches on the map.

Open the live radar with warnings and watches

Radar mosaic and map layers from NOAA MRMS. 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 122 alerts for Union County, including 25 severe thunderstorm warnings, 5 freeze warnings, 3 extreme cold warnings and 3 flash flood warnings.

ProductIssuedMost recent
Severe Thunderstorm Warning25Sep 3, 2026
Freeze Warning5Apr 20, 2026
Extreme Cold Warning3Jan 30, 2026
Flash Flood Warning3Sep 5, 2026
Flood Warning2Sep 5, 2026
High Wind Warning2Mar 15, 2026
Extreme Heat Warning1Jun 30, 2026
Winter Storm Warning1Jan 24, 2026
Severe Thunderstorm Watch15Sep 5, 2026
Flood Watch5Sep 17, 2026
Freeze Watch3Apr 20, 2026
Tornado Watch2Mar 26, 2026
Extreme Cold Watch1Jan 26, 2026
High Wind Watch1Mar 13, 2026
Winter Storm Watch1Jan 24, 2026
Flood Advisory11Sep 5, 2026
Dense Fog Advisory10Sep 13, 2026
Cold Weather Advisory9Feb 7, 2026
Wind Advisory7Mar 15, 2026
Winter Weather Advisory6Feb 23, 2026
Frost Advisory5May 3, 2026
Heat Advisory4Sep 1, 2026

Warnings issued

  1. Flood Warning
  2. Flash Flood Warning
  3. Severe Thunderstorm Warning
  4. Flash Flood Warning
  5. Severe Thunderstorm Warning
  6. Flood Warning
  7. Severe Thunderstorm Warning
  8. Flash Flood Warning
  9. Severe Thunderstorm Warning
  10. Severe Thunderstorm Warning
  11. Severe Thunderstorm Warning
  12. Severe Thunderstorm Warning
  13. Severe Thunderstorm Warning
  14. Severe Thunderstorm Warning
  15. Extreme Heat Warning
  16. Severe Thunderstorm Warning
  17. Severe Thunderstorm Warning
  18. Severe Thunderstorm Warning
  19. Severe Thunderstorm Warning
  20. Severe Thunderstorm Warning
  21. Severe Thunderstorm Warning
  22. Freeze Warning
  23. Severe Thunderstorm Warning
  24. Freeze Warning
  25. Freeze Warning
  26. Severe Thunderstorm Warning
  27. Severe Thunderstorm Warning
  28. Severe Thunderstorm Warning
  29. Severe Thunderstorm Warning
  30. Severe Thunderstorm Warning
  31. Severe Thunderstorm Warning
  32. Severe Thunderstorm Warning
  33. Severe Thunderstorm Warning
  34. High Wind Warning
  35. High Wind Warning
  36. Extreme Cold Warning
  37. Extreme Cold Warning
  38. Extreme Cold Warning
  39. Winter Storm Warning
  40. Severe Thunderstorm Warning
  41. Freeze Warning
  42. Freeze Warning
Every alert, most recent first
  1. Flood Watch
  2. Dense Fog Advisory
  3. Flood Warning
  4. Flash Flood Warning
  5. Flood Advisory
  6. Severe Thunderstorm Watch
  7. Severe Thunderstorm Warning
  8. Heat Advisory
  9. Flash Flood Warning
  10. Flood Watch
  11. Flood Advisory
  12. Flood Watch
  13. Severe Thunderstorm Watch
  14. Severe Thunderstorm Warning
  15. Flood Advisory
  16. Flood Warning
  17. Severe Thunderstorm Warning
  18. Flash Flood Warning
  19. Flood Advisory
  20. Severe Thunderstorm Warning
  21. Severe Thunderstorm Watch
  22. Severe Thunderstorm Watch
  23. Flood Watch
  24. Flood Advisory
  25. Severe Thunderstorm Warning
  26. Severe Thunderstorm Warning
  27. Severe Thunderstorm Warning
  28. Severe Thunderstorm Watch
  29. Flood Advisory
  30. Severe Thunderstorm Warning
  31. Flood Advisory
  32. Severe Thunderstorm Warning
  33. Severe Thunderstorm Watch
  34. Flood Advisory
  35. Heat Advisory
  36. Flood Advisory
  37. Severe Thunderstorm Watch
  38. Heat Advisory
  39. Extreme Heat Warning
  40. Heat Advisory

The 40 most recent of 122.

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.