Texas alerts

Williamson County, Texas weather alerts

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

Checked Sun, Sep 20, 2026, 9:22 AM CDT. Times are Central Daylight Time.

Williamson County forecastLive radar here

Radar

Reflectivity now over Williamson County, Texas. 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 Williamson 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 Williamson County

In the past year the National Weather Service issued 97 alerts for Williamson County, including 17 severe thunderstorm warnings, 7 flash flood warnings, 4 red flag warnings and 3 extreme heat warnings.

ProductIssuedMost recent
Severe Thunderstorm Warning17Sep 11, 2026
Flash Flood Warning7Jun 15, 2026
Red Flag Warning4Mar 15, 2026
Extreme Heat Warning3Aug 22, 2026
Flood Warning2Jun 6, 2026
Freeze Warning2Dec 2, 2025
Extreme Cold Warning1Jan 24, 2026
Ice Storm Warning1Jan 24, 2026
Winter Storm Warning1Jan 24, 2026
Flood Watch9Jul 13, 2026
Severe Thunderstorm Watch6May 19, 2026
Fire Weather Watch3Mar 15, 2026
Extreme Cold Watch1Jan 24, 2026
Winter Storm Watch1Jan 24, 2026
Flood Advisory20Jun 20, 2026
Heat Advisory9Sep 15, 2026
Dense Fog Advisory5Apr 22, 2026
Wind Advisory4Mar 15, 2026
Cold Weather Advisory1Jan 31, 2026

Warnings issued

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

The 40 most recent of 97.

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 Williamson 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.