Missouri alerts

Saint Louis County, Missouri weather alerts

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

Checked Sun, Sep 20, 2026, 8:01 PM CDT. Times are Central Daylight Time.

Saint Louis County forecastLive radar here

Warnings on the map

Every watch, warning and advisory the National Weather Service has in force over Saint Louis County, Missouri. Open it for the live map, where it pans and zooms.

Every watch, warning and advisory the National Weather Service has in force over Saint Louis County, Missouri 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 Saint Louis 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 Saint Louis County

In the past year the National Weather Service issued 117 alerts for Saint Louis County, including 20 severe thunderstorm warnings, 11 flood warnings, 6 flash flood warnings and 5 tornado warnings.

ProductIssuedMost recent
Severe Thunderstorm Warning20Sep 9, 2026
Flood Warning11Jun 16, 2026
Flash Flood Warning6Jul 4, 2026
Tornado Warning5Apr 27, 2026
Extreme Heat Warning4Sep 3, 2026
Extreme Cold Warning1Jan 26, 2026
Red Flag Warning1Feb 27, 2026
Winter Storm Warning1Jan 24, 2026
Flood Watch6Aug 5, 2026
Severe Thunderstorm Watch6Jul 10, 2026
Tornado Watch5Jun 17, 2026
Extreme Heat Watch4Aug 31, 2026
Winter Storm Watch2Jan 24, 2026
Freeze Watch1Nov 2, 2025
Flood Advisory15Sep 10, 2026
Dense Fog Advisory9May 9, 2026
Heat Advisory6Sep 15, 2026
Wind Advisory6Jun 17, 2026
Cold Weather Advisory3Jan 26, 2026
Winter Weather Advisory3Mar 1, 2026
Frost Advisory2Mar 28, 2026

Warnings issued

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

The 40 most recent of 117.

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 Saint Louis 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.