South Dakota alerts

Mellette County, South Dakota weather alerts

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

Checked Sun, Sep 20, 2026, 1:43 PM CDT. Times are Central Daylight Time.

Mellette County forecastLive radar here

Warnings on the map

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

Every watch, warning and advisory the National Weather Service has in force over Mellette County, South Dakota 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 Mellette 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 Mellette County

In the past year the National Weather Service issued 105 alerts for Mellette County, including 34 severe thunderstorm warnings, 13 red flag warnings, 6 high wind warnings and 1 extreme heat warning.

ProductIssuedMost recent
Severe Thunderstorm Warning34Aug 27, 2026
Red Flag Warning13May 11, 2026
High Wind Warning6Mar 12, 2026
Extreme Heat Warning1Jul 25, 2026
Tornado Warning1Jun 29, 2026
Severe Thunderstorm Watch12Aug 27, 2026
Fire Weather Watch6May 11, 2026
High Wind Watch5Mar 12, 2026
Tornado Watch3Jun 27, 2026
Extreme Heat Watch1Jul 11, 2026
Wind Advisory7Jun 17, 2026
Dense Fog Advisory4Sep 17, 2026
Cold Weather Advisory3Jan 25, 2026
Frost Advisory3May 20, 2026
Heat Advisory3Jul 29, 2026
Winter Weather Advisory3Apr 3, 2026

Warnings issued

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

The 40 most recent of 105.

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 Mellette 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.