South Dakota alerts

Day County, South Dakota weather alerts

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

Checked Mon, Sep 21, 2026, 2:13 AM CDT. Times are Central Daylight Time.

Day County forecastLive radar here

Warnings on the map

Every watch, warning and advisory the National Weather Service has in force over Day 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 Day 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 Day 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 Day County

In the past year the National Weather Service issued 125 alerts for Day County, including 23 severe thunderstorm warnings, 8 red flag warnings, 6 flood warnings and 5 blizzard warnings.

ProductIssuedMost recent
Severe Thunderstorm Warning23Aug 30, 2026
Red Flag Warning8May 15, 2026
Flood Warning6Jul 31, 2026
Blizzard Warning5Mar 15, 2026
High Wind Warning4Jun 29, 2026
Tornado Warning4Jun 29, 2026
Flash Flood Warning3Jul 30, 2026
Winter Storm Warning3Apr 3, 2026
Extreme Cold Warning1Jan 22, 2026
Extreme Heat Warning1Jul 25, 2026
Freeze Warning1May 20, 2026
Severe Thunderstorm Watch8Aug 24, 2026
Fire Weather Watch3May 15, 2026
Winter Storm Watch3Apr 3, 2026
Extreme Cold Watch1Jan 22, 2026
Flood Watch1Jul 8, 2026
Tornado Watch1Jun 3, 2026
Winter Weather Advisory16Apr 1, 2026
Dense Fog Advisory12Sep 19, 2026
Wind Advisory10Jun 29, 2026
Cold Weather Advisory5Jan 25, 2026
Heat Advisory4Jul 29, 2026
Frost Advisory2May 11, 2026

Warnings issued

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

The 40 most recent of 125.

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 Day 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.