South Dakota alerts

Lyman County, South Dakota weather alerts

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

Checked Sun, Sep 20, 2026, 9:31 AM CDT. Times are Central Daylight Time.

Lyman County forecastLive radar here

Radar

Reflectivity now over Lyman County, South Dakota. 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 Lyman 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 Lyman County

In the past year the National Weather Service issued 133 alerts for Lyman County, including 34 severe thunderstorm warnings, 14 red flag warnings, 7 high wind warnings and 3 flood warnings.

ProductIssuedMost recent
Severe Thunderstorm Warning34Sep 4, 2026
Red Flag Warning14Sep 11, 2026
High Wind Warning7Mar 12, 2026
Flood Warning3Jul 30, 2026
Blizzard Warning1Mar 15, 2026
Extreme Heat Warning1Jul 25, 2026
Flash Flood Warning1Jul 30, 2026
Severe Thunderstorm Watch12Aug 24, 2026
Fire Weather Watch6May 15, 2026
High Wind Watch5Mar 12, 2026
Tornado Watch3Jun 27, 2026
Winter Storm Watch1Mar 14, 2026
Wind Advisory13Jun 27, 2026
Winter Weather Advisory11Apr 3, 2026
Dense Fog Advisory10Sep 19, 2026
Heat Advisory5Jul 29, 2026
Cold Weather Advisory4Jan 26, 2026
Frost Advisory2May 20, 2026

Warnings issued

  1. Red Flag Warning
  2. Severe Thunderstorm Warning
  3. Severe Thunderstorm Warning
  4. Severe Thunderstorm Warning
  5. Flood Warning
  6. Flash Flood Warning
  7. Extreme Heat 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. Flood Warning
  15. Severe Thunderstorm Warning
  16. Severe Thunderstorm Warning
  17. Severe Thunderstorm Warning
  18. Severe Thunderstorm Warning
  19. Flood 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. Severe Thunderstorm Warning
  37. Severe Thunderstorm Warning
  38. Severe Thunderstorm Warning
  39. Severe Thunderstorm Warning
  40. Severe Thunderstorm 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. Red Flag Warning
  48. Red Flag Warning
  49. Red Flag Warning
  50. Blizzard Warning
  51. High Wind Warning
  52. Red Flag Warning
  53. Red Flag Warning
  54. High Wind Warning
  55. Red Flag Warning
  56. High Wind Warning
  57. High Wind Warning
  58. High Wind Warning
  59. High Wind Warning
  60. High Wind Warning

And 1 earlier warnings.

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

The 40 most recent of 133.

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 Lyman 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.