Montana alerts

Sweet Grass County, Montana weather alerts

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

Checked Sun, Sep 20, 2026, 10:31 AM MDT. Times are Mountain Daylight Time.

Sweet Grass County forecastLive radar here

Warnings on the map

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

Every watch, warning and advisory the National Weather Service has in force over Sweet Grass County, Montana 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 Sweet Grass 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 Sweet Grass County

In the past year the National Weather Service issued 151 alerts for Sweet Grass County, including 19 high wind warnings, 15 winter storm warnings, 8 severe thunderstorm warnings and 7 red flag warnings.

ProductIssuedMost recent
High Wind Warning19May 14, 2026
Winter Storm Warning15May 20, 2026
Severe Thunderstorm Warning8Jul 25, 2026
Red Flag Warning7Sep 10, 2026
Extreme Heat Warning3Aug 1, 2026
Flash Flood Warning2Sep 18, 2026
High Wind Watch14May 13, 2026
Winter Storm Watch11Apr 22, 2026
Fire Weather Watch7Sep 10, 2026
Severe Thunderstorm Watch5Aug 27, 2026
Flood Watch4Sep 18, 2026
Extreme Heat Watch3Aug 1, 2026
Flash Flood Watch1May 30, 2026
Wind Advisory29May 13, 2026
Winter Weather Advisory21Jun 27, 2026
Flood Advisory1Sep 18, 2026
Heat Advisory1Jul 24, 2026

Warnings issued

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

The 40 most recent of 151.

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 Sweet Grass 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.