Montana alerts

Carbon County, Montana weather alerts

1 National Weather Service alert is in force for Carbon County: a flood watch.

Checked Sun, Sep 20, 2026, 9:18 AM MDT. Times are Mountain Daylight Time.

Carbon County forecastLive radar here

Warnings on the map

Every watch, warning and advisory the National Weather Service has in force over Carbon 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 Carbon 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 force1

Every product in force for Carbon County, worst first, with its full text.

Flood Watch

Severe

Flood Watch issued September 20 at 4:32AM MDT until September 20 at 6:00PM MDT by NWS Billings MT

Issued Until 8 hr 41 min left

Areas Musselshell, MT; Treasure, MT; Northern Rosebud, MT; Custer, MT; Fallon, MT; Powder River, MT; Carter, MT; Northern Big Horn, MT; Southern Rosebud, MT; Southern Big Horn, MT; Bighorn Canyon, MT; Pryor/Northern Bighorn Mountains, MT; Northeastern Yellowstone, MT; Southwestern Yellowstone, MT; Northeast Bighorn Mountains, WY; Sheridan Foothills, WY

Full text

Showers are turning light and tapering off along the western foothills, but healthier showers will continue over central and eastern portions of the forecast area today. The risk of flooding continues. * WHAT...Flooding caused by excessive rainfall is possible, along with flash flooding over recent burn scars. * WHERE...Southeast Montana and Sheridan County Wyoming. * WHEN...Through this afternoon. * IMPACTS...Excessive runoff may result in flooding of creeks and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. The risk of flooding will diminish late this afternoon and evening as showers taper off. * ADDITIONAL DETAILS... - The heaviest rainfall is slowly shifting eastward to southeast Montana and northeast Wyoming. - The Elk and McGhee-Remington burn scars are particularly vulnerable to flash flooding and debris flows. Any other burn scars from this summer will have elevated flash flood potential as well. - http://www.weather.gov/safety/flood

What to do

Monitor the latest forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.

NWS Billings MTShare this alert

The past year in Carbon County

In the past year the National Weather Service issued 96 alerts for Carbon County, including 14 winter storm warnings, 12 high wind warnings, 6 red flag warnings and 4 severe thunderstorm warnings.

ProductIssuedMost recent
Winter Storm Warning14May 20, 2026
High Wind Warning12May 13, 2026
Red Flag Warning6Sep 3, 2026
Severe Thunderstorm Warning4Jul 25, 2026
Extreme Heat Warning3Aug 1, 2026
Winter Storm Watch9Apr 22, 2026
Fire Weather Watch6Sep 3, 2026
High Wind Watch5Mar 12, 2026
Severe Thunderstorm Watch4Aug 23, 2026
Extreme Heat Watch3Aug 1, 2026
Flood Watch3Sep 18, 2026
Flash Flood Watch1May 30, 2026
Winter Weather Advisory24Jun 27, 2026
Flood Advisory1Jul 26, 2026
Heat Advisory1Jul 24, 2026

Warnings issued

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

The 40 most recent of 96.

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 Carbon 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.