Colorado alerts

Larimer County, Colorado weather alerts

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

Checked Sun, Sep 20, 2026, 9:09 AM MDT. Times are Mountain Daylight Time.

Larimer County forecastLive radar here

Warnings on the map

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

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

In the past year the National Weather Service issued 179 alerts for Larimer County, including 40 red flag warnings, 12 severe thunderstorm warnings, 11 high wind warnings and 6 freeze warnings.

ProductIssuedMost recent
Red Flag Warning40Aug 5, 2026
Severe Thunderstorm Warning12Sep 6, 2026
High Wind Warning11Mar 12, 2026
Freeze Warning6May 6, 2026
Winter Storm Warning5May 18, 2026
Flash Flood Warning2Aug 14, 2026
Snow Squall Warning2Feb 17, 2026
Fire Weather Watch31Aug 5, 2026
High Wind Watch7Mar 12, 2026
Freeze Watch4May 19, 2026
Severe Thunderstorm Watch3Aug 26, 2026
Winter Storm Watch3May 5, 2026
Flood Watch1Aug 15, 2026
Winter Weather Advisory21May 18, 2026
Flood Advisory19Sep 6, 2026
Heat Advisory6Aug 8, 2026
Dense Fog Advisory3Dec 3, 2025
Frost Advisory2May 19, 2026
Cold Weather Advisory1Jan 25, 2026

Warnings issued

  1. Severe Thunderstorm Warning
  2. Severe Thunderstorm Warning
  3. Severe Thunderstorm Warning
  4. Severe Thunderstorm Warning
  5. Severe Thunderstorm Warning
  6. Flash Flood Warning
  7. Red Flag Warning
  8. Severe Thunderstorm Warning
  9. Flash Flood Warning
  10. Severe Thunderstorm Warning
  11. Severe Thunderstorm Warning
  12. Red Flag Warning
  13. Red Flag Warning
  14. Red Flag Warning
  15. Severe Thunderstorm Warning
  16. Severe Thunderstorm Warning
  17. Red Flag Warning
  18. Red Flag Warning
  19. Red Flag Warning
  20. Severe Thunderstorm Warning
  21. Severe Thunderstorm Warning
  22. Winter Storm Warning
  23. Red Flag Warning
  24. Freeze Warning
  25. Winter Storm Warning
  26. Red Flag Warning
  27. Red Flag Warning
  28. Red Flag Warning
  29. Freeze Warning
  30. Red Flag Warning
  31. Red Flag Warning
  32. Red Flag Warning
  33. Red Flag Warning
  34. Red Flag Warning
  35. Red Flag 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. High Wind Warning
  44. Red Flag Warning
  45. Winter Storm Warning
  46. Red Flag Warning
  47. Red Flag Warning
  48. Red Flag Warning
  49. Winter Storm Warning
  50. High Wind Warning
  51. Red Flag Warning
  52. High Wind Warning
  53. Red Flag Warning
  54. High Wind Warning
  55. Snow Squall Warning
  56. Snow Squall Warning
  57. Red Flag Warning
  58. Red Flag Warning
  59. Red Flag Warning
  60. High Wind Warning

And 18 earlier warnings.

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

The 40 most recent of 179.

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 Larimer 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.