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.
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.























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.
| Product | Issued | Most recent |
|---|---|---|
| Red Flag Warning | 40 | Aug 5, 2026 |
| Severe Thunderstorm Warning | 12 | Sep 6, 2026 |
| High Wind Warning | 11 | Mar 12, 2026 |
| Freeze Warning | 6 | May 6, 2026 |
| Winter Storm Warning | 5 | May 18, 2026 |
| Flash Flood Warning | 2 | Aug 14, 2026 |
| Snow Squall Warning | 2 | Feb 17, 2026 |
| Fire Weather Watch | 31 | Aug 5, 2026 |
| High Wind Watch | 7 | Mar 12, 2026 |
| Freeze Watch | 4 | May 19, 2026 |
| Severe Thunderstorm Watch | 3 | Aug 26, 2026 |
| Winter Storm Watch | 3 | May 5, 2026 |
| Flood Watch | 1 | Aug 15, 2026 |
| Winter Weather Advisory | 21 | May 18, 2026 |
| Flood Advisory | 19 | Sep 6, 2026 |
| Heat Advisory | 6 | Aug 8, 2026 |
| Dense Fog Advisory | 3 | Dec 3, 2025 |
| Frost Advisory | 2 | May 19, 2026 |
| Cold Weather Advisory | 1 | Jan 25, 2026 |
Warnings issued
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Flash Flood Warning
- Red Flag Warning
- Severe Thunderstorm Warning
- Flash Flood Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Red Flag Warning
- Red Flag Warning
- Red Flag Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Red Flag Warning
- Red Flag Warning
- Red Flag Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Winter Storm Warning
- Red Flag Warning
- Freeze Warning
- Winter Storm Warning
- Red Flag Warning
- Red Flag Warning
- Red Flag Warning
- Freeze Warning
- Red Flag Warning
- Red Flag Warning
- Red Flag Warning
- Red Flag Warning
- Red Flag Warning
- Red Flag Warning
- Red Flag Warning
- Red Flag Warning
- Red Flag Warning
- Red Flag Warning
- Red Flag Warning
- Red Flag Warning
- Red Flag Warning
- High Wind Warning
- Red Flag Warning
- Winter Storm Warning
- Red Flag Warning
- Red Flag Warning
- Red Flag Warning
- Winter Storm Warning
- High Wind Warning
- Red Flag Warning
- High Wind Warning
- Red Flag Warning
- High Wind Warning
- Snow Squall Warning
- Snow Squall Warning
- Red Flag Warning
- Red Flag Warning
- Red Flag Warning
- High Wind Warning
And 18 earlier warnings.
Every alert, most recent first
- Flood Advisory
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Flood Advisory
- Severe Thunderstorm Warning
- Severe Thunderstorm Watch
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Flood Advisory
- Flood Watch
- Flash Flood Warning
- Flood Advisory
- Flood Advisory
- Heat Advisory
- Fire Weather Watch
- Red Flag Warning
- Heat Advisory
- Flood Advisory
- Flood Advisory
- Severe Thunderstorm Warning
- Flash Flood Warning
- Flood Advisory
- Flood Advisory
- Heat Advisory
- Heat Advisory
- Flood Advisory
- Flood Advisory
- Flood Advisory
- Flood Advisory
- Severe Thunderstorm Warning
- Flood Advisory
- Flood Advisory
- Flood Advisory
- Flood Advisory
- Severe Thunderstorm Warning
- Flood Advisory
- Flood Advisory
- Heat Advisory
- Heat Advisory
- 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.