Teller County Warnings, Watches and Advisories

When a severe thunderstorm warning is issued, the storm may produce damaging winds, large hail, dangerous lightning, and heavy rain. In some cases, heavy rainfall produced by a severe storm can also lead to flash flooding. Do not drive vehicles through flooded areas. The water depth or fast flowing water/mud/debris from a flash flood will make road conditions unsafe. Do not rely soley on data presented here or other third-party websites - always check your official national and local weather service agency website, socials, radio and/or TV stations for making critical decisions related to weather events.

Please carefully read each posted Warning and Alert as it relates to the area(s) being affected. We may provide a wider range of issued severe weather warnings for surrounding cities and counties, so some alerts may not directly impact this location. This is done to help with preparing for severe weather that may overlap or be heading towards Teller County.

Use the Radar Maps link provided to understand the trajectory of a storm.

Flood Advisory issued July 20 at 1:35PM MDT until July 20 at 4:30PM MDT by NWS Denver CO

* WHAT...Small stream flooding caused by excessive rainfall is expected. * WHERE...Southern Larimer County in north central Colorado within the upper Buckhorn Basin in the Cameron Peak burn area... * WHEN...Until 430 PM MDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Rises in small streams and normally dry creeks. * ADDITIONAL DETAILS... - At 132 PM MDT, Doppler radar indicated heavy rain due to thunderstorms. This may cause small stream flooding. Between 0.5 and 1 inch of rain has fallen. - Some locations that will experience flooding include... Buckhorn Creek, Cascade Creek.

Flood Advisory issued July 20 at 1:06PM MDT until July 20 at 4:15PM MDT by NWS Grand Junction CO

* WHAT...Small stream flooding caused by excessive rainfall is expected. * WHERE...A portion of northwest Colorado, including the following counties, Garfield and Rio Blanco. * WHEN...Until 415 PM MDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Water over roadways. River or stream flows are elevated. * ADDITIONAL DETAILS... - At 106 PM MDT, Doppler radar indicated heavy rain due to thunderstorms. This will cause small stream flooding. Between 0.8 and 1.2 inches of rain have fallen. - South Fork White River is the most likely place to experience minor flooding. - Some locations that will experience flooding include... mainly rural areas of Eastern Rio Blanco and East Central Garfield Counties - http://www.weather.gov/safety/flood

Heat Advisory issued July 20 at 12:53PM MDT until July 20 at 8:00PM MDT by NWS Pueblo CO

* WHAT...Maximum temperatures ranging between 95 to 100 degrees are anticipated. * WHERE...Eastern Fremont county and El Paso County below 7500 feet. * WHEN...Until 8 PM MDT this evening. * IMPACTS...Hot temperatures may cause heat illnesses.

Hydrologic Outlook issued July 20 at 10:32AM MDT by NWS Grand Junction CO

ESFGJT Anomalous moisture has become established across portions of eastern Utah and western Colorado. Scattered thunderstorms capable of producing heavy rain are expected this afternoon and early evening. Rainfall rates of 1-2 inches per hour will be possible with the stronger storms. These rates could lead to flash flooding and debris flows especially over steep terrain and recent burn scars. Also, rain over the past several days has lead to saturated soils, which increase the chances for excessive runoff. As a reminder: Keep an eye on our forecasts through the end of the week and stay tuned for updated hydrology alerts if visiting or if you reside below vulnerable terrain to flash flooding and/or debris flows. Storms across the west develop quickly, leaving little room for lead time in flashy terrain.

Air Quality Alert issued July 20 at 9:10AM MDT by NWS Denver CO

The Colorado Department of Public Health and Environment has issued the following... WHAT...Ozone Action Day Alert. WHERE...Douglas, Jefferson, Denver, western Arapahoe, western Adams, Broomfield, Boulder, Larimer, and Weld Counties WHEN...400 PM Sunday July 19 to 400 PM Monday July 20 IMPACTS...Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Ozone levels are expected to reach the Unhealthy for Sensitive Groups category on Sunday and Monday in the northern Colorado Front Range. Elevated levels of ozone are possible from the Denver Metro area northward, including Fort Collins and Greeley. For Colorado air quality conditions, forecasts, and advisories, visit: https://www.colorado.gov/airquality/colorado_summary.aspx If possible, please help us reduce ozone pollution by limiting driving gas and diesel-powered vehicles until at least 4 p.m. Monday, July 20, 2026. Colorado is also addressing ozone pollution through state policies. For more information about health impacts and how ozone pollution forms in Colorado, visit: https://cdphe.colorado.gov/ozone- pollution-and-your-health HEALTH INFORMATION...Increasing likelihood of respiratory symptoms and breathing discomfort in active children and adults and people with lung disease, such as asthma. Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy outdoor exertion.

Air Quality Alert issued July 20 at 9:10AM MDT by NWS Pueblo CO

The Colorado Department of Public Health and Environment has issued the following... WHAT...Air Quality Health Advisory for Wildfire Smoke. WHERE...Custer and southwestern Pueblo Counties. Locations include, but are not limited to Westcliffe, Rye, Beulah, and Colorado City. WHEN...900 AM Monday July 20 to 900 AM Tuesday July 21 IMPACTS...Moderate to heavy smoke from the Aspen Acres Fire is possible throughout the advisory area through at least Tuesday morning. HEALTH INFORMATION...Public Health Recommendations: Increasing likelihood of respiratory symptoms in sensitive individuals, aggravation of heart or lung disease and premature mortality in people with cardiopulmonary disease and older adults. People with heart or lung disease, older adults, and children should reduce prolonged or heavy exertion.

Heat Advisory issued July 20 at 3:24AM MDT until July 20 at 9:00PM MDT by NWS Denver CO

* WHAT...High Temperatures 99 to 103. * WHERE...Fort Collins, Boulder, Denver metro, and Greeley. * WHEN...Until 9 PM MDT this evening. * IMPACTS...Hot temperatures may cause heat illnesses.

Air Quality Alert issued July 19 at 10:10PM MDT by NWS Denver CO

The Colorado Department of Public Health and Environment has issued the following... WHAT...Ozone Action Day Alert. WHERE...Douglas, Jefferson, Denver, western Arapahoe, western Adams, Broomfield, Boulder, Larimer, and Weld Counties WHEN...400 PM Sunday July 19 to 400 PM Monday July 20 IMPACTS...Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Ozone levels are expected to reach the Unhealthy for Sensitive Groups category on Sunday and Monday in the northern Colorado Front Range. Elevated levels of ozone are possible from the Denver Metro area northward, including Fort Collins and Greeley. For Colorado air quality conditions, forecasts, and advisories, visit: https://www.colorado.gov/airquality/colorado_summary.aspx If possible, please help us reduce ozone pollution by limiting driving gas and diesel-powered vehicles until at least 4 p.m. Monday, July 20, 2026. Colorado is also addressing ozone pollution through state policies. For more information about health impacts and how ozone pollution forms in Colorado, visit: https://cdphe.colorado.gov/ozone- pollution-and-your-health HEALTH INFORMATION...Increasing likelihood of respiratory symptoms and breathing discomfort in active children and adults and people with lung disease, such as asthma. Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy outdoor exertion.

Air Quality Alert issued July 19 at 8:10PM MDT by NWS Denver CO

The Colorado Department of Public Health and Environment has issued the following... WHAT...Ozone Action Day Alert. WHERE...Douglas, Jefferson, Denver, western Arapahoe, western Adams, Broomfield, Boulder, Larimer, and Weld Counties WHEN...400 PM Sunday July 19 to 400 PM Monday July 20 IMPACTS...Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Ozone levels are expected to reach the Unhealthy for Sensitive Groups category on Sunday and Monday in the northern Colorado Front Range. Elevated levels of ozone are possible from the Denver Metro area northward, including Fort Collins and Greeley. For Colorado air quality conditions, forecasts, and advisories, visit: https://www.colorado.gov/airquality/colorado_summary.aspx If possible, please help us reduce ozone pollution by limiting driving gas and diesel-powered vehicles until at least 4 p.m. Monday, July 20, 2026. Colorado is also addressing ozone pollution through state policies. For more information about health impacts and how ozone pollution forms in Colorado, visit: https://cdphe.colorado.gov/ozone- pollution-and-your-health HEALTH INFORMATION...Increasing likelihood of respiratory symptoms and breathing discomfort in active children and adults and people with lung disease, such as asthma. Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy outdoor exertion.

Air Quality Alert issued July 19 at 4:10PM MDT by NWS Denver CO

The Colorado Department of Public Health and Environment has issued the following... WHAT...Ozone Action Day Alert. WHERE...Douglas, Jefferson, Denver, western Arapahoe, western Adams, Broomfield, Boulder, Larimer, and Weld Counties WHEN...400 PM Sunday July 19 to 400 PM Monday July 20 IMPACTS...Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Ozone levels are expected to reach the Unhealthy for Sensitive Groups category on Sunday and Monday in the northern Colorado Front Range. Elevated levels of ozone are possible from the Denver Metro area northward, including Fort Collins and Greeley. For Colorado air quality conditions, forecasts, and advisories, visit: https://www.colorado.gov/airquality/colorado_summary.aspx If possible, please help us reduce ozone pollution by limiting driving gas and diesel-powered vehicles until at least 4 p.m. Monday, July 20, 2026. Colorado is also addressing ozone pollution through state policies. For more information about health impacts and how ozone pollution forms in Colorado, visit: https://cdphe.colorado.gov/ozone- pollution-and-your-health HEALTH INFORMATION...Increasing likelihood of respiratory symptoms and breathing discomfort in active children and adults and people with lung disease, such as asthma. Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy outdoor exertion.