Update: Red flag warning in place for Central Colorado until Saturday night – increased fire danger

Published Mar 21, 2026

The National Weather Service issued an updated red flag warning at 11:54 a.m. on Saturday in effect until 10 p.m. for Central and Southeast Park County, Larimer and Boulder counties between 6,000 and 9,000 Feet and Jefferson and West Douglas counties above 6,000 feet/Gilpin/Clear Creek/Northeast Park counties below 9,000 feet.

Expect winds to be west 15 to 25 mph with gusts up to 35 mph and relative humidity 4 to 9%.

“All-time record March heat, exceptionally low humidity, and periods of breezy winds will drive critical fire weather conditions this afternoon, most pronounced above 6,000 ft and west of I-25 where winds will be strongest,” comments the NWS. “Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire.”

What is the significance of a red flag warning?

A red flag warning signifies that either extreme fire weather conditions are currently in effect or will be shortly, as stated by the NWS. Warm temperatures, very low humidities, and stronger winds are expected to combine to produce an increased risk of fire to spread rapidly.

What actions are necessary during a red flag warning?

During a red flag warning, it is crucial to exercise extreme caution and be prepared to take immediate action in case a fire starts. The NWS offers these steps you can take to lower the risk of fires igniting and ensure your safety:

1. Bolster burn barrel safety:

If burning is authorized in your vicinity, ensure that all burn barrels feature a weighted metal cover with holes no larger than 3/4 of an inch.

2. Mindful disposal of smoking materials:

Never discard lit cigarette butts outside, and avoid tossing cigarettes or matches from a moving vehicle. These seemingly small actions can lead to dry grass ignition, potentially sparking a wildfire.

3. Properly extinguish outdoor fires:

To safeguard against accidental fires, diligently extinguish all outdoor fires. Drown them with an ample amount of water and stir to confirm that everything is cold to the touch. Submerge charcoal in water until it’s thoroughly cooled. Never dispose of live charcoal on the ground.

4. Never desert a blaze:

Refrain from leaving any fire unattended. Even minor parks or embers might be carried into leaves or grass, kindling a fire that can swiftly expand.

Understanding the gravity of a red flag warning and adhering to these precautions is pivotal in mitigating the risk of wildfires during these perilous conditions. Prioritize safety, stay well-informed, and act responsibly to safeguard lives and property.

Source: The National Weather Service