Update: Red flag warning in place for Larimer/Boulder counties until Friday evening – enhanced fire threat

Published Jan 16, 2026

On Friday at 2:15 p.m. an updated red flag warning was released by the National Weather Service in effect until 6 p.m. for Larimer and Boulder counties between 6,000 and 9,000 Feet.

Winds are expected to be northwest 30 to 40 mph with gusts up to 65 mph and relative humidity as low as 18 percent.

“Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire,” explains the NWS.

What does a red flag warning mean?

A red flag warning indicates that either extreme fire weather conditions are currently happening or will happen soon, as per 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 should you do under a red flag warning?

A red flag warning demands vigilance and immediate readiness to respond to potential fires. The NWS provides these vital guidelines to minimize fire hazards and ensure your safety:

1. Secure burn barrels:

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. Prudent fire extinguishing practices:

To prevent inadvertent fires, diligently douse all outdoor fires. Quench them with a copious deluge of water and stir to guarantee complete cooling. Submerge charcoal until it’s thoroughly bereft of residual heat. Never depart from live charcoal unattended.

4. Never leave fires unattended:

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