Red flag warning for Boulder/Jefferson/Broomfield counties until early Tuesday evening

Published Jan 6, 2026

On Tuesday at 3:03 a.m. a red flag warning was released by the National Weather Service valid between 8 a.m. and 5 p.m. for Boulder/Jefferson counties below 6,000 feet/West Broomfield County.

The NWS states that the warning was issued for wind and low relative humidity. Winds are forecasted to be west 15 to 25 mph with gusts up to 55 mph and relative humidity as low as 11 percent.

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

What is the significance of a red flag warning?

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 steps should you follow during 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. 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. Responsible 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 thwart accidental fires, diligently extinguish all outdoor fires. Suffocate them with an ample deluge of water and stir to ensure complete cooling. Submerge charcoal in water until it’s entirely devoid of heat. Never leave live charcoal unattended.

4. Never desert a blaze:

Avoid abandoning any fire without supervision. Even minor sparks or drifting embers can incite nearby foliage or grass, setting off a rapidly spreading fire.

Understanding the gravity of a red flag warning and adhering to these precautions is paramount in averting wildfires during these perilous conditions. Prioritize safety, stay impeccably informed, and assume responsibility to shield lives and property.

Source: The National Weather Service