This is a developing story.
Boulder firefighters responded to a wildfire on the 2nd Flatiron on Saturday night. The fire, which grew to half an acre before firefighters gained control, prompted an overnight operation aimed at containment and mop-up efforts. As of around 11:00 p.m., the fire was 50% contained. By 1 a.m. on Feb. 25, the fire was contained and extinguished.
The cause of the fire remains unknown, though it occurred on a Red Flag Warning day characterized by a dangerous mix of warm temperatures, low humidity and high winds. No evacuations were ordered, and there were no structures threatened.
At 10 p.m. on Saturday night, Boulder Fire-Rescue reported that 17 responders were engaged in containing the incident, with an additional 10 responders from Boulder County en route.

By about 11 p.m. the fire had been reduced to a quarter-acre with crews focusing on mop-up. “Mop-up during a wildfire refers to the hard physical labor process of extinguishing and removing burning material down to the mineral soil,” Boulder Fire-Rescue said on X. “This is a process that takes a lot of effort but goes a long way in mitigating spread.”
