Mullen Fire now at 117,420 Acres

Photo courtesy of InciWeb. Retardant is dropped during firefighting efforts to slow further spread of the Mullen Fire Oct. 1.

According to InciWeb, the Mullen Fire was less active the morning of Oct. 1, due to higher nighttime humidity recovery. Fire behavior was expected to increase as the day became warmer and drier, but the duration of that peak fire activity was expected to be shorter today. 

Structure protection efforts continue to protect communities already affected by the fire, and prepare others for potential fire impacts.

According to reports on InciWeb, the active behavior of both the Mullen Fire and Cameron Peak Fire is creating increasing smoke impacts to southern Wyoming and northern Colorado.

Despite aggressive actions by fire crews, the fire quickly moved across the Colorado state line into Jackson County late yesterday afternoon. Energized by dry fuels and winds, it ran several miles in just under an hour and a half. Crews were moved from other parts of the fire to assist with suppression efforts in response to the rapidly changing conditions.

During the evening, firefighters initiated burnout operations along WY230 between the Badger Creek Fire scar and the Colorado border. This is a key location where the fire could further advance southeast through Wyoming and into Larimer County, Colorado. Under favorable conditions, burning will continue today south to the junction of CO125.

Further to the north, crews burned west of Albany to hold the fire’s edge at the 542 road. They will continue burning toward the Keystone Fire burn scar to remove fuel and establish a stronger perimeter. Ongoing structure protection includes laying hoses, setting up sprinklers and portable pumps, and removing brush near structures to secure at-risk communities. Yesterday’s extreme fire activity prompted additional evacuations and road closures in both Wyoming and Colorado. The public should be aware of all restrictions and adjust travel and recreation plans as needed. According to reports on InciWeb, this fire has a history of moving at extreme rates of speed.

The Mullen Fire is occurring during an exceptional fire year when resources have been scarce. Though the total number of personnel has grown over the past two days, fire managers hope to increase the amount of both personnel and equipment in the coming days.

Fire Conditions and Weather

The Mullen Fire is exhibiting extreme fire behavior, moving through features that typically slow fire progression such as roads and timber sales. In addition, prolific spotting has been sending embers well in advance of the fire’s front. The active behavior of the Mullen Fire is increasing smoke impacts to southern Wyoming and northern Colorado. An Air Resource Advisor is on the site to predict and measure smoke impacts and share that information with the public, the incident management team, and air quality regulators.

Mandatory Evacuations: 

Multiple evacuations and pre-evacuations are in place. See the Albany County Sheriff Office (WY) and Jackson County Sheriff’s Office (CO) Facebook pages for the most current list.

Road closures

Road status can quickly change in response to fire conditions. For the most current information on Wyoming and Colorado road closures, please see  and

No estimate is available about reopening of these roads.

Forest area closure

A Forest area closure is in effect surrounding the Mullen Fire for public safety. See the new Forest Closure Order at and the new Forest Closure Area Map at 

Stage 2 Fire Restrictions in effect for the Fire Area

Medicine Bow-Routt National Forests and Thunder Basin National Grassland: 

Albany County:

Temporary Flight Restriction 

A Temporary Flight Restriction is in effect for the fire area:

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