Alder Creek, Trail Creek, Christensen, and Black Mountain Fire Update 08/07/2021

Alder Creek

Size: 11,540 Acres

Containment: 10%

Location: 7 miles west of Wise River, MT

Start Date: July 8, 2021

Cause: Unknown

Total personnel: 380

Alder Creek Fire: Monitoring and securing line operations with structure protection and work towards containment will continue today. Crews and heavy equipment will also work to complete additional dozer line to strengthen strategic containment objectives. Firefighters will continue to identify additional preparation work along Highway 43 and locate areas for strategic burning. Relative humidity is predicted to stay in the lower 20% range.

Trail Creek

Size: 35,897 Acres

Containment: 23%

Location: 20 miles west of Wisdom, MT

Start Date: July 8, 2021

Cause: Lightning

Total personnel: 137

Trail Creek Fire: Prep work continues along the fire’s Southwest edge with fallers, crews and heavy equipment working in an area known as the switchbacks, near Gibbonsville Road corridor and Lost Trail. Structure and infrastructure protection continues to test planned mitigations in place. Patrolling operations in the area are ongoing. Construction of fire line continues using heavy equipment in identified areas near 3-mile creek and adjacent ridges that are still holding high heat, with intent to complete by end of shift today.


Size: 8,575 Acres

Containment: 0%

Location: 12 miles west of Wise River, MT

Start Date: July 16, 2021

Cause: Unknown

Total personnel: 18

Christensen Fire: Fire crews will continue to patrol and monitor line operations and structural protection to prevent impact to private property. Fuel breaks and handlines are being constructed to tie in dozer line. Montana National Guard has joined operations along the western flank and are cold trailing the perimeter. Resources will work to mitigate identified targets along the south side of the fire.

Black Mountain

Size: 1,042 Acres


Location: 13 miles south of Jackson, MT

Start Date: July 17, 2021

Cause: Lightning

Total personnel: 52

Black Mountain Fire: The Hotshot crews completed their operation and returned to the Alder and Christensen fires. A wildfire Module has been requested to monitor, patrol, and mop up the fire edge to ensure fire containment. Resources will continue to prepare alternate and contingency lines to ensure they are in place if there is fire movement in that area. Crews and Incident Management Team supervisors continue to evaluate the risk to personnel and resources to ensure the risks are at an acceptable level. Medical resources are posted at identified staging areas to respond to medical emergencies.