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Black Mountain

Unit Information

Beaverhead-Deerlodge National Forest
U.S. Forest Service
420 Barrett St
Dillon, MT 59725

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Alder Creek, Christensen, Trail Creek and Blck Mtn Update 8.18.21

Black Mountain Wildfire
News – 8/18/2021

Alder Creek, Trail Creek, Christensen, and Black Mountain
Fire Update
August 18, 2021


An open house meeting is scheduled for Jackson today from 5-7pm at the VFD. Contact Public Information for more information.


Alder Creek
Size: 13,984 Acres
Containment: 10%
Location: 7 miles west of Wise River, MT
Start Date: July 8, 2021
Cause: Unknown
Total personnel: 281

Trail Creek
Size: 38,845 Acres
Containment: 26%
Location: 20 miles west of Wisdom, MT
Start Date: July 8, 2021
Cause: Lightning
Total personnel: 254

Size: 11,012 Acres
Containment: 10%
Location: 12 miles west of Wise River, MT
Start Date: July 16, 2021
Cause: Unknown
Total personnel: 33

Black Mountain
Size: 1,042 Acres
Containment: 90%
Location: 13 miles south of Jackson, MT
Start Date: July 17, 2021
Cause: Lightning
Total personnel: 11

Smoke, cloud cover, and overnight rainfall limited fire behavior across the area with minimal fire spread. Suppression efforts today will be weather dependent with mainly patrol and mop up to take advantage of moist and cool conditions. Fire growth is expected to be minimal through Thursday. Overnight IR flight was not conducted due to clouds and precipitation.

Alder Creek Fire: Crews continue to patrol and monitor containment lines near Highway 43 and the scenic byway. Structure protection is in place and pumps and sprinklers are routinely tested. Logging operations continued to remove downed trees from surrounding roads.

Christensen Fire: Crews took advantage of the weather conditions to continue reinforcing and extending control lines on the west and northwest side of the fire. These defensive lines near Highway 43 are now complete. Constructing control lines along the fire’s edge on the south side of the fire is ongoing.

Trail Creek Fire: Aircraft dropped water onhot spots that remained in areas north of the Big Hole Battlefield. The fire spread north and west around Battle Mountain and into wet meadow barriers and grassy flats. Heat remains in the Gory Creek drainage with a little movement to the south and structure protection is in place. Burnout operations were conducted between Nez Perce and 3 Mile Creeks to reinforce firelines along Gibbonsville Rd. Firefighters are positioned between Gibbonsville and Three Mile Creek and will patrol, monitor and suppress approaching fire as needed. 

Black Mountain Fire: No fire activity has been reported for nearly two weeks now. About one mile of debris chipping along Snowshoe Hare Rd remains. Chipping operations along Forest Service Road 7335 are complete and resources will be reassigned to other fires. Crews continue to patrol and monitor the fire perimeter.

Fire Weather Today: Much cooler temperatures and very high relative humidity combined with overnight precipitation of around a tenth of an inch has resulted in minimal fire behavior.  Additional precipitation of up to a quarter of an inch is expected today resulting in minimal fire behavior and growth. Cool temperatures and high relative humidity will persist through Thursday.

Major Closures:
-Hwy 43 and Pioneer Byway remain open. Motorists are asked to slow down and be on the alert for firefighters, heavy smoke, and downed trees. Please check the Montana DOT Road Report website for current conditions.
-Continental Divide Trail: Closed from Lemhi Pass north to Mussigbrod Creek.
-Big Hole National Battlefield is closed until further notice. North and South VanHouten, Miner Lakes, Twin Lakes, May Creek and Divide Bridge Campgrounds are closed.
-Forest Closure orders in the Beaverhead-Deerlodge and Salmon-Challis National Forests are in effect for all three fires.
Stage 2 Fire Restrictions are in effect for SW Montana 
Stage 1 Fire Restrictions are in effect for Central ID

Stage 1 evacuation on Highway 43 from Mile Marker 35 to the County Line at Mile Marker 41.5. This includes the residents of Doolittle Creek Road and North Doolittle Creek Road. Southside of Highway 43 from Alder Creek Road to Dickie Bridge. Westside of the Scenic Byway from the Wisdom Airport to Harriette Lou Road. All evacuation statuses have been removed in Alder Creek drainage and Southside of Highway 43 from Alder Creek Road to Mile Marker 62. Lemhi County Sheriff has contacted residences in threatened areas on the west side of the Trail Creek Fire in Idaho and placed in “Set” evacuation status.
Evacuation Info: 208-756-8980.

Inciweb: For updates and additional incident information can be found at

Fire Information Line: 
406‐624‐9452 (8am‐8pm)

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