Upper Smith Fire Expands in Northern Idaho
A lightning-sparked wildfire burning in northern Boundary County has grown to approximately 567 acres as firefighting crews escalate suppression operations in challenging terrain northwest of Bonners Ferry. The Upper Smith Fire, ignited overnight between July 7 and 8, was reported on July 8, 2026, and remains uncontained as of Wednesday morning.
Located roughly 6 miles west of Porthill and 20 miles northwest of Bonners Ferry, the fire is consuming a north-facing slope characterized by steep, rugged terrain with large fallen timber and dense forest canopy. The difficult landscape has complicated firefighting efforts, but crews are leveraging recent resource additions to pursue more aggressive containment strategies.
Firefighting Resources and Strategy Expand
Incident management officials have ordered a complex incident management team to assume command Friday morning, signaling an expansion of the firefighting response. As of Wednesday, 40 firefighters are assigned to the blaze, including a Hotshot crew, two hand crews, engines, heavy machinery, and aviation support with helicopters equipped with water buckets ranging from 800 to 2,600 gallons.
Crews are constructing containment lines on multiple fronts. Along the southwest corner, firefighters are building indirect and direct lines from U.S. Forest Service Road 635 down an avalanche chute toward USFS Road 2443. An excavator is simultaneously carving a defensive line from USFS Road 635 eastward toward the ridge, while handline construction continues on the north side of USFS Road 281 near a drainage mouth.
Mitchell Prophet, an incident official, stated that “we’re looking at opportunities to go direct where we can,” reflecting the shift in tactics. “Right now we are in full suppression,” he added, indicating the transition from initial containment efforts to comprehensive fire suppression across the entire perimeter.
Structure Protection and Weather Factors
Ten critical structures in the fire’s path have been protected with sprinkler lines and pump systems, which crews test daily to ensure functionality. This defensive infrastructure provides an additional safety margin as the fire continues to spread across the uncontained acreage.
A weather inversion over the area has moderated fire behavior, slowing the rate of spread. However, the inversion’s duration remains uncertain, and fire officials are proceeding with full suppression protocols to capitalize on the temporary conditions and prevent rapid expansion if atmospheric conditions shift.
Additional firefighting resources are expected to arrive Wednesday morning, further bolstering the crew count and equipment available for suppression work. The transition to a complex incident management team on Friday is standard protocol for large wildfires and signals that fire officials anticipate extended suppression operations.
What Comes Next
The Upper Smith Fire illustrates the ongoing wildfire threat across northern Idaho during lightning season. As crews continue construction of containment lines and prepare for the incident management team takeover, weather conditions and terrain will remain critical factors in determining the speed of suppression. Residents in the surrounding Boundary County area should monitor official updates from fire management agencies and remain alert to potential evacuation orders if fire behavior changes.
Bonner County has faced similar significant fire activity in recent weeks, including lightning-sparked fires in the Porthill area. Regional firefighting resources are stretched across multiple incidents, underscoring the importance of coordinated incident management during peak fire season.