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Cooper Fire (Idaho)

Ended · 0% containedCrews stopped it spreading on 0% of the perimeter. Not the same as out, and not 0% burned. · 310 acres (125 hectares) · Started · Updated

This fire in numbers19 days
125Hectares310Acres19Days it lasted
Containment0%

Started on Aug 25, 2026.

United States todayLive
107Active491Hotspots 48h1.4 MHectares
Last 7 days · steadyHow many named wildfires were burning on each of the last 7 days. It rises when there are more than on the earlier days.
All United States wildfires
Cooper Fire (Idaho) — Sentinel-2 true color Cooper Fire (Idaho) — Sentinel-2 SWIR (fuego) True view Fire view
True view (left): as the eye sees it.
Fire view (right): infrared (SWIR), sees through smoke and brings out the heat.

🟢 green = vegetation
🟤 brown = already burned
🟠 orange = fire right now

Drag to compare: normal photo on the left, heat brought out on the right.

Green: vegetationBrown: already burnedOrange: fire right nowSentinel-2 · Copernicus

Red dots: heat detected by satellite in the last 48h. NASA FIRMS

Quick facts

Location
22 miles southwest of Conner, MT
Cause
Natural
People working on it
1 people
Complexity
Type 4 IncidentOfficial scale from 5 to 1: a Type 1 is the most complex in the country.
What's burning
Timber (Litter and Understory)
How it's behaving
MinimalSmoldering — Burning without flame, in the ground or in roots. Can flare up days later.Backing — Moves against the wind or downhill, which makes it slower.
Jurisdiction
USFS · Federal land
Glossary: what each term means
Minimal

Barely moving. Low, thin smoke.

Smoldering

Burning without flame, in the ground or in roots. Can flare up days later.

Creeping

Moves slowly, hugging the ground.

Moderate

Spreads with low, steady flames.

Active

Spreading evenly and steadily, with visible flame.

Extreme

Fast and unpredictable.

Running

Runs along the ground much faster than a person walks.

Flanking

Grows along the sides, not head-on.

Backing

Moves against the wind or downhill, which makes it slower.

Crowning

Climbs into the treetops and jumps crown to crown. It can't be attacked from the ground.

Short Crown Runs

Climbs into the crowns in bursts and drops back down.

Torching

Whole trees flaring up like torches.

Isolated Torching

Single scattered trees flaring up whole, like torches.

Group Torching

Whole clumps of trees flaring at once.

Spotting

Wind carries embers through the air and starts new fires ahead of the front: that is how a fire jumps a road or a firebreak.

Wind Driven Runs

The wind pushes it in long runs in one direction.

The ones marked are the behaviors that make a fire harder to stop. They are not a warning or an instruction: they are the description written by the agency in charge. For decisions, always follow your emergency services.

Burning for eight days across federal timberland in Idaho, the active Cooper Fire has expanded at an average daily growth of approximately 39 acres per day, reaching 310 acres while remaining zero percent contained. Located 22 miles southwest of Conner, Montana, within Idaho County, the natural-cause fire exhibits moderate, flanking, and backing behavior in timber litter and understory fuels.

Satellites have detected six heat signatures near the fire perimeter over the past 48 hours, illustrating the extent of the spread. A Type 4 Incident managed by a Type 4 Incident Commander has deployed a lone personnel member under the direction of the USFS, with total accumulated costs reaching $1,000.

This incident unfolds during the region's typical fire season, which spans from June to October. Nationally, the broader context reveals that 3,169,257 hectares have burned across the country so far in 2026, marking a figure that is 42% below the two-decade average.

In context

This wildfire burned in Idaho for 18 days. In total it burned about 310 acres — around 1.3 km².

In the Northern Hemisphere, wildfire activity usually peaks during the warm, dry months — roughly May through October.

The bigger picture in United States

Across United States, roughly 3,226,886 hectares have burned so far in 2026 — 41% below the two-decade average. Data from Copernicus GWIS.

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