Cooper Fire

Perimeter mapped August 26, 2026 at 12:10 PM MDT, 354 acres (ir image interpretation). Point of origin 45.849, -114.569.

Live radar at the fire Forecast for Darby

Size

354 acres

Containment

100%

Discovered

August 25, 2026 at 10:26 AM MDT

Cause

Natural

Location

22 Miles SW from Conner, MT

County

Idaho County

State

Idaho

Protecting agency

USFS

Jurisdiction

USFS

Land ownership at origin

USFS

Personnel assigned

1

Incident management

Type 4 IC, Type 4 Incident

Primary fuel

Timber (Litter and Understory)

Estimated cost to date

$1,000

Incident type

Wildfire

Unique fire identifier

2026-MTBRF-000349

IRWIN identifier

63413076-55A2-4308-B77F-C8D04EAC9B51

Mapped area at the last perimeter of each day, from August 27, 2026 (74 acres) to September 14, 2026 (354 acres). The largest one-day growth was 281 acres, mapped September 14, 2026.

• Wind up to 5 mph from the southeast
• Relative humidity as low as 37%
• High of 67°F

National Weather Service hourly forecast for the fire’s point of origin, next 24 hours.

Full forecast for Darby, MT

Red Flag Warnings and Fire Weather Watches covering the fire's point of origin.

No Red Flag Warning or Fire Weather Watch is in force at the fire.

NOAA’s Hazard Mapping System analysts have not drawn smoke over the fire’s origin today.

NOAA’s smoke model forecasts near-surface smoke at the origin peaking at 0.3 µg/m³ around Sun, 4:00 PM MDT over the next 48 hours.

Smoke and fire layers on the radar

• Darby, MT22 miles northeast of the fire’s origin
• Hamilton, MT34 miles northeast of the fire’s origin
• Stevensville, MT51 miles northeast of the fire’s origin
• Salmon, ID57 miles southeast of the fire’s origin
• Lolo, MT67 miles north of the fire’s origin
• Orchard Homes, MT74 miles north of the fire’s origin