Porcupine Fire

Perimeter mapped August 18, 2026 at 4:15 AM PDT, 175 acres (ir image interpretation). Point of origin 48.251, -116.149.

Live radar at the fire Forecast for Clark Fork

Size

177 acres

Containment

100%

Discovered

July 24, 2026 at 7:25 PM PDT

Cause

Natural

Location

7 Miles N from Clark Fork, ID

County

Bonner County

State

Idaho

Nearest city reported

Clark Fork

Protecting agency

USFS

Jurisdiction

USFS

Land ownership at origin

USFS

Personnel assigned

2

Incident management

Type 5 IC, Type 4 Incident

Primary fuel

Timber (Litter and Understory)

Estimated cost to date

$430,000

Incident type

Wildfire

Unique fire identifier

2026-IDIPF-000495

IRWIN identifier

1D2500F1-9401-4668-8EEC-82D9181E4193

Mapped area at the last perimeter of each day, from August 6, 2026 (10 acres) to August 27, 2026 (175 acres). The largest one-day growth was 65 acres, mapped August 7, 2026.

• Wind up to 7 mph from the southwest
• Relative humidity as low as 56%
• High of 65°F

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

Full forecast for Clark Fork, ID

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 2.1 µg/m³ around Tue, 9:00 PM PDT over the next 48 hours.

Smoke and fire layers on the radar

• Clark Fork, ID7 miles south of the fire’s origin
• Ponderay, ID18 miles west of the fire’s origin
• Sandpoint, ID19 miles west of the fire’s origin
• Libby, MT29 miles east of the fire’s origin
• Bonners Ferry, ID31 miles north of the fire’s origin
• Priest River, ID35 miles west of the fire’s origin