Bog Fire

Perimeter mapped September 15, 2026 at 1:16 PM CDT, 94 acres (mixed methods). Point of origin 46.132, -89.968.

Live radar at the fire Forecast for Mercer

Size

94 acres

Containment

Not reported

Discovered

September 12, 2026 at 5:57 PM CDT

Cause

Undetermined

County

Iron County

State

Wisconsin

Protecting agency

DNR

Jurisdiction

DNR

Land ownership at origin

State

Incident type

Wildfire

Unique fire identifier

2026-WIWIS-FIRE125349

IRWIN identifier

5F2CC625-5F19-45D5-86D6-110DBF3448BE

Mapped area at the last perimeter of each day, from September 14, 2026 (72 acres) to September 15, 2026 (94 acres). The largest one-day growth was 22 acres, mapped September 15, 2026.

• Wind up to 10 mph from the east
• Relative humidity as low as 40%
• High of 64°F

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

Full forecast for Mercer, WI

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 µg/m³ around Tue, 1:00 AM CDT over the next 48 hours.

Smoke and fire layers on the radar

• Mercer, WI5 miles northwest of the fire’s origin
• Lac du Flambeau, WI12 miles south of the fire’s origin
• Wakefield, MI24 miles north of the fire’s origin
• Ironwood, MI24 miles northwest of the fire’s origin
• Hurley, WI24 miles northwest of the fire’s origin
• Bessemer, MI24 miles north of the fire’s origin