Wildfire near Unorganized Thunder Bay District (Jul 13 #3)

Active · 45,689 ha (112,900 acres) · started 2026-07-13 · updated 2026-07-17

True color Fire (SWIR)

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True color (left): as the eye sees it.
Infrared / SWIR (right): sees through smoke.

🟢 green = vegetation
🟤 red/brown = burned
🟠 orange = active fire

Imagery: Sentinel-2 (Copernicus). Drag to compare smoke vs. infrared.

Heat detections: NASA FIRMS (last 48h).

Expanding at a rapid pace of approximately 11,422 hectares per day, the wildfire near Unorganized Thunder Bay District, Ontario, has consumed 45,689 hectares since it ignited on July 13. Over its four days of activity, the blaze has maintained a significant footprint across the region.

Satellite monitoring via NASA FIRMS has identified 229 heat detections within the last 48 hours, highlighting the extensive spread of the fire front as it remains in an active state.