Lumin Fire (WY)

Active · 50% contained · 7,267 acres · started 2026-07-31 · updated 2026-08-03

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).

Burning across 7,267 acres of private land situated 22 miles east of Sheridan, Wyoming, in Sheridan County, the active Lumin Fire has maintained an average daily growth of approximately 2,422 acres per day over its three days of burning since starting on July 31, 2026.

Currently managed by a Type 3 Incident command team with 87 personnel assigned, the fire exhibits minimal, running, and flanking behavior through one-foot short grass fuels. Despite these active conditions, response efforts have achieved 50 percent containment at a cost of $750,000.

This incident unfolds during the region's typical fire season, which runs from June to October. Nationally, the broader wildfire context shows 2,528,284 hectares burned so far in 2026, marking a total that sits 54% below the two-decade average.

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