Lumin Fire

Sheridan County, Wyoming · Wildfire

No longer active Official numbers updated Aug 25, 2026 (21 days ago)

First reported about 7 weeks ago

Metric	Last report	Now	Change
Size	7,267 acres Aug 3, 6:00 PM	7,285 acres Sep 14, 11:00 PM +18 acres was 7,267 acres · Aug 3, 6:00 PM	+18 acres in about 1 month
Containment	93% Aug 4, 4:00 PM	100% Sep 14, 11:00 PM +7 percent was 93% · Aug 4, 4:00 PM	+7 percent in about 1 month
Crew size	22 Aug 4, 4:00 PM	4 Sep 14, 11:00 PM −18 was 22 · Aug 4, 4:00 PM	−18 in about 1 month
Money spent	$750,000 Aug 3, 6:00 PM	$1.1M Sep 14, 11:00 PM +$350,000 was $750,000 · Aug 3, 6:00 PM	+$350,000 in about 1 month

Lumin Fire summary

The Lumin Fire is a wildfire near Sheridan County, Wyoming. It has burned about 7,285 acres (about 6,000 football fields). Crews have it fully contained, with a line all the way around it. It was first reported about 7 weeks ago. About 4 people are on it, run by a Type 3 Team.

Size: 7,285 acres
Containment: 100%
Discovered: July 31, 2026 (first reported about 7 weeks ago)
Cause: Not reported

The size and containment above are current as of Tuesday, September 8th at 9:00 a.m. CDT.

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Weather & fire-spread conditions

No Red Flag Warning. The National Weather Service hasn't flagged this area for dangerous fire-spread conditions right now.

Hot, dry, and windy weather can help a fire grow; cool, calm, or wet weather helps crews. The tags below rate each day for fire spread — green is calm, red can push a fire.

A general fire-weather guide (wind matters most, then how dry it is, then heat), not a prediction of what this fire will do.

Today

75°F · Sunny

Wind 6 to 12 mph NW · 0% chance of rain

Wind: Breezy Heat: Warm Dry

Tonight

43°F · Mostly Clear

Wind 7 to 17 mph NW · 1% chance of rain

Wind: Breezy Heat: Cool Dry

Wednesday

77°F · Sunny

Wind 8 mph S · 0% chance of rain

Wind: Calm Heat: Warm Dry

Wednesday Night

45°F · Mostly Clear

Wind 5 mph W · 0% chance of rain

Wind: Calm Heat: Cool Dry

Thursday

88°F · Sunny

Wind 6 mph S · 0% chance of rain

Wind: Calm Heat: Warm Dry

Forecast from the National Weather Service (weather.gov), pulled Tuesday, September 8th at 9:01 a.m. CDT.

Who's on it

About 4 people are assigned to this fire, run by a Type 3 Team. The government rates it a Type 3 Incident. About $1 million has been spent on it so far.

The official feed reports the total headcount, not a breakdown by crew type.

Where to get live updates

We show the daily official picture. For minute-by-minute updates, evacuation orders, and maps, these do it best:

→ Watch Duty: real-time fire reporting and evacuations.
→ InciWeb: the government's official fire information site.

Nearby fires to Lumin Fire

No other active fires are near this one right now. It's on its own.

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