Wyoming · incident record
Lumin Fire, Wyoming
7,285
Acres reported
100%
Contained
0
Acres since yesterday
Last updated · refreshed every 15 minutes from the NIFC WFIGS feed · awareness only — follow local authorities
Update ·
As of Sep 7, 2026, 01:45 UTC, the Lumin Fire is no longer listed in the federal active-fire feed at 7,285 acres, 100% contained, in Sheridan County, Wyoming.
No change in reported size or containment since Sep 6, 2026, 01:30 UTC.
The most recent mapped perimeter (Aug 3, 2026, 01:13 UTC) covers 7,285 acres; the mapped perimeter has been updated 4 times since the fire began.
No satellite heat detections matched to this incident in the last 24 hours (last one Aug 1, 2026, 21:11 UTC).
It was last present in the feed Sep 7, 2026, 01:45 UTC; the largest size reported was 7,285 acres. This page stays up as a record of the incident.
Lumin Fire map
The most recent mapped perimeter (solid) and the previous day's perimeter (dashed), with the reported point of origin.
Latest perimeter Previous perimeter · Perimeters come from the WFIGS interagency perimeter service and are usually mapped once a day; the mapped area can differ from the reported acreage.
Key facts
- Size
- 7,285 acres
- Containment
- 100%
- Status
- Not in feed (last seen Sep 7, 2026)
- Discovered
- Jul 31, 2026
- Location
- Sheridan County, Wyoming
- Origin point
- 44.8235, -106.4085
- Perimeter mapped
- Aug 3, 2026 (60 days ago)
- Satellite heat, 24 h
- none matched
Nearest towns
Distances are from the reported point of origin, not from the fire’s edge (see the perimeter map for the current extent).
- Sheridan, WY
- Buffalo, WY
- Lame Deer, MT
- Gillette, WY
Other fires nearby
- Kelty Fire
Lumin Fire timeline
Day by day: the largest size and containment reported each UTC day, from our 15-minute archive of the federal feed (first seen Jul 31, 2026, 22:00 UTC).
| Day (UTC) | Reported size | Change | Contained |
|---|---|---|---|
| Sep 7, 2026 | 7,285 acres | 0 | 100% |
| Sep 6, 2026 | 7,285 acres | 0 | 100% |
| Sep 5, 2026 | 7,285 acres | 0 | 100% |
| Sep 4, 2026 | 7,285 acres | 0 | 100% |
| Sep 3, 2026 | 7,285 acres | 0 | 100% |
| Aug 22, 2026 | 7,285 acres | 0 | 100% |
| Aug 21, 2026 | 7,285 acres | 0 | 100% |
| Aug 20, 2026 | 7,285 acres | 0 | 100% |
| Aug 19, 2026 | 7,285 acres | 0 | 100% |
| Aug 18, 2026 | 7,285 acres | 0 | 100% |
| Aug 17, 2026 | 7,285 acres | 0 | 100% |
| Aug 16, 2026 | 7,285 acres | 0 | — |
| Aug 15, 2026 | 7,285 acres | 0 | — |
| Aug 14, 2026 | 7,285 acres | 0 | — |
| Aug 13, 2026 | 7,285 acres | 0 | — |
| Aug 12, 2026 | 7,285 acres | 0 | — |
| Aug 11, 2026 | 7,285 acres | 0 | — |
| Aug 10, 2026 | 7,285 acres | 0 | — |
| Aug 9, 2026 | 7,285 acres | 0 | — |
| Aug 8, 2026 | 7,285 acres | 0 | — |
| Aug 7, 2026 | 7,285 acres | 0 | — |
| Aug 6, 2026 | 7,285 acres | 0 | — |
| Aug 5, 2026 | 7,285 acres | 0 | — |
| Aug 4, 2026 | 7,285 acres | 0 | — |
| Aug 3, 2026 | 7,285 acres | +65 | — |
| Aug 2, 2026 | 7,220 acres | +20 | — |
| Aug 1, 2026 | 7,200 acres | +5,200 | — |
| Jul 31, 2026 | 2,000 acres | — | — |
Get an email when a new fire starts near you
Free. One email per new fire within the distance you choose of the address you pick. Unsubscribe with one click. Not an emergency service — always follow local authorities.
Responsible for more than a few addresses?
FireRiskHere Watch monitors a whole portfolio — rentals, an HOA, a book of business — and alerts you by distance when a new fire is reported.
Lumin Fire questions, answered from the data
How big is the Lumin Fire?
As of Sep 7, 2026, 01:45 UTC, the Lumin Fire is reported at 7,285 acres. No change in reported size or containment since Sep 6, 2026, 01:30 UTC.
Is the Lumin Fire contained?
Yes — the Lumin Fire was reported 100% contained as of Sep 7, 2026, 01:45 UTC. Containment means a control line surrounds the fire; interior areas can keep burning for days.
Where is the Lumin Fire?
The reported point of origin is at 44.8235, -106.4085 in Sheridan County, Wyoming. Nearest towns: Sheridan (27 mi W), Buffalo (36 mi SW), Lame Deer (57 mi N). The map on this page shows the most recent mapped perimeter.
Is the Lumin Fire still burning?
It is no longer in the federal active-fire feed; it was last listed Sep 7, 2026, 01:45 UTC. Fires drop out of the feed when the incident is closed or handed to local management, not necessarily when every ember is out.
What is the timeline of the Lumin Fire?
The Lumin Fire was first listed in the federal feed Jul 31, 2026, 22:00 UTC (reported discovery date Jul 31, 2026). It was last listed Sep 7, 2026, 01:45 UTC, after peaking at 7,285 acres. The timeline table on this page shows the size and containment reported each UTC day across 28 days of archive.
Where do I find evacuation orders for the Lumin Fire?
From the county sheriff and local emergency management, not from this site. Check the official Wyoming sources on our Wyoming page and your county’s alert system. FireRiskHere is for awareness only.
How current is this page?
The numbers come from the National Interagency Fire Center's WFIGS incident feed and the WFIGS perimeter service, refreshed every 15 minutes, plus NASA FIRMS satellite detections hourly. This page was last updated Sep 7, 2026, 01:45 UTC. Acreage and containment are what the incident team reports and can lag by hours.
About this page
This page is generated automatically for every wildfire whose reported size reaches 1,000 acres, from FireRiskHere’s archive of the National Interagency Fire Center’s WFIGS incident feed (captured every 15 minutes), the WFIGS interagency perimeter service, and NASA FIRMS satellite detections. It stays online after the fire is contained as a record of the incident. Nothing here is an official notice — for evacuation orders and road closures follow your county sheriff and local emergency management. How the site works →