Feed checks and source-record updates do not necessarily mean fire conditions changed. Figures below reflect the last recorded incident report.
The last recorded incident change is more than 14 days old or undated. Historical fire behavior and summaries below are not confirmation of current conditions.
Automated summary generated: Oct 9, 2026 18:12 UTC. It may lag behind the report and is not an official alert.
The Mill Run wildfire was discovered on September 17, 2026, near Box Elder County, Utah, at latitude 41.5705 and longitude -112.1020. Initial reports from the National Interagency Fire Center (NIFC) indicated the fire had burned 20 acres by 23:00 on the day of discovery, expanding to 33.29 acres by 00:20 the following morning. No official information is available regarding containment, personnel, fire behavior, weather conditions, evacuation actions, or estimated cost. The cause of the fire remains undetermined, and no jurisdictional agency has been identified. As of the latest update, the fireβs status and behavior are not publicly reported, so the situation remains uncertain.
Historical observations from incident reports, not a live forecast. Acreage and containment can decrease when agencies correct their estimates.
2
20 acres
33 acres
Latest available source report: Sep 18, 2026 00:20 UTC. This is the report date, not confirmation of current fire conditions.
Reported acreage increased by 13 acres between the first and last available acreage measurements.
| Report date (UTC) | Acres | Containment | Source |
|---|---|---|---|
| Sep 17, 2026 23:00 | 20 | Not reported | NIFC |
| Sep 18, 2026 00:20 | 33 | Not reported | NIFC |
| Report date (UTC) | Acres | Containment | Source |
|---|---|---|---|
| Sep 17, 2026 23:00 | 20 | Not reported | NIFC |
| Sep 18, 2026 00:20 | 33 | Not reported | NIFC |
Current air quality readings are unavailable for this incident. Older readings are not shown as current conditions.
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Verify evacuation orders, closures and access with the responsible fire agency, county emergency management or sheriff. A containment percentage, feed status or AQI reading does not establish that an area is safe to enter.
NIFC fire information and official resources βIRWIN ID: {2F042ADF-28AE-4BA5-BC0E-56EF826F290D}
Discovered: Sep 17, 2026
Cause: Undetermined
Coordinates: 41.5705, -112.102
Other wildfires no longer present in our filtered incident feed in UT.
The Mill Run Fire has burned 33 acres as of September 18, 2026.
Containment has not been officially reported for the Mill Run Fire.
The official cause has been listed as: Undetermined.
The Mill Run Fire is burning in Box Elder, UT.
The Mill Run Fire is no longer in our filtered incident feed. This alone does not confirm extinguishment.
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