"The fire’s rapid growth to over 600 acres in a short period and the swift containment effort—reaching 100 % containment within 53 hours—highlight effective resource deployment and coordination. The incident’s human cause underscores ongoing wildfire prevention concerns."
The Salt Wells wildfire, located 28 miles southwest of Tremonton in Box Elder County, Utah, was first discovered on August 21, 2026, and is caused by human activity. The fire rapidly expanded from 400 acres at 12:20 UTC to 585 acres by 14:20 UTC on the same day, and remained at that size thereafter. By 22:40 UTC on August 21, containment reached 60 % with 45 personnel on the scene and the fire described as moderate and creeping. Containment improved to 90 % the following evening with only six personnel, and the fire was declared 100 % contained on August 24, 2026, with minimal creeping behavior. A final update on September 11 reports the fire at 602.79 acres, still fully contained, with the same minimal behavior and six personnel, and an estimated cost of $150,000.
Official source description: 28 Miles SW from Tremonton, UT
Minimal; Creeping
Good air quality. Outdoor activity is generally safe near this incident.
Nearest reporting station: Brigham City. Source: AirNow.gov (EPA).
The fire is currently minimal and fully contained; however, residents in the surrounding area should remain vigilant for any potential flare-ups and follow standard wildfire safety guidelines.
IRWIN ID: {862AFC47-2A5E-4145-8981-5B0107DE3560}
Discovered: Aug 21, 2026
Cause: Human
Est. Cost to Date: $150,000
Coordinates: 41.8095, -112.6778
Other wildfires that have recently been contained or dropped from official tracking in UT.
The Salt Wells Fire has burned 603 acres as of September 11, 2026.
Yes, the Salt Wells Fire is fully contained (100%).
The official cause has been listed as: Human.
The Salt Wells Fire is burning in Box Elder, UT.
Yes, as of the latest official update, the Salt Wells Fire remains active.
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