"This fire demonstrates a rapid containment response, with 100% containment achieved within 20 days despite moderate early behavior and significant personnel deployment. The escalating estimated cost reflects the resources required for a natural wildfire of this size in a remote area."
The Ant Park wildfire, located 15 miles northeast of White Sulphur Springs in Meagher County, Montana, was discovered on July 31, 2026 and is a natural fire under USFS jurisdiction. The fire grew from 386 acres on August 6 to 400 acres by August 7, remaining steady thereafter while containment increased from 27% to 100% by August 26. Personnel peaked at 229 on August 8 and declined to 4 by the final report, with estimated costs rising from $2.8 million to $6.36 million. Fire behavior shifted from moderate flanking and backing to minimal creeping and smoldering as containment progressed. The incident was fully contained on August 26, 2026.
Official source description: 15 Miles NE from White Sulphur Springs, MT
Minimal; Smoldering; Creeping
Good air quality. Outdoor activity is generally safe near this incident.
Nearest reporting station: Lewistown. Source: AirNow.gov (EPA).
The fire is now fully contained and poses no immediate threat. General wildfire safety guidance still applies in the surrounding area.
IRWIN ID: {0910A9E1-186B-4DA3-8ECB-75028DCC057F}
Discovered: Jul 31, 2026
Cause: Natural
Managing Agency: USFS
Est. Cost to Date: $6,364,076
Coordinates: 46.7365, -110.6397
Other wildfires that have recently been contained or dropped from official tracking in MT.
The Ant Park Fire has burned 400 acres as of August 26, 2026.
Yes, the Ant Park Fire is fully contained (100%).
The official cause has been listed as: Natural.
The Ant Park Fire is burning in Meagher, MT.
No, the Ant Park Fire is no longer listed as active by NIFC.
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