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Chalk Mountain

Carbon, WY · Undetermined

Crews have this fire 91% contained. Nearby public lands are likely open, but check for lingering closures.

0%Near Contained

124

Acres Burned

41

Days Burning

Aug 26, 2026

Discovered

1h ago

Last Update

Growth

No growth in the last day, containment at 91%
Aug 26 / 5 acresOct 6 / 124 acres

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Threatened Public Lands

2 public land units within 75 miles

Pathfinder National Wildlife Refuge

Check first

Wildlife Refuge / WY

24.4 mi

W

Medicine Bow National Forest

Go

National Forest / WY

67 mi

S

Situation Updates

Changes read from NIFC interagency perimeter data

Chalk Mountain update: 124 acres, 91% contained

Perimeter data
Aug 29

Per interagency perimeter data, the Chalk Mountain containment moved from 75% to 91%.

IRWIN

Chalk Mountain update: 124 acres

Perimeter data
Aug 27

Per interagency perimeter data, the Chalk Mountain grew 24 acres to 124.

IRWIN

Chalk Mountain update: 100 acres

Perimeter data
Aug 27

Per interagency perimeter data, the Chalk Mountain grew 50 acres to 100.

IRWIN

Chalk Mountain update: 50 acres

Perimeter data
Aug 26

Per interagency perimeter data, the Chalk Mountain grew 45 acres to 50.

IRWIN

Chalk Mountain mapped at 5 acres

Perimeter data
Aug 26

Interagency perimeter data shows the Chalk Mountain at 5 acres.

IRWIN

Timeline

Aug 26Now

41 days since discovery

Other Fires in WY

2 additional active fires

Spout Springs

Park, WY

2 acres

0%

Turtle Rock

Albany, WY

1 acres

0%

Data Sources

Fire data from NIFC Wildland Fire Interagency Geospatial Services (WFIGS) via IRWIN. Satellite hotspots from NASA FIRMS VIIRS. Situation updates are either posted by the incident management team on InciWeb or read by us from WFIGS perimeter data, and each one says which. Air quality data from EPA AirNow. Public lands boundaries from USGS PAD-US 4.0.

IRWIN ID: 037447d6-7823-4f82-9b3c-9d56082aa870

Important

More Than Just Parks aggregates third-party data from EPA AirNow, NOAA, NASA FIRMS, and NIFC/WFIGS. Readings can be delayed, estimated, incomplete, or wrong, and conditions on the ground change quickly. This tool is for general information only and is not a substitute for official air quality alerts, fire and evacuation orders, land manager closures, or emergency services. Verify with the managing agency and local authorities before making any travel, health, or safety decision. We make no warranty as to accuracy and accept no liability for decisions made using this information. This is not an emergency or evacuation tool. If you are near a fire, follow official evacuation orders and call 911. Terms of Service.