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Inactive

Big Mountain

Utah, UT · Natural

This fire is no longer active. It burned 166 acres in Utah before dropping off the national incident feed.

0%Inactive

166

Acres Burned

79

Days Burning

Aug 23, 2026

Discovered

3w ago

Last Update

Growth

No growth in the last day, containment at 100%
Aug 24 / 300 acresOct 17 / 166 acres

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Public Lands Nearby

12 public land units within 75 miles

Mount Nebo Wilderness

Go

Wilderness / UT

15.3 mi

E

Mount Timpanogos Wilderness

Go

Wilderness / UT

39.1 mi

NE

Timpanogos Cave National Monument

Go

Monument / UT

40.3 mi

NE

Uinta National Forest

Go

National Forest / UT

41.3 mi

NE

Lone Peak Wilderness

Go

Wilderness / UT

44.3 mi

N

Deseret Peak Wilderness

Go

Wilderness / UT

49.2 mi

NW

Twin Peaks Wilderness

Go

Wilderness / UT

50.1 mi

N

Mount Olympus Wilderness

Go

Wilderness / UT

54.1 mi

N

Cedar Mountain Wilderness Area

Go

Wilderness / UT

66.1 mi

NW

Wasatch National Forest

Go

National Forest / UT

69.7 mi

NE

Fish Springs National Wildlife Refuge

Go

Wildlife Refuge / UT

70.6 mi

W

Nelson Mountain Wilderness

Go

Wilderness / UT

74.5 mi

SE

Situation Updates

Changes read from NIFC interagency perimeter data

Big Mountain update: 166 acres, 90% contained

Perimeter data
Aug 29

Per interagency perimeter data, the Big Mountain containment moved from 80% to 90%.

IRWIN

Big Mountain update: 166 acres, 80% contained

Perimeter data
Aug 29

Per interagency perimeter data, the Big Mountain containment moved from 70% to 80%.

IRWIN

Big Mountain update: 166 acres, 70% contained

Perimeter data
Aug 28

Per interagency perimeter data, the Big Mountain containment moved from 50% to 70%.

IRWIN

Big Mountain update: 166 acres, 50% contained

Perimeter data
Aug 27

Per interagency perimeter data, the Big Mountain containment moved from 29% to 50%.

IRWIN

Big Mountain update: 166 acres, 29% contained

Perimeter data
Aug 26

Per interagency perimeter data, the Big Mountain containment moved from 10% to 29%.

IRWIN

Big Mountain update: 166 acres, 10% contained

Perimeter data
Aug 25

Per interagency perimeter data, the Big Mountain was remapped 234 acres lower to 166 and containment moved from 0% to 10%.

IRWIN

Big Mountain update: 400 acres, 0% contained

Perimeter data
Aug 24

Per interagency perimeter data, the Big Mountain grew 100 acres to 400.

IRWIN

Big Mountain mapped at 300 acres

Perimeter data
Aug 24

Interagency perimeter data shows the Big Mountain at 300 acres.

IRWIN

Timeline

Aug 23Now

79 days since discovery

Other Fires in Utah

No other fire is burning in the state right now

Utah wildfire map: every fire burning in the state and the past year's fires. Planning a trip? Utah national parks guide.

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: e3068d39-8514-4d2a-9ec5-e2161cb7d74b

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.