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Inactive

Twin Sisters

Walla Walla, WA · Human

This fire is no longer active. It burned 8,262 acres in Walla Walla before dropping off the national incident feed.

0%Inactive

8,262

Acres Burned

150

Days Burning

Jun 14, 2026

Discovered

2mo ago

Last Update

Growth

No growth in the last day, containment at 100%
Jun 15 / 3,638 acresSep 7 / 8,262 acres

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Public Lands Nearby

10 public land units within 75 miles

Mcnary National Wildlife Refuge

Avoid

Wildlife Refuge / WA

5.6 mi

N

Cold Springs National Wildlife Refuge

Check first

Wildlife Refuge / OR

17.3 mi

SW

Juniper Dunes Wilderness Area

Check first

Wilderness / WA

23.2 mi

N

Umatilla National Wildlife Refuge

Check first

Wildlife Refuge / OR

34.6 mi

W

North Fork Umatilla Wilderness

Avoid

Wilderness / OR

43.7 mi

SE

Hanford Reach National Monument

Check first

Monument / WA

48.1 mi

NW

Umatilla National Forest

Check first

National Forest / OR

54 mi

S

Wenaha-Tucannon Wilderness

Check first

Wilderness / WA

59.3 mi

E

Columbia National Wildlife Refuge

Check first

Wildlife Refuge / WA

61.3 mi

N

Toppenish National Wildlife Refuge

Go

Wildlife Refuge / WA

72.8 mi

W

Situation Updates

Changes read from NIFC interagency perimeter data

TWIN SISTERS mapped at 8,262 acres, 100% contained

Perimeter data
Jul 1

Interagency perimeter data shows the TWIN SISTERS at 8,262 acres, 100% contained.

IRWIN

Twin Sisters update: 8,116 acres, 65% contained

Perimeter data
Jun 17

Per interagency perimeter data, the Twin Sisters was remapped 146 acres lower to 8,116.

IRWIN

Twin Sisters update: 8,262 acres, 65% contained

Perimeter data
Jun 16

Per interagency perimeter data, the Twin Sisters containment moved from 0% to 65%.

IRWIN

Twin Sisters update: 8,262 acres, 0% contained

Perimeter data
Jun 15

Per interagency perimeter data, the Twin Sisters grew 4,625 acres to 8,262.

IRWIN

Timeline

Jun 14Now

150 days since discovery

Other Fires in Washington

5 other active fires

Washington wildfire map: every fire burning in the state and the past year's fires. Planning a trip? Washington 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: 40432b79-397f-4c30-8667-2dce4a76a6fe

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.