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Active

Sisi

Chelan, WA · Natural

Crews have this fire 75% contained. Nearby public lands are likely open, but check for lingering closures.

0%Near Contained

4,816

Acres Burned

87

Days Burning

Aug 14, 2026

Discovered

6h ago

Last Update

Growth

No growth in the last day, containment at 75%
Aug 14 / 1 acresNov 9 / 4,816 acres

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Threatened Public Lands

12 public land units within 75 miles

Lake Chelan National Recreation Area

Avoid

Recreation Area / WA

6.7 mi

E

Glacier Peak Wilderness

Check first

Wilderness / WA

13.3 mi

SW

Lake Chelan-Sawtooth Wilderness

Check first

Wilderness / WA

16.1 mi

E

Stephen Mather Wilderness Area

Go

Wilderness / WA

27.8 mi

NW

Okanogan National Forest

Go

National Forest / WA

29.2 mi

NE

Golden Phoenix Purchase Unit

Check first

National Forest / WA

30.2 mi

NW

Illabot Creek Purchase Unit

Check first

National Forest / WA

30.3 mi

W

North Cascades National ParkClosures in effect

Closed

National Park / WA

30.5 mi

NW

Mt. Baker National Forest

Check first

National Forest / WA

31.7 mi

W

Ross Lake National Recreation Area

Go

Recreation Area / WA

32.6 mi

N

Henry M. Jackson Wilderness

Check first

Wilderness / WA

34.2 mi

SW

Skagit Purchase Unit

Check first

National Forest / WA

34.9 mi

W

Official Park Alerts

Closures and dangers published by the National Park Service

Park Closure / North Cascades National Park

Cascade River Road Closed for the Winter Season

Cascade River Road is closed at milepost 21 (Johnson Cabin) two miles before the trailhead. Cascade River Road usually opens in mid-summer depending on snow and road damage. Do not block gate. Foot and bicycle traffic is permitted beyond th...

Official notice

Park Closure / North Cascades National Park

Hozomeen Gate Remains Closed

Until further notice, the gate at Hozomeen will remain closed; vehicle and foot traffic across the US/Canada border is prohibited. Visitors must enter through a designated port of entry.

Official notice

Park Closure / North Cascades National Park

Fire Closures - Trail, Area, and Camp Closures

For closures due to fire activity visit the Fire Closures page, including trail, area, and camp closures for current and post fire conditions.

Official notice

Situation Updates

Posted by the incident management team on InciWeb, plus changes read from NIFC interagency perimeter data

SISI update: 4,816 acres, 75% contained

Perimeter data
Nov 9

Per interagency perimeter data, the SISI containment moved from 65% to 75%.

IRWIN

SISI update: 4,816 acres, 65% contained

Perimeter data
Nov 8

Per interagency perimeter data, the SISI containment moved from 60% to 65%.

IRWIN

SISI update: 4,816 acres, 60% contained

Perimeter data
Nov 7

Per interagency perimeter data, the SISI containment moved from 50% to 60%.

IRWIN

SISI update: 4,816 acres, 50% contained

Perimeter data
Nov 5

Per interagency perimeter data, the SISI containment moved from 45% to 50%.

IRWIN

SISI update: 4,816 acres, 45% contained

Perimeter data
Nov 4

Per interagency perimeter data, the SISI containment moved from 40% to 45%.

IRWIN

SISI update: 4,816 acres, 40% contained

Perimeter data
Oct 31

Per interagency perimeter data, the SISI grew 42 acres to 4,816 and containment moved from 35% to 40%.

IRWIN

SISI update: 4,774 acres, 35% contained

Perimeter data
Oct 29

Per interagency perimeter data, the SISI grew 31 acres to 4,774 and containment moved from 34% to 35%.

IRWIN

SISI update: 4,743 acres, 34% contained

Perimeter data
Oct 19

Per interagency perimeter data, the SISI grew 128 acres to 4,743.

IRWIN

SISI update: 4,615 acres, 34% contained

Perimeter data
Oct 14

Per interagency perimeter data, the SISI grew 21 acres to 4,615.

IRWIN

Actualización del incendio Little Giant y Sisi 10-13-2026

Incident team
Oct 13

Incendio Sisi—Tamaño: 4,615 acres | Inicio: 14 de agosto de 2026 | Causa: Rayos | Contención: 34% Incendio Little Giant—Tamaño: 172,912 acres | Inicio: 15 de julio de 2026 | Cause: Rayos | Contención: 95% Recursos: 1 vehículos; 1 cuadrillas; 13 equipos pesados; 12 camiones cisterna; 2 helicópteros; 222 personal Hoy a las 7:00 p. m., la gestión de los incendios Little Giant y Sisi pasará del equipo...

InciWeb

Little Giant and Sisi Fires Daily Update 10-13-2026

Incident team
Oct 13

Little Giant and Sisi Fires Northwest Team 12 Oct. 13, 2026 Fire Information: (509) 776-6953, 8 AM - 8 PM Sisi Fire—Size: 4,615 acres | Start Date: August 14, 2026 | Cause: Lightning | Containment: 34% Little Giant Fire—Size: 172,912 acres | Start Date: July 15, 2026 | Cause: Lightning | Containment: 95% Total Resources: 1 engine; 1 crew; 13 heavy equipment; 12 water tenders; 2 helicopters; 222 pe...

InciWeb

SISI update: 4,594 acres, 34% contained

Perimeter data
Oct 13

Per interagency perimeter data, the SISI grew 155 acres to 4,594.

IRWIN

Actualización del incendio Little Giant y Sisi 10-12-2026

Incident team
Oct 12

Incendio Sisi—Tamaño: 4,594 acres | Inicio: 14 de agosto de 2026 | Causa: Rayos | Contención: 34% Incendio Little Giant—Tamaño: 172,906 acres | Inicio: 15 de julio de 2026 | Causa: Rayos | Contención: 95% Recursos: 4 vehículos; 1 cuadrilla; 13 equipos pesados; 12 camiones cisterna; 2 helicópteros; 222 personal INCENDIO SISI : Ayer, los bomberos utilizaron un helicóptero pesado para descargar más d...

InciWeb

Little Giant and Sisi Fires Daily Update 10-12-2026

Incident team
Oct 12

Little Giant and Sisi Fires Northwest Team 12 Oct. 12, 2026 Fire Information: (509) 776-6953, 8 AM - 8 PM Sisi Fire—Size: 4,594 acres | Start Date: August 14, 2026 | Cause: Lightning | Containment: 34% Little Giant Fire—Size: 172,906 acres | Start Date: July 15, 2026 | Cause: Lightning | Containment: 95% Total Resources: 4 engines; 1 crew; 13 heavy equipment; 12 water tenders; 2 helicopters; 222 p...

InciWeb

Actualización del incendio Little Giant y Sisi 10-11-2026

Incident team
Oct 11

Incendio Sisi—Tamaño: 4,439 acres | Inicio: 14 de agosto de 2026 | Causa: Rayos | Contención: 34% Incendio Little Giant—Tamaño: 172,906 acres | Inicio: 15 de julio de 2026 | Causa: Rayos | Contención: 95% Recursos: 4 vehículos; 1 cuadrillas; 11 equipo pesado; 14 camiones cisterna; 2 helicópteros; 230 personal INCENDIO SISI : La actividad del incendio se mantuvo moderada ayer en las zonas de Agnes ...

InciWeb

Timeline

Aug 14Now

87 days since discovery

Other Fires in WA

4 additional active fires

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: dc4342d9-b479-44f1-906c-8abd42e1f59c

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.