Siwash Fire
The Siwash Fire was reported on July 31, 2025 in Okanogan County, Washington and burned 331 acres. It was declared out on September 13, 2025. The cause is listed as natural.
- Size
- 331 acres
- Contained
- 100%
- Discovered
- July 31, 2025
- Personnel
- 4
Map
Perimeter mapped December 30, 2025 at 10:57 AM PST, 362 acres (ir image interpretation). Point of origin 48.710, -119.212.
The incident
- Size
- 331 acres
- Containment
- 100%
- Discovered
- July 31, 2025 at 2:55 PM PDT
- Contained
- August 7, 2025 at 10:30 AM PDT
- Controlled
- August 7, 2025 at 11:05 AM PDT
- Declared out
- September 13, 2025 at 12:24 PM PDT
- Cause
- Natural
- Location
- 10 Miles E from Tonasket, WA
- County
- Okanogan County
- State
- Washington
- Nearest city reported
- Tonasket WA
- Protecting agency
- DNR
- Jurisdiction
- USFS
- Land ownership at origin
- USFS
- Personnel assigned
- 4
- Incident management
- Type 4 IC, Type 4 Incident
- Primary fuel
- Timber (Litter and Understory)
- Estimated cost to date
- $1,000,000
- Incident type
- Wildfire
- Unique fire identifier
- 2025-WANES-001936
- IRWIN identifier
- C1B471DE-0307-4BC1-9621-4908C2913F82
Growth
Mapped area at the last perimeter of each day, from August 1, 2025 (354 acres) to December 30, 2025 (362 acres). The largest one-day growth was 7 acres, mapped August 2, 2025.
| Day | Acres | Change |
|---|---|---|
| August 1, 2025 | 354 | |
| August 2, 2025 | 362 | +8 |
| August 4, 2025 | 362 | 0 |
| August 5, 2025 | 362 | 0 |
| December 30, 2025 | 362 | 0 |
Weather in the area
This fire is no longer listed as current. The forecast for Tonasket, WA covers the area today.
Nearby
Washington wildfires today Wildfires of 2025 All current fires
Incident record from the National Interagency Fire Center’s Wildland Fire Interagency Geospatial Services (WFIGS), as the incident’s managers report it; last updated December 30, 2025 at 10:57 AM PST. Identifier 2025-WANES-001936.