Washington · Active · 4,615 acres
Sisi Fire, Washington
4,615
Acres reported
34%
Contained
0
Acres since yesterday
Last updated · refreshed every 15 minutes from the NIFC WFIGS feed · awareness only — follow local authorities
Update ·
As of Oct 17, 2026, 23:45 UTC, the Sisi Fire is listed as active at 4,615 acres, 34% contained, in Chelan County, Washington.
No change in reported size or containment since Oct 16, 2026, 23:45 UTC.
The most recent mapped perimeter (Oct 13, 2026, 12:38 UTC) covers 4,615 acres; the mapped perimeter has been updated 60 times since the fire began.
Satellites (VIIRS/MODIS) registered 2 heat detections matched to this incident in the last 24 hours, the latest at Oct 17, 2026, 10:06 UTC.
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Sisi Fire map
The most recent mapped perimeter (solid) and the previous day's perimeter (dashed), with the reported point of origin.
Latest perimeter Previous perimeter · Perimeters come from the WFIGS interagency perimeter service and are usually mapped once a day; the mapped area can differ from the reported acreage.
Key facts
- Size
- 4,615 acres
- Containment
- 34%
- Status
- Active
- Discovered
- Aug 14, 2026
- Location
- Chelan County, Washington
- Origin point
- 48.3467, -120.8307
- Perimeter mapped
- Oct 13, 2026 (4 days ago)
- Satellite heat, 24 h
- 2 detections
Nearest towns
Distances are from the reported point of origin, not from the fire’s edge (see the perimeter map for the current extent).
- Darrington, WA
- Granite Falls, WA
- Manson, WA
- Chelan, WA
- Brewster, WA
Other fires nearby
- Little Giant Fire
- Electric Fire
- Luna Fire
- Ptarmigan Fire
- Border 2 Fire
Sisi Fire timeline
Day by day: the largest size and containment reported each UTC day, from our 15-minute archive of the federal feed (first seen Aug 14, 2026, 19:45 UTC).
| Day (UTC) | Reported size | Change | Contained |
|---|---|---|---|
| Oct 17, 2026 | 4,615 acres | 0 | 34% |
| Oct 16, 2026 | 4,615 acres | 0 | 34% |
| Oct 15, 2026 | 4,615 acres | 0 | 34% |
| Oct 14, 2026 | 4,615 acres | 0 | 34% |
| Oct 13, 2026 | 4,615 acres | +176 | 34% |
| Oct 12, 2026 | 4,439 acres | 0 | 34% |
| Oct 11, 2026 | 4,439 acres | 0 | 34% |
| Oct 10, 2026 | 4,439 acres | +19 | 29% |
| Oct 9, 2026 | 4,420 acres | +19 | 29% |
| Oct 8, 2026 | 4,401 acres | +16 | 29% |
| Oct 7, 2026 | 4,385 acres | +17 | 29% |
| Oct 6, 2026 | 4,368 acres | +16 | 29% |
| Oct 5, 2026 | 4,352 acres | 0 | 29% |
| Oct 4, 2026 | 4,352 acres | +9 | 29% |
| Oct 3, 2026 | 4,343 acres | 0 | 29% |
| Oct 2, 2026 | 4,343 acres | +13 | 29% |
| Oct 1, 2026 | 4,330 acres | 0 | 29% |
| Sep 30, 2026 | 4,330 acres | 0 | 29% |
| Sep 29, 2026 | 4,330 acres | +5 | 29% |
| Sep 28, 2026 | 4,325 acres | +20 | 15% |
| Sep 27, 2026 | 4,305 acres | 0 | 15% |
| Sep 26, 2026 | 4,305 acres | 0 | 15% |
| Sep 25, 2026 | 4,305 acres | +147 | 15% |
| Sep 24, 2026 | 4,158 acres | +165 | 15% |
| Sep 23, 2026 | 3,993 acres | +85 | 15% |
| Sep 22, 2026 | 3,908 acres | +177 | 15% |
| Sep 21, 2026 | 3,731 acres | 0 | 15% |
| Sep 20, 2026 | 3,731 acres | 0 | 15% |
| Sep 19, 2026 | 3,731 acres | +40 | 15% |
| Sep 18, 2026 | 3,691 acres | 0 | 15% |
| Sep 17, 2026 | 3,691 acres | +242 | 15% |
| Sep 16, 2026 | 3,449 acres | 0 | 5% |
| Sep 15, 2026 | 3,449 acres | +256 | 5% |
| Sep 14, 2026 | 3,193 acres | 0 | 5% |
| Sep 13, 2026 | 3,193 acres | +139 | 11% |
| Sep 12, 2026 | 3,054 acres | +242 | 11% |
| Sep 11, 2026 | 2,812 acres | +48 | 11% |
| Sep 10, 2026 | 2,764 acres | +16 | 11% |
| Sep 9, 2026 | 2,748 acres | +227 | 11% |
| Sep 7, 2026 | 2,521 acres | 0 | 11% |
| Sep 6, 2026 | 2,521 acres | +277 | 11% |
| Sep 5, 2026 | 2,244 acres | 0 | 11% |
| Sep 4, 2026 | 2,244 acres | 0 | 11% |
| Sep 3, 2026 | 2,244 acres | +1,366 | 5% |
| Aug 25, 2026 | 878 acres | +77 | 0% |
| Aug 24, 2026 | 801 acres | +67 | 0% |
| Aug 23, 2026 | 734 acres | +156 | 0% |
| Aug 22, 2026 | 578 acres | +72 | 0% |
| Aug 21, 2026 | 506 acres | +506 | 0% |
| Aug 20, 2026 | 0.5 acres | 0 | — |
| Aug 19, 2026 | 0.5 acres | 0 | — |
| Aug 18, 2026 | 0.5 acres | 0 | — |
| Aug 17, 2026 | 0.5 acres | 0 | — |
| Aug 16, 2026 | 0.5 acres | 0 | — |
| Aug 15, 2026 | 0.5 acres | 0 | — |
| Aug 14, 2026 | 0.5 acres | — | — |
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Sisi Fire questions, answered from the data
How big is the Sisi Fire?
As of Oct 17, 2026, 23:45 UTC, the Sisi Fire is reported at 4,615 acres. No change in reported size or containment since Oct 16, 2026, 23:45 UTC.
Is the Sisi Fire contained?
Not fully. It was 34% contained as of Oct 17, 2026, 23:45 UTC. Containment is the share of the fire's edge that has a control line; it is reported by the incident team and can lag the ground situation.
Where is the Sisi Fire?
The reported point of origin is at 48.3467, -120.8307 in Chelan County, Washington. Nearest towns: Darrington (36 mi W), Granite Falls (42 mi SE), Manson (45 mi SE). The map on this page shows the most recent mapped perimeter.
Is the Sisi Fire still burning?
The federal feed still lists it as active as of Oct 17, 2026, 23:45 UTC, and satellites registered 2 heat detections matched to it in the last 24 hours.
What is the timeline of the Sisi Fire?
The Sisi Fire was first listed in the federal feed Aug 14, 2026, 19:45 UTC (reported discovery date Aug 14, 2026). As of Oct 17, 2026, 23:45 UTC it is still listed at 4,615 acres, 34% contained. The timeline table on this page shows the size and containment reported each UTC day across 56 days of archive.
Where do I find evacuation orders for the Sisi Fire?
From the county sheriff and local emergency management, not from this site. Check the official Washington sources on our Washington page and your county’s alert system. FireRiskHere is for awareness only.
How current is this page?
The numbers come from the National Interagency Fire Center's WFIGS incident feed and the WFIGS perimeter service, refreshed every 15 minutes, plus NASA FIRMS satellite detections hourly. This page was last updated Oct 17, 2026, 23:45 UTC. Acreage and containment are what the incident team reports and can lag by hours.
About this page
This page is generated automatically for every wildfire whose reported size reaches 1,000 acres, from FireRiskHere’s archive of the National Interagency Fire Center’s WFIGS incident feed (captured every 15 minutes), the WFIGS interagency perimeter service, and NASA FIRMS satellite detections. It stays online after the fire is contained as a record of the incident. Nothing here is an official notice — for evacuation orders and road closures follow your county sheriff and local emergency management. How the site works →