Idaho · Active · 158,027 acres
Tartar Fire, Idaho
158,027
Acres reported
98%
Contained
0
Acres since yesterday
Last updated · refreshed every 15 minutes from the NIFC WFIGS feed · awareness only — follow local authorities
Update ·
As of Aug 18, 2026, 09:15 UTC, the Tartar Fire is listed as active at 158,027 acres, 98% contained, in Washington County, Idaho.
No change in reported size or containment since Aug 17, 2026, 09:00 UTC.
The most recent mapped perimeter (Aug 11, 2026, 21:48 UTC) covers 158,027 acres; the mapped perimeter has been updated 60 times since the fire began.
No satellite heat detections matched to this incident in the last 24 hours (last one Aug 11, 2026, 10:00 UTC).
Tartar 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
- 158,027 acres
- Containment
- 98%
- Status
- Active
- Discovered
- Jul 24, 2026
- Location
- Washington County, Idaho
- Origin point
- 44.5413, -117.0930
- Perimeter mapped
- Aug 11, 2026 (7 days ago)
- Satellite heat, 24 h
- none matched
Nearest towns
Distances are from the reported point of origin, not from the fire’s edge (see the perimeter map for the current extent).
- Weiser, ID
- Payette, ID
- Ontario, OR
- Fruitland, ID
- Vale, OR
Other fires nearby
- Fox Fire
- Powder River Fire
- Bob Creek Fire
Tartar Fire daily history
The largest size and containment reported each UTC day, from our 15-minute archive of the federal feed (first seen Jul 24, 2026, 17:30 UTC).
| Day (UTC) | Reported size | Change | Contained |
|---|---|---|---|
| Aug 18, 2026 | 158,027 acres | 0 | 98% |
| Aug 17, 2026 | 158,027 acres | 0 | 98% |
| Aug 16, 2026 | 158,027 acres | 0 | — |
| Aug 15, 2026 | 158,027 acres | 0 | — |
| Aug 14, 2026 | 158,027 acres | 0 | — |
| Aug 13, 2026 | 158,027 acres | 0 | — |
| Aug 12, 2026 | 158,027 acres | 0 | — |
| Aug 11, 2026 | 158,027 acres | 0 | — |
| Aug 10, 2026 | 158,027 acres | 0 | — |
| Aug 9, 2026 | 158,027 acres | +5 | — |
| Aug 8, 2026 | 158,022 acres | +4,769 | — |
| Aug 7, 2026 | 153,253 acres | 0 | — |
| Aug 6, 2026 | 153,253 acres | +14,982 | — |
| Aug 5, 2026 | 138,271 acres | 0 | — |
| Aug 4, 2026 | 138,271 acres | +30,415 | — |
| Aug 3, 2026 | 107,856 acres | +92,380 | — |
| Aug 2, 2026 | 15,476 acres | +3,493 | — |
| Aug 1, 2026 | 11,983 acres | −225 | — |
| Jul 31, 2026 | 12,208 acres | 0 | — |
| Jul 30, 2026 | 12,208 acres | 0 | — |
| Jul 29, 2026 | 12,208 acres | 0 | — |
| Jul 28, 2026 | 12,208 acres | 0 | — |
| Jul 27, 2026 | 12,208 acres | +1,845 | — |
| Jul 26, 2026 | 10,363 acres | +8,102 | — |
| Jul 25, 2026 | 2,261 acres | +2,011 | — |
| Jul 24, 2026 | 250 acres | — | — |
Get an email when a new fire starts near you
Free. One email per new fire within the distance you choose of the address you pick. Unsubscribe with one click. Not an emergency service — always follow local authorities.
Tartar Fire questions, answered from the data
How big is the Tartar Fire?
As of Aug 18, 2026, 09:15 UTC, the Tartar Fire is reported at 158,027 acres. No change in reported size or containment since Aug 17, 2026, 09:00 UTC.
Is the Tartar Fire contained?
Not fully. It was 98% contained as of Aug 18, 2026, 09:15 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 Tartar Fire?
The reported point of origin is at 44.5413, -117.0930 in Washington County, Idaho. Nearest towns: Weiser (21 mi S), Payette (33 mi S), Ontario (36 mi S). The map on this page shows the most recent mapped perimeter.
Is the Tartar Fire still burning?
The federal feed still lists it as active as of Aug 18, 2026, 09:15 UTC; no satellite heat detections were matched to it in the last 24 hours.
Where do I find evacuation orders for the Tartar Fire?
From the county sheriff and local emergency management, not from this site. Check the official Idaho sources on our Idaho 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 Aug 18, 2026, 09:15 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 →