Idaho · Active · 3,697 acres
Upper Smith Fire, Idaho
3,697
Acres reported
38%
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 Upper Smith Fire is listed as active at 3,697 acres, 38% contained, in Boundary County, Idaho.
No change in reported size or containment since Aug 17, 2026, 09:00 UTC.
The most recent mapped perimeter (Aug 14, 2026, 10:29 UTC) covers 3,697 acres; the mapped perimeter has been updated 45 times since the fire began.
Satellites (VIIRS/MODIS) registered 2 heat detections matched to this incident in the last 24 hours, the latest at Aug 17, 2026, 10:05 UTC.
Upper Smith 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
- 3,697 acres
- Containment
- 38%
- Status
- Active
- Discovered
- Jul 8, 2026
- Location
- Boundary County, Idaho
- Origin point
- 48.9275, -116.6078
- Perimeter mapped
- Aug 14, 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).
- Bonners Ferry, ID
- Ponderay, ID
- Sandpoint, ID
- Priest River, ID
- Newport, WA
Other fires nearby
- Green Ridge Fire
- Wylie Knob Fire
Upper Smith Fire daily history
The largest size and containment reported each UTC day, from our 15-minute archive of the federal feed (first seen Jul 8, 2026, 18:15 UTC).
| Day (UTC) | Reported size | Change | Contained |
|---|---|---|---|
| Aug 18, 2026 | 3,697 acres | 0 | 38% |
| Aug 17, 2026 | 3,697 acres | 0 | 38% |
| Aug 16, 2026 | 3,697 acres | 0 | — |
| Aug 15, 2026 | 3,697 acres | +97 | — |
| Aug 14, 2026 | 3,600 acres | 0 | — |
| Aug 13, 2026 | 3,600 acres | +53 | — |
| Aug 12, 2026 | 3,547 acres | 0 | — |
| Aug 11, 2026 | 3,547 acres | +130 | — |
| Aug 10, 2026 | 3,417 acres | +195 | — |
| Aug 9, 2026 | 3,222 acres | 0 | — |
| Aug 8, 2026 | 3,222 acres | +608 | — |
| Aug 7, 2026 | 2,614 acres | +309 | — |
| Aug 6, 2026 | 2,305 acres | 0 | — |
| Aug 5, 2026 | 2,305 acres | 0 | — |
| Aug 4, 2026 | 2,305 acres | +114 | — |
| Aug 3, 2026 | 2,191 acres | −3 | — |
| Aug 2, 2026 | 2,194 acres | +265 | — |
| Aug 1, 2026 | 1,929 acres | +162 | — |
| Jul 31, 2026 | 1,767 acres | +119 | — |
| Jul 30, 2026 | 1,648 acres | +75 | — |
| Jul 29, 2026 | 1,573 acres | +55 | — |
| Jul 28, 2026 | 1,518 acres | 0 | — |
| Jul 27, 2026 | 1,518 acres | +334 | — |
| Jul 26, 2026 | 1,184 acres | +123 | — |
| Jul 25, 2026 | 1,061 acres | +29 | — |
| Jul 24, 2026 | 1,032 acres | +62 | — |
| Jul 23, 2026 | 970 acres | +93 | — |
| Jul 22, 2026 | 877 acres | +62 | — |
| Jul 21, 2026 | 815 acres | 0 | — |
| Jul 20, 2026 | 815 acres | +67 | — |
| Jul 19, 2026 | 748 acres | +150 | — |
| Jul 18, 2026 | 598 acres | 0 | — |
| Jul 17, 2026 | 598 acres | +148 | — |
| Jul 16, 2026 | 450 acres | 0 | — |
| Jul 15, 2026 | 450 acres | 0 | — |
| Jul 14, 2026 | 450 acres | 0 | — |
| Jul 13, 2026 | 450 acres | +36 | — |
| Jul 12, 2026 | 414 acres | +264 | — |
| Jul 11, 2026 | 150 acres | −92 | — |
| Jul 10, 2026 | 242 acres | +212 | — |
| Jul 9, 2026 | 30 acres | +15 | — |
| Jul 8, 2026 | 15 acres | — | — |
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Upper Smith Fire questions, answered from the data
How big is the Upper Smith Fire?
As of Aug 18, 2026, 09:15 UTC, the Upper Smith Fire is reported at 3,697 acres. No change in reported size or containment since Aug 17, 2026, 09:00 UTC.
Is the Upper Smith Fire contained?
Not fully. It was 38% 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 Upper Smith Fire?
The reported point of origin is at 48.9275, -116.6078 in Boundary County, Idaho. Nearest towns: Bonners Ferry (21 mi SE), Ponderay (43 mi S), Sandpoint (45 mi S). The map on this page shows the most recent mapped perimeter.
Is the Upper Smith Fire still burning?
The federal feed still lists it as active as of Aug 18, 2026, 09:15 UTC, and satellites registered 2 heat detections matched to it in the last 24 hours.
Where do I find evacuation orders for the Upper Smith 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 →