Upper Smith Fire
Active
Boundary County, Idaho · Discovered July 8, 2026
Source: NIFC/IRWIN (interagency) · Last upstream update 19 hours ago · Perimeter mapped 19 hours ago (NIFC WFIGS)
Upper Smith Fire
The Upper Smith Fire fire has burned 4,848 acres in Boundary County, Idaho. Crews have reached 41% containment. It has shown no measurable growth in the last 24 hours. Wind at the fire is blowing 12 mph toward the NE, with gusts to 24 mph. Air quality near the fire is good (AQI 4). 11 personnel are assigned to the incident.
Latest official update
August 29, 2026The Border Fire reached 100% containment on September 7, 2026. This incident page will remain active through the weekend. This is the final update for the Border Fire unless changing conditions warrant further updates. The Border Fire is located within the Boundary Creek drainage, approximately 3 miles west of Porthill, Idaho, and directly along the border with Canada. The fire was ignited by lightning on August 25, 2026. It burned on a steep, southeast-facing slope in mixed conifer forest with moderate to high loadings of 1000-hour fuels and deep duff layers.The Northern Idaho Blue Team…
Read the full update on InciWebPosted by the incident management team on InciWeb (inciweb.wildfire.gov).
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Incident timeline
Generated automatically from official feeds the moment they change: size, containment, evacuation zones, aircraft, and incident team updates.
New perimeter mapped at 4,848 acres (national perimeter feed)
13 days ago · September 12, 2026Grew 121 acres in 3 days to 4,788 acres
25 days ago · August 31, 2026Official update: IDIPF Border Fire
28 days ago · August 29, 2026Grew 115 acres in 3 days to 4,667 acres
28 days ago · August 28, 2026Official update: IDIPF Parker Lake Fire
31 days ago · August 26, 2026Grew 110 acres in 24 hours to 4,552 acres
31 days ago · August 25, 2026Grew 221 acres in 47 hours to 4,442 acres
32 days ago · August 24, 2026Grew 327 acres in 48 hours to 4,221 acres
34 days ago · August 22, 2026Grew 197 acres in 6 days to 3,894 acres
36 days ago · August 20, 2026Containment rose to 38%
41 days ago · August 15, 2026Grew 150 acres in 3 days to 3,697 acres
42 days ago · August 14, 2026Grew 130 acres in 9 hours to 3,547 acres
45 days ago · August 11, 2026Fire first reported in official feeds at 3,417 acres
46 days ago · August 11, 2026
Raw growth & containment readings
| Recorded | Size | Contained |
|---|---|---|
| 9/5/2026, 10:57:45 PM | 4,848 acres | 41% |
| 9/1/2026, 11:09:34 PM | 4,808 acres | 42% |
| 8/31/2026, 11:27:39 PM | 4,788 acres | 42% |
| 8/30/2026, 11:20:19 PM | 4,701 acres | 42% |
| 8/29/2026, 11:35:48 PM | 4,701 acres | 36% |
| 8/28/2026, 11:42:13 PM | 4,667 acres | 36% |
| 8/26/2026, 9:55:48 PM | 4,576 acres | 36% |
| 8/25/2026, 10:15:43 PM | 4,552 acres | 36% |
| 8/24/2026, 9:59:06 PM | 4,442 acres | 36% |
| 8/22/2026, 10:30:00 PM | 4,221 acres | 38% |
| 8/21/2026, 11:11:42 PM | 3,906 acres | 38% |
| 8/20/2026, 10:27:22 PM | 3,894 acres | 38% |
| 8/15/2026, 10:16:32 PM | 3,697 acres | 38% |
| 8/14/2026, 11:58:21 PM | 3,697 acres | 35% |
| 8/14/2026, 12:07:12 AM | 3,600 acres | 35% |
| 8/13/2026, 12:02:03 AM | 3,600 acres | 30% |
| 8/11/2026, 11:30:36 PM | 3,547 acres | 30% |
| 8/11/2026, 2:04:22 PM | 3,417 acres | 32% |
Recorded by Fire Nearby each time upstream data changes.
About this data
Fire Nearby aggregates official incident data and shows exactly when each value was last updated. For evacuation decisions, always follow instructions from local emergency officials and check county emergency management channels.