Thumb Fire
Active
St. Louis County, Minnesota · Discovered July 7, 2026
Source: NIFC/IRWIN (interagency) · Last upstream update 17 days ago
Thumb Fire
The Thumb Fire fire has burned 25,015 acres in St. Louis County, Minnesota. Crews have fully contained the fire. It has shown no measurable growth in the last 24 hours. Wind at the fire is blowing 8 mph toward the NW, with gusts to 21 mph. Air quality near the fire is good (AQI 19). 3 personnel are assigned to the incident.
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Incident timeline
Generated automatically from official feeds the moment they change: size, containment, evacuation zones, aircraft, and incident team updates.
Fire reported 100% contained
17 days ago · September 8, 2026Containment rose to 97%
25 days ago · August 31, 2026New perimeter mapped at 25,015 acres (national perimeter feed)
25 days ago · August 31, 2026Containment rose to 55%
35 days ago · August 21, 2026Containment rose to 47%
37 days ago · August 19, 2026Grew 261 acres in 4 days to 25,014 acres
38 days ago · August 18, 2026Containment rose to 42%
41 days ago · August 15, 2026Containment dropped to 35% (from 48%)
42 days ago · August 14, 2026Grew 7,119 acres in 3 days to 24,753 acres
42 days ago · August 14, 2026Fire first reported in official feeds at 17,634 acres
46 days ago · August 11, 2026
Raw growth & containment readings
| Recorded | Size | Contained |
|---|---|---|
| 9/8/2026, 7:51:33 PM | 25,015 acres | 100% |
| 8/31/2026, 10:54:41 PM | 25,015 acres | 97% |
| 8/29/2026, 10:59:37 PM | 25,015 acres | 59% |
| 8/25/2026, 9:45:58 PM | 25,015 acres | 58% |
| 8/21/2026, 9:22:12 PM | 25,015 acres | 55% |
| 8/20/2026, 9:22:15 PM | 25,015 acres | 51% |
| 8/19/2026, 10:06:55 PM | 25,015 acres | 47% |
| 8/18/2026, 9:47:24 PM | 25,014 acres | 46% |
| 8/17/2026, 4:26:42 PM | 24,755 acres | 44% |
| 8/15/2026, 11:16:32 PM | 24,755 acres | 42% |
| 8/14/2026, 10:53:20 PM | 24,753 acres | 35% |
| 8/13/2026, 10:02:10 PM | 17,628 acres | 48% |
| 8/11/2026, 2:04:22 PM | 17,634 acres | 48% |
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.