Thumb Fire
No longer in current feed
St. Louis County, Minnesota · Discovered July 7, 2026
Source: NIFC/IRWIN (interagency) · Last upstream update 42 days ago
Thumb Fire
The Thumb Fire fire has burned 25,015 acres in St. Louis County, Minnesota. It is no longer in the current official feed, so the figures on this page reflect the last data reported. Crews have fully contained the fire. Air quality near the fire is good (AQI 25). 3 personnel are assigned to the incident.
Thumb Fire size over time
13 official size readingsGrew from 18K to 25K acres across these reports.
Acreage as reported by the official incident feed, recorded by Fire Nearby each time it changes. Hover or tap the chart for each reading.
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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
63 days ago · September 8, 2026Containment rose to 97%
71 days ago · August 31, 2026New perimeter mapped at 25,015 acres (national perimeter feed)
71 days ago · August 31, 2026Containment rose to 55%
81 days ago · August 21, 2026Containment rose to 47%
83 days ago · August 19, 2026Grew 261 acres in 4 days to 25,014 acres
84 days ago · August 18, 2026Containment rose to 42%
87 days ago · August 15, 2026Containment dropped to 35% (from 48%)
88 days ago · August 14, 2026Grew 7,119 acres in 3 days to 24,753 acres
88 days ago · August 14, 2026Fire first listed in official incident feeds at 17,634 acres
91 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.