Sieben Fire
No longer in current feed
Lewis and Clark County, Montana · Discovered August 22, 2026
Source: NIFC/IRWIN (interagency) · Last upstream update 33 days ago
Sieben Fire
The Sieben Fire fire has burned 51 acres in Lewis and Clark County, Montana. It is no longer in the current official feed, so the figures on this page reflect the last data reported. Air quality near the fire is good (AQI 31).
Sieben Fire size over time
4 official size readingsPeaked at 53 acres, then officials revised the mapped size to 51 acres.
Acreage as reported by the official incident feed, recorded by Fire Nearby each time it changes. Hover or tap the chart for each reading.
Follow the Sieben Fire from your Lock Screen
Track the Sieben Fire with a Live Activity, see size and containment change as officials report it, and get alerted if an evacuation order reaches your address.
- Lock Screen tracking
- Evacuation order alerts
- Live perimeter map
Scan with your iPhone camera
Is there a fire near me?
Enter any US or Canadian address or town for an instant risk report: nearby fires, wind, smoke, air quality, and evacuation alerts.
Growth & containment history
Raw growth & containment readings
| Recorded | Size | Contained |
|---|---|---|
| 8/22/2026, 6:33:11 PM | 51 acres | - |
| 8/22/2026, 2:21:41 PM | 53 acres | - |
| 8/22/2026, 2:54:25 AM | 18 acres | - |
| 8/22/2026, 2:02:01 AM | 15 acres | - |
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.