Evacuations in effect for this event
- Evacuation warningUS-CA-XSI-SIE-E024 — Sierra County
- Evacuation warningUS-CA-XSI-SIE-E061 — Sierra County
Live from Cal OES · as of . Zones can change quickly — follow your local sheriff / emergency management for instructions.
A human-caused wildfire near Lassen, California has burned 16,680 acres with minimal containment, posing a direct fire threat to structures in the area.
Overview written from official NASA EONET and National Interagency Fire Center/IRWIN data.
- Type
- Wildfires
- Official size
- 93,733 acres
- Containment
- 97%
- Cause
- Human
- Began
- Status
- Ongoing
Affected by this event? Open your area's damage guides below to reach a vetted local restoration pro, 24/7.
Affected area map
The shaded area is the affected-area perimeter reported for this event by NASA EONET (Lassen, California), colored by hazard type. Pan and zoom to explore the map; when more than one observation exists, use the slider below to step through how the reported area changed.
Interactive affected-area map
Lassen, California · ≈ 150 sq mi reported extent · Enable JavaScript to explore the map.
2026-08-23 23:20 UTC · ≈ 150 sq mi · snapshot 16 of 16
reported perimeter · evacuation zones (dashed): warning / shelter
View the timeline — how the reported area changed
Official size & containment
Official incident size and containment reported through NIFC / IRWIN, as we observed it. Newest first.
- 93,733 acres ±0 97% contained
- 93,733 acres ±0 94% contained
- 93,733 acres ±0 94% contained
- 93,733 acres ±0 94% contained
- 93,733 acres ±0 94% contained
- 93,733 acres ±0 94% contained
- 93,733 acres ±0 94% contained
- 93,733 acres ±0 94% contained
Show 20 earlier observations
- 93,733 acres ±0 87% contained
- 93,733 acres ±0 87% contained
- 93,733 acres ±0 87% contained
- 93,733 acres −372 85% contained
- 94,105 acres +738 76% contained
- 93,367 acres +4,945 58% contained
- 88,422 acres ±0 31% contained
- 88,422 acres +17,665 31% contained
- 70,757 acres ±0 3% contained
- 70,757 acres +13,394 3% contained
- 57,363 acres ±0 3% contained
- 57,363 acres ±0 0% contained
- 57,363 acres −603 0% contained
- 57,966 acres +603 0% contained
- 57,363 acres +13,059 3% contained
- 44,304 acres ±0 3% contained
- 44,304 acres +29,304 3% contained
- 15,000 acres −1,680 3% contained
- 16,680 acres +1,680 3% contained
- 15,000 acres 3% contained
Shown as reported by our sources — not an official product. For current advisories and the authoritative map, see NASA EONET ↗.
Restoration help near this event
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Fire damage restoration
What to do now
Water damage restoration
Putting out a fire — hose lines, sprinklers, suppression — often floods the property and leaves water damage behind too.
What to do now
Latest updates
We post official updates here as an event develops. There are no curated updates for this event yet — for the latest bulletins and advisories, follow the official source directly.