Feed checks and source-record updates do not necessarily mean fire conditions changed. Figures below reflect the last recorded incident report.
Automated summary generated: Oct 31, 2026 19:45 UTC. It may lag behind the report and is not an official alert.
The LASSEN wildfire was discovered on October 27, 2026, in Tehama County, California, at latitude 39.9133 and longitude -122.0118. As of the latest report, the fire has burned 11.3 acres with no containment achieved and the cause remains undetermined. No jurisdictional agency or personnel details are available, and no specific fire behavior or weather conditions have been reported. The incident remains in its early stages, with no containment progress noted in the single timeline entry.
Historical observations from incident reports, not a live forecast. Acreage and containment can decrease when agencies correct their estimates.
1
11 acres
11 acres
Latest available source report: Oct 27, 2026 20:02 UTC. This is the report date, not confirmation of current fire conditions.
There are not enough distinct dated measurements to establish a documented progression for this incident.
| Report date (UTC) | Acres | Containment | Source |
|---|---|---|---|
| Oct 27, 2026 20:02 | 11 | Not reported | NIFC |
Good air quality at the reporting station. AQI does not assess fire danger, road access or evacuation status.
Reporting area: Not reported. Source: AirNow.gov (EPA).
Observed: 2026-11-08 01:00:00 UTC Β· Site: Chico - East.
Any automated community or travel summary below may be outdated. It is not a live evacuation or road-closure notice.
Verify evacuation orders, closures and access with the responsible fire agency, county emergency management or sheriff. A containment percentage, feed status or AQI reading does not establish that an area is safe to enter.
NIFC fire information and official resources βIRWIN ID: {0CFEBF40-877E-4B18-A124-C1968F3A549C}
Discovered: Oct 27, 2026
Cause: Undetermined
Coordinates: 39.9133, -122.0118
Other wildfires no longer present in our filtered incident feed in CA.
The LASSEN Fire has burned 11 acres as of October 27, 2026.
Containment has not been officially reported for the LASSEN Fire.
The official cause has been listed as: Undetermined.
The LASSEN Fire is burning in Tehama, CA.
The LASSEN Fire currently meets our U.S. incident tracking criteria. This does not confirm current fire behavior.
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