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US · United States · California

Wildfires in Lassen

Lassen, United States, has had 22 fires with an official perimeter since 2016: 187,701 hectares burned inside the county, 15% of its area. Fire danger today: moderate (FWI 14).

Only fires of 400 ha or more get an entry: smaller ones are not in the lists or the totals on this page.

Fire danger, today and the coming days

FWI computed from the Open-Meteo forecast
  1. Wed 28 Low 11° · 34 % · 22 km/h
  2. Thu 29 Moderate 13° · 24 % · 33 km/h
  3. Fri 30 Moderate 10° · 42 % · 45 km/h
  4. Sat 31 Very low 8° · 63 % · 30 km/h
  5. Sun 1 Very low 7° · 59 % · 34 km/h
  6. Mon 2 Very low 10° · 39 % · 42 km/h
  7. Tue 3 Very low 13° · 44 % · 24 km/h
  8. Wed 4 Very low 12° · 60 % · 30 km/h

Canadian Fire Weather Index, the same system Copernicus uses, computed by WorldFires from the weather forecast and two months of past weather for fuel state. It is an estimate per municipality, not an official warning: warnings are issued by each country’s emergency service.

The county and its fires

Since 2016

187,701
hectares burned
15 %
of the county
22
fires
12,277
km²

How many times has Lassen burned?

Lassen has burned 22 times since 2016, in 7 years: 2016, 2017, 2018, 2019, 2020, 2021 and 2026. The most recent: Bug Fire, August 2026, with 4,344 hectares inside the municipality. Together they add up to 187,701 hectares burned inside the municipality, but the distinct burned area is 179,282 hectares, 15 % of its surface: part of it burned more than once.

  1. 1× 16
  2. 3× 17
  3. 1× 18
  4. 3× 19
  5. 8× 20
  6. 2× 21
  7.   22
  8.   23
  9.   24
  10.   25
  11. 4× 26
22
fires
7
years with fire
187,701
cumulative ha
179,282
distinct ha

Fires larger than 400 hectares with a perimeter since 2016 that reached the municipality, even partly. Cumulative hectares add up every fire; the distinct area counts land that burned several times only once. Perimeters and boundaries overlaid by WorldFires.

Where it has burned most often in United States →

Fires that entered Lassen

  1. 4,344 ha Bug Fire, August 2026 0.4% of the county · 37,933 ha in total · 8 days
  2. 26,531 ha Biscar Fire, July 2026 where it started 2.2% of the county · 28,066 ha in total · 4 days
  3. 6,909 ha Elephant Fire, July 2026 where it started 0.6% of the county · 5,637 ha in total · 8 days
  4. 428 ha 3-1 Pit Fire, July 2026 where it started 0.0% of the county · 427 ha in total · 2 days
  5. 56,978 ha Dixie Fire, 9 July 2021 4.6% of the county · 396,479 ha in total · 118 days
  6. 15,011 ha Sugar Fire, July 2021 1.2% of the county · 43,900 ha in total · 23 days
  7. 1,246 ha Laura 2 Fire, November 2020 where it started 0.1% of the county · 1,255 ha in total · 1 day
  8. 7 ha Baccarat Fire, October 2020 0.0% of the county · 4,114 ha in total · 2 days
  9. 25,756 ha W-5 Cold Springs Fire, August 2020 where it started 2.1% of the county · 34,032 ha in total · 28 days
  10. 8,847 ha Sheep Fire, August 2020 where it started 0.7% of the county · 11,799 ha in total · 21 days
  11. 6,253 ha Loyalton Fire, August 2020 0.5% of the county · 18,422 ha in total · 8 days
  12. 1,083 ha North Fire, August 2020 0.1% of the county · 2,763 ha in total · 2 days
  13. 8,836 ha Gold Fire, July 2020 where it started 0.7% of the county · 8,751 ha in total · 10 days
  14. 3,931 ha Hog Fire, July 2020 where it started 0.3% of the county · 3,930 ha in total · 9 days
  15. 1,522 ha R-1 Ranch Fire, August 2019 where it started 0.1% of the county · 1,528 ha in total · 7 days
  16. 232 ha Long Valley Fire, August 2019 0.0% of the county · 993 ha in total · 1 day
  17. 470 ha W-1 Mcdonald Fire, August 2019 where it started 0.0% of the county · 466 ha in total · 1 day
  18. 7,572 ha Whaleback Fire, July 2018 where it started 0.6% of the county · 7,544 ha in total · 8 days
  19. 244 ha Washoe fire, August 2017 0.0% of the county · 7,307 ha in total · 2 days
  20. 2,444 ha Mud Fire, August 2017 where it started 0.2% of the county · 2,447 ha in total · 2 days
  21. 7,922 ha Long Valley Fire, July 2017 0.6% of the county · 32,578 ha in total · 7 days
  22. 1,134 ha Willard Fire, September 2016 where it started 0.1% of the county · 1,144 ha in total · 3 days

Where this data comes from

Perimeters are official, from MTBS (USGS and USDA Forest Service) and NIFC, in the public domain; county boundaries come from geoBoundaries/United States Census Bureau, MAF/TIGER Database (Public Domain). The area per county is computed by WorldFires by crossing both. The forecast is from Open-Meteo (CC BY 4.0).

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