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2021 California wildfires facts for kids

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2021 California wildfires
Cafires vir 2021231 lrg.jpg
Smoke from multiple wildfires in California
Statistics
Total fires 8,619
Total area 2,569,009 acres (1,039,641 ha)
Cost Unknown
Date(s)
January 14–December 16
Buildings destroyed 3,629
Deaths 3
Non-fatal injuries 22
Map
A map of wildfires in California in 2021, using Cal Fire data
A map of wildfires in California in 2021, using Cal Fire data
Season
← 2020
2022 →

The 2021 California wildfire season was a series of wildfires that burned across the U.S. state of California. By the end of 2021 a total of 8,835 fires were recorded, burning 2,568,948 acres (1,039,616 ha) across the state. Approximately 3,629 structures were damaged or destroyed by the wildfires, and at least seven firefighters and two civilians were injured.

The wildfire season in California experienced an unusually early start amid an ongoing drought and historically low rainfall and reservoir levels. In January 2021 alone, 297 fires burned 1,171 acres (4.74 km2) on nonfederal land according to the California Department of Forestry and Fire Protection, which is almost triple the number of fires and more than 20 times the acreage of the five-year average for January. The January fires were exacerbated by unseasonably strong Santa Ana winds, and some of them burned in the same areas as previous fires like the CZU Lightning Complex.

The long term trend is that wildfires in the state are increasing due to climate change in California. The 2021 wildfire season was exceptionally severe in California, although it did not approach the extent of the previous year's wildfire season, which was the largest season in the state's recorded history. As of July 11, more than three times as many acres have burned compared to the previous year through that date, with drought, extreme heat, and reduced snowpack contributing to the severity of the fires. The state also faces an increased risk of post-wildfire landslides.

As of August 18, 2021, the state of California was facing "unprecedented fire conditions" as multiple fires including the Dixie Fire, McFarland Fire, Caldor Fire, and others, raged on. The USDA Forest Service temporarily closed all of California's national forests at the end of August to mitigate the impact of potential fires.

On October 18, 2021, much of the state—particularly Northern California, where the majority of the significant fires had been located—received its first major precipitation since the start of the wildfire season. This significantly lowered wildfire risk in the region.

Impact

Pyrocumulus cloud produced by the Dixie Fire on July 22-5865
Fire cloud produced by the Dixie Fire, which became the largest single (non-complex) wildfire in California history by August 6, 2021
KRRD 2021 Prescribed Fire
Firefighters setting a prescribed fire on January 27, 2021 near Ant Canyon in Kern County
Tumbleweed Fire, Los Angeles County 2021, Part 1
Fire retardant and smoldering brush in the Tumbleweed Fire north of Los Angeles in July 2021

PG&E and other utility companies preemptively spent billions of dollars to reduce the risk of wildfires and avoid an year similar to the previous year's fire season. Firefighters have also set prescribed fires to prevent other fires burning.

A 2023 study found that these wildfires are affecting the California ecosystem and disrupting the habitats. It found that in the 2020 and 2021 fire seasons 58% of the area affected by wildfires occurred in those two seasons since 2012. These two fires destroyed 30% of the habitat of 50 species as well as 100 species that had 10% of their habitats burn. 5-14% of the species' habitats burned at a "high severity."

List of wildfires

Tiltill Fire
Aerial view from the northwest of the Tiltill Fire's smoke plume, just north of the Hetch Hetchy in Yosemite

The following is a list of fires that burned more than 1,000 acres (400 ha), or produced significant structural damage or casualties.

Name County Acres Start date Containment date Notes Ref
Owens Kern 1,512 May 1 May 7 Unknown cause
Southern San Diego 5,366 May 2 May 6 4 structures destroyed
Palisades Los Angeles 1,202 May 14 May 26 Human-caused, suspected arson; 1 firefighter injured
Sargents Monterey 1,100 May 30 June 2 Unknown cause
Sierra San Diego 1,000 June 9 June 12
Willow Monterey 2,877 June 17 July 12 Unknown cause
Mojave San Bernardino 2,490 June 17 June 26 Caused by lightning
Nettle Tulare 1,265 June 18 July 2
Henry Alpine 1,320 June 24 July 27 Caused by lightning
Lava Siskiyou 26,409 June 25 September 3 Caused by lightning; 23 structures destroyed; 1 structure damaged; 6 firefighters injured
Shell Kern 1,984 June 27 July 2 Caused by a car fire
Tennant Siskiyou 10,580 June 28 July 12 Unknown cause; 9 structures destroyed
Salt Shasta 12,660 June 30 July 19 Caused by hot material falling off of a vehicle; 43 structures destroyed
East Fork Alpine 1,136 July 1 July 11 Caused by lightning
Beckwourth Complex Plumas, Lassen 105,670 July 3 September 22 Caused by lightning; includes the Dotta Fire and the Sugar Fire; 148 structures destroyed; 23 structures damaged
Tamarack Alpine, Mono, Douglas (NV) 68,637 July 4 October 8 Caused by lightning; 25 structures destroyed; 7 structures damaged
Juniper Modoc 1,011 July 5 July 13 Unknown cause
River Mariposa, Madera 9,656 July 11 July 19 Unknown cause; 12 structures destroyed; 2 structures damaged
Dexter Mono 2,965 July 12 July 27 Caused by lightning
Dixie Butte, Lassen, Plumas, Shasta, Tehama 963,309 July 13 October 25 Caused by contact between tree and power lines; 1,329 structures destroyed; 95 structures damaged; 1 firefighter fatality; 3 firefighter injuries. Merged with the Fly Fire on July 24. Second-largest wildfire and the largest single (non-complex) wildfire in recorded California history
Peak Kern 2,098 July 20 August 12 Unknown cause; 1 structure destroyed
Fly Plumas 4,300 July 22 October 25 Unknown cause; merged with the Dixie Fire on July 24
McFarland Shasta, Tehama, Trinity 122,653 July 29 September 16 Caused by lightning; 46 structures destroyed; 1 structure damaged; 6 firefighters injured
Monument Trinity 223,124 July 30 October 25 Caused by lightning; 52 structures destroyed; 3 structures damaged
River Complex Siskiyou, Trinity 199,359 July 30 October 25 Caused by lightning; 122 structures destroyed; 2 structures damaged; consists of 22 fires, of which the largest are the Haypress Fire, the Summer Fire, and the Cronan Fire
McCash Siskiyou 94,962 July 31 October 27 Caused by lightning; 1 firefighter fatality
Tiltill Tuolumne 2,323 July 31 October 15 Caused by lightning
Antelope Siskiyou 145,632 August 1 October 15 Caused by lightning; 18 structures destroyed; 4 structures destroyed
River Nevada, Placer 2,619 August 4 August 13 Unknown cause; 142 structures destroyed; 21 structures damaged; 4 injuries
Caldor El Dorado, Amador, Alpine 221,835 August 15 October 21 Unknown cause; 1,003 structures destroyed; 81 structures damaged; 5 injuries
Walkers Tulare 8,777 August 14 September 18 Caused by lightning
French Kern 26,535 August 18 October 19 Human-caused; 49 structures destroyed; 6 structures damaged; 1 firefighter fatality
South San Bernardino 819 August 25 September 1 Unknown cause; 17 structures destroyed
Chaparral San Diego, Riverside 1,427 August 28 September 9 Unknown cause; 3 structures destroyed
Knob Humboldt 2,421 August 29 September 12 Unknown cause
Windy Tulare 97,528 September 9 November 15 Caused by lightning; 128 structures destroyed; 4 injuries
KNP Complex Tulare 88,307 September 10 December 16 Caused by lightning; includes the Colony Fire and the Paradise Fire; 4 structures destroyed; 1 structure damaged
Fawn Shasta 8,578 September 22 October 2 Suspected arson; 185 structures destroyed; 26 structures damaged; 3 injuries
Alisal Santa Barbara 16,970 October 11 November 16 Unknown cause; 12 structures destroyed

Wildfires listed by month

See also

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