The Mendocino Complex Fire was a large complex of wildfires that burned in northern California for more than three months in 2018. It consisted of two wildfires, the River Fire and Ranch Fire, which burned in Mendocino, Lake, Colusa, and Glenn Counties in the U.S. State of California, with the Ranch Fire being California's single-largest recorded wildfire at the time until the August Complex fire in 2020. The Ranch Fire burned eight miles northeast of Ukiah, and the River Fire burned six miles north of Hopland, to the south of the larger Ranch Fire. First reported on July 27, 2018, both fires burned a combined total of 459,123 acres (1,858 km2), before they were collectively 100% contained on September 18, though hotspots persisted until the complex was fully brought under control on January 4, 2019. The Ranch Fire alone burned 410,203 acres (1,660 km2), making it the largest wildfire in modern California history at the time until the August Complex fire that occurred in 2020. The Ranch Fire also surpassed the size of the 315,577-acre Rush Fire, which burned across California and Nevada, as well as the Santiago Canyon Fire of 1889, which was previously believed to have been California's all-time largest wildfire.
The Natchez Fire was a wildfire that burned near the California and Oregon border in Siskiyou County, California, in the United States. The Natchez Fire began on July 15, 2018, due to lightning, and the fire burned a total of 38,134 acres before it was fully contained on October 30, 2018.
The 2020 Loyalton Fire was a large wildfire in Lassen, Plumas and Sierra counties in California and Washoe County in Nevada. After it was ignited by lightning on August 14, 2020, the fire burned 47,029 acres (19,032 ha) in the Tahoe National Forest and the Humboldt-Toiyabe National Forest before it was fully contained on August 26. The Loyalton Fire was notable for generating three fire tornadoes on August 15, necessitating first-of-their-kind warnings by the National Weather Service.
The LNU Lightning Complex fires were a large complex of wildfires that burned during the 2020 California wildfire season across much of the Wine Country area of Northern California – Lake, Napa, Sonoma, Solano, and Yolo Counties, from August 17 to October 2, 2020. The complex was composed of numerous lightning-sparked fires, most of which were small. While they ignited separately from each other, the Hennessey Fire eventually grew to merge with the Gamble, Green, Markley, Spanish, and Morgan fires, scorching 192,000 acres (777 km2) by itself, for a total burn area of 363,220 acres (1,470 km2) in the complex. The fire, which burned in the hills surrounding several large cities, such as Fairfield, Napa, and Vacaville, destroyed 1,491 structures and damaged a further 232. In all, six people were killed and another five injured. The LNU Lightning Complex is the seventh-largest wildfire in the recorded history of California.
The August 2020 California lightning wildfires were a series of 650 wildfires that ignited across Northern California in mid-August 2020, due to a siege of dry lightning from rare, massive summer thunderstorms, which were caused by an unusual combination of very hot, dry air at the surface, dry fuels, and advection of moisture from the remains of Tropical Storm Fausto northward into the Bay Area. These fires burned between 1,500,000 acres (6,100 km2) to 2,100,000 acres (8,500 km2) within a 2–3 week period. The August 2020 lightning fires included three enormous wildfires: the SCU Lightning Complex, the August Complex, and the LNU Lightning Complex. On September 10, 2020, the August Complex set a record for the single-largest wildfire in the modern history of California, reaching a total area burned of 471,185 acres (1,907 km2). On September 11, the August Complex merged with the Elkhorn Fire, another massive wildfire of 255,039 acres (1,032 km2), turning the August Complex into a monster wildfire of 746,607 acres (3,021 km2).
The August Complex was a massive wildfire that burned in the Coast Range of Northern California, in Glenn, Lake, Mendocino, Tehama, Trinity, and Shasta Counties. The complex originated as 38 separate fires started by lightning strikes on August 16–17, 2020. Four of the largest fires, the Doe, Tatham, Glade, and Hull fires, had burned together by August 30. On September 9, the Doe Fire, the main fire of the August Complex, surpassed the 2018 Mendocino Complex to become both the single-largest wildfire and the largest fire complex in recorded California history. On September 10, the combined Doe Fire also merged with the Elkhorn Fire and the Hopkins Fire, growing substantially in size. By the time it was extinguished on November 12, the August Complex fire had burned a total of 1,032,648 acres (417,898 ha), or 1,614 square miles (4,180 km2), about 1% of California's 100 million acres of land, an area larger than the state of Rhode Island.
The North Complex Fire was a massive wildfire complex that burned in the Plumas National Forest in Northern California in the counties of Plumas and Butte. Twenty-one fires were started by lightning on August 17, 2020; by September 5, all the individual fires had been put out with the exception of the Claremont and Bear Fires, which merged on that date, and the Sheep Fire, which was then designated a separate incident. On September 8, strong winds caused the Bear/Claremont Fire to explode in size, rapidly spreading to the southwest. On September 8, 2020, the towns of Berry Creek and Feather Falls were immediately evacuated at 3:15 p.m. PDT with no prior warning. By September 9, 2020, the towns of Berry Creek and Feather Falls had been leveled, with few homes left standing. The fire threatened the city of Oroville, before its westward spread was stopped. The fire killed 16 people and injured more than 100. The complex burned an estimated 318,935 acres (129,068 ha), and was 100% contained on December 3. The fire was managed by the U.S. Forest Service in conjunction with Cal Fire, with the primary incident base in Quincy. The North Complex Fire is the eighth-largest in California's history, and was the deadliest fire in the 2020 California wildfire season.
The River Fire was a destructive 2021 wildfire that burned 2,619 acres (1,060 ha) near Colfax in Nevada County and Placer County, California. The fire broke out on August 4, 2021, and burned 2,619 acres (1,060 ha) before it was fully contained on August 13, 2021. The River Fire destroyed 142 structures, damaged 21 more, and resulted in four injuries to firefighters and civilians. It was the fifth most destructive fire of California's 2021 wildfire season. The exact cause of the fire is unknown, but it was determined to have been of human origin by investigators who traced the ignition to a campground by the Bear River west of Colfax.
The Route Fire was a wildfire that burned during the 2022 California wildfire season, along Interstate 5 near the community of Castaic in Los Angeles County, California during a dramatic state-wide heatwave in late August and early September, 2022. At least seven firefighters sustained heat-related injuries, while two structures were destroyed and 5,208 acres (2,108 ha) burned.
The 2023 California wildfire season was a series of significant wildfires that burned in the U.S. state of California during the calendar year. According to statistics published by the California Department of Forestry and Fire Protection, a total of 7,127 fires burned a total of 324,917 acres. This was below the state's five-year average of 1,722,059 acres (696,893 ha) burned during the same period. The 2023 fire season followed the 2022 season, during which the number of fires and the resulting burned acreage were both below average. Four fatalities were reported during the 2023 fire season.
The Rocky Fire was a large wildfire in Lake, Colusa, and Yolo counties in Northern California in 2015. The fire burned 69,438 acres between its ignition on July 29 and its full containment on August 14. Caused by a malfunctioning water heater being used for illegal cannabis cultivation, the fire destroyed 96 structures and was the fifth largest fire of the 2015 fire season in California.
The Park Fire is an active wildfire in Butte and Tehama counties in Northern California. It was ignited on July 24 by an alleged act of arson in the city of Chico's Bidwell Park in Butte County. The fire defied initial suppression efforts and grew rapidly over the following days, burning into the Ishi Wilderness and the Lassen National Forest. Thousands of people in foothill communities evacuated, Lassen Volcanic National Park closed to the public, and 709 buildings have been destroyed.
The Borel Fire was a large and destructive wildfire started in July 2024 that burned south of Lake Isabella in Kern County, California. The fire burned a total of 59,288 acres before being contained on September 15, 2024. The fire was determined to be caused by a fatal car accident which caught fire and spread to the surrounding hillside.
The Nixon Fire was a sizable wildfire that burned in Riverside county in Southern California. It ignited on July 29, 2024, in the census-designated place of Aguanga in Riverside County. As of August 7, 2024, it has burned 5,222 acres and is 100 percent contained.
The Pedro Fire was a wildfire that burned in Mariposa and Tuolumne counties in California. The fire began on July 30, 2024, and the cause is currently under investigation. The fire prompted evacuations in multiple areas. The fire was contained on August 8, over a week after the fire began. The fire destroyed two structures and damaged 3 others.
The 2024 Wildcat Fire was a relatively large wildfire that burned in the Tonto National Forest, located in the U.S. state of Arizona. The fire burned 14,402 acres of land before being declared contained on June 3. It was the second-largest wildfire of the 2024 Arizona wildfire season, only behind the Freeman Fire.
The Pizona Fire was a wildfire that burned portions of the Inyo National Forest in Nevada. It covered 2,160 acres of land, and was the third-largest fire of the 2024 Nevada wildfire season. Over 188 personnel were assigned to the fire, and was 100% contained by firefighters and other agencies by July 5.
The Lake Fire was a large wildfire that burnt 38,664 acres of land in Santa Barbara County, California. It began on July 5, 2024, and was 100% contained as of August 4. The fire was the first to burn more than 20,000 acres as part of the 2024 California wildfire season, and was the fourth fire of the season to injure more than one person.
The Corral Fire was a sizeable wildfire that rapidly burned 14,168 acres across San Joaquin County in the U.S. state of California. It was active from June 1 to June 6, 2024, and was 100% contained as of August 2024. It was the first fire of the 2024 California wildfire season to burn more than 2,000 acres, and was the largest wildfire of the season until the Post Fire began 9 days after the Corral Fire was declared contained.
The Bridge Fire is an active wildfire in the Angeles National Forest, currently burning in Southern California's Los Angeles and San Bernardino counties. The fire began on September 8. As of September 19, 2024, the fire has burned 54,795 acres and is 53 percent contained. The cause of the fire is under investigation. It is the third-largest wildfire of California's 2024 fire season. It is the largest active wildfire in California and 4,409 structures are still threatened by the fire.
