Yosemite National Park is a national park in California. It is bordered on the southeast by Sierra National Forest and on the northwest by Stanislaus National Forest. The park is managed by the National Park Service and covers 759,620 acres in four counties – centered in Tuolumne and Mariposa, extending north and east to Mono and south to Madera. Designated a World Heritage Site in 1984, Yosemite is internationally recognized for its granite cliffs, waterfalls, clear streams, giant sequoia groves, lakes, mountains, meadows, glaciers, and biological diversity. Almost 95 percent of the park is designated wilderness. Yosemite is one of the largest and least fragmented habitat blocks in the Sierra Nevada.
Human habitation in the Sierra Nevada region of California reaches back 8,000 to 10,000 years ago. Historically attested Native American populations, such as the Sierra Miwok, Mono and Paiute, belong to the Uto-Aztecan and Utian phyla. In the mid-19th century, a band of Native Americans called the Ahwahnechee lived in Yosemite Valley. The California Gold Rush greatly increased the number of non-indigenous people in the region. Tensions between Native Americans and white settlers escalated into the Mariposa War. As part of this conflict, settler James Savage led the Mariposa Battalion into Yosemite Valley in 1851, in pursuit of Ahwaneechees led by Chief Tenaya. The California state military forces burned the tribe's villages, destroyed their food stores, killed the chief's sons, and forced the tribe out of Yosemite. Accounts from the Mariposa Battalion, especially from Dr. Lafayette Bunnell, popularized Yosemite Valley as a scenic wonder.
The California Department of Forestry and Fire Protection is the fire department of the California Natural Resources Agency in the U.S. state of California. It is responsible for fire protection in various areas under state responsibility totaling 31 million acres, as well as the administration of the state's private and public forests. In addition, the department provides varied emergency services in 36 of the state's 58 counties via contracts with local governments. The department's current director is Joe Tyler, who was appointed March 4, 2022, by Governor of California Gavin Newsom.
The 2008 California wildfire season was one of the most devastating in the state of the 21st century. While 6,255 fires occurred, about two-thirds as many as in 2007, the total area burned— 1,593,690 acres —far exceeded that of previous years.
The 2009 California wildfires were a series of 9,159 wildfires that were active in the US state of California, during the year 2009. The fires burned more than 422,147 acres of land from early February through late November, due to Red Flag conditions, destroying hundreds of structures, injuring 134 people, and killing four. The wildfires also caused at least US$134.48 million in damage. Although the fires burned many different regions of California in August, the month was especially notable for several very large fires which burned in Southern California, despite being outside of the normal fire season for that region.
The Rim Fire was a massive wildfire that started in a remote canyon in the Stanislaus National Forest in California's Tuolumne County. The fire ignited on August 17, 2013, amid the 2013 California wildfire season, and burned 257,314 acres in largely remote areas of the Sierra Nevada, including a large portion of Yosemite National Park. The Rim Fire was fully contained on Thursday, October 24, 2013, after a nine-week suppression effort by firefighters. Due to a lack of winter rains, some logs smoldered in the interior portion of the fire footprint throughout the winter, and more than a year passed before the fire was declared totally extinguished in November 2014.
2014 saw several notable wildfires igniting in California, especially during the month of May, when multiple fires were ablaze concurrently in Southern California, and during September, when several massive wildfires were burning in Northern California. In the context of the 2012–13 North American drought, as well as powerful Santa Ana winds, weather conditions were ideal for wildfires. A total of 7,865 wildfires ignited throughout the year, which burned at least 625,540 acres (2,531.5 km2) of land. The wildfires caused a total of 146 injuries and 2 fatalities, in addition to causing at least $204.05 million in damage.
The May 2014 San Diego County wildfires were a swarm of 20 wildfires that erupted during May 2014, in San Diego County, California, during severe Santa Ana Wind conditions, historic drought conditions, and a heat wave. The main event during mid-May was preceded by a precursor fire that ignited on May 5. The Bernardo Fire has been declared accidental, and officials believe the Cocos Fire was intentionally set. The causes of the other fires are still under investigation by multiple agencies, and a joint task force was formed to coordinate the investigations and facilitate communications. Six injuries and one fire-related fatality were reported.
The Soberanes Fire was a large wildfire that burned from July to October 2016 in the Santa Lucia Mountains of Monterey County, California. It destroyed 57 homes and killed a bulldozer operator, and cost about $260 million to suppress, making it at the time the most expensive wildfire to fight in United States history. At the fire's peak, over 5,000 personnel were assigned to the blaze. The fire was the result of an illegal campfire in Garrapata State Park. By the time it was finally extinguished, the fire had burned 132,127 acres (53,470 ha) along the Big Sur coast in the Los Padres National Forest, Ventana Wilderness, and adjacent private and public land in Monterey County, ranking it 18th on the list of the largest California wildfires in terms of acreage burned.
In terms of property damage, 2017 was the most destructive wildfire season on record in California at the time, surpassed by only the 2018 season and the 2020 season, with a total of 9,560 fires burning 1,548,429 acres (6,266.27 km2) of land, according to the California Department of Forestry and Fire Protection, including five of the 20 most destructive wildland-urban interface fires in the state's history. Throughout 2017, the fires destroyed or damaged more than 10,000 structures in the state, a higher tally than the previous nine years combined. State data showed that the large wildfires killed 47 people – 45 civilians and 2 firefighters – almost higher than the previous 10 years combined. The total property damage and total amount of burned land were both surpassed by the 2018 California wildfires.
The Detwiler Fire was a wildfire that burned across Highway 49, east and south of Lake McClure, in Mariposa County, California. Ignited shortly before 4 p.m. on Sunday, July 16, 2017, the fire consumed up to 2,500 acres (1,000 ha) within its first day of burning. By Thursday morning, on July 20, the fire was over 70,000 acres (28,000 ha) in size with only 7 percent containment.
The Ferguson Fire was a major wildfire in the Sierra National Forest, Stanislaus National Forest and Yosemite National Park in California in the United States. The fire was reported on July 13, 2018, burning 96,901 acres (392 km2), before it was 100% contained on August 19, 2018. Interior areas of the fire continued to smolder and burn until September 19, 2018, when InciWeb declared the fire to be inactive. The Ferguson Fire was caused by the superheated fragments of a faulty vehicle catalytic converter igniting vegetation. The fire, which burned mostly in inaccessible wildland areas of the national forest, impacted recreational activities in the area, including in Yosemite National Park, where Yosemite Valley and Wawona were closed. The Ferguson Fire caused at least $171.2 million in damages, with a suppression cost of $118.5 million and economic losses measuring $52.7 million. Two firefighters were killed and nineteen others were injured in the fire.
The Mineral Fire was a wildfire that burned in Coalinga Mineral Springs, west of Coalinga in Fresno, California in the United States. The fire was first reported on July 13, 2020 and burned an estimated 29,667 acres (12,006 ha) and before being fully contained on July 26. The fire threatened the communities of Los Gatos Creek Road from Indian Springs to Union Carbide Road and Bingham Springs. It resulted in the mandatory evacuations of Los Gatos Creek Road and Bingham Springs and led to the complete closure of State Route 198 from Firestone Ave. to the Monterey County Line. They were subsequently lifted on July 20.
The El Dorado Fire was a wildfire that burned 22,744 acres in San Bernardino and Riverside counties of California from September to November 2020. It was ignited on September 5 by a pyrotechnic device at a gender reveal party in El Dorado Ranch Park; it quickly spread to the San Gorgonio Wilderness Area of the San Bernardino National Forest. Burning over a 71-day period, the fire destroyed 20 structures and resulted in one firefighter fatality, for which the couple hosting the party were charged with involuntary manslaughter.
The SQF Complex fire—also called the SQF Lightning Complex—was a wildfire complex that burned in Tulare County in Central California in 2020. Comprising the Castle and Shotgun fires, it affected Sequoia National Forest and adjacent areas. Both fires began on August 19, 2020, and burned a combined total of 175,019 acres before the complex as a whole was declared 100 percent contained on January 6, 2021. In the course of the fires, 232 structures were destroyed. There were no fatalities.
The Washburn Fire was a wildfire that burned in Yosemite National Park near the Mariposa Grove of giant sequoias. The fire was reported on July 7, 2022, in the lower Mariposa Grove area near the Washburn trail, for which the fire is named. The fire quickly attracted national attention due in part to the role the Mariposa Grove played in the establishment of Yosemite National Park and the National Park Service.
The Oak Fire was a destructive wildfire that burned north of the community of Bootjack in Mariposa County, California and in the Sierra National Forest, during the 2022 California wildfire season. The fire was reported on July 22, 2022, and burned 19,244 acres (7,788 ha) before being fully contained on September 2, 2022. On June 16, 2023, a 71-year-old man was arrested on suspicion of arson for starting the fire.
The Red Fire was a wildfire that burned in Yosemite National Park, Mariposa County, during California's wildfire season in 2022. Lightning started the fire, which was then discovered on August 4. The fire burned 8,364 acres (3,385 ha) before it was declared completely contained on September 20. The Red Fire burned within the footprint of the 2001 Hoover Fire.
The 2012 Reading Fire was a large wildfire in Lassen Volcanic National Park and the Lassen National Forest in Northern California. Ignited by a lightning strike on July 23, the fire was managed for ecological benefits by park officials until shifts in the weather caused the fire to jump its intended control lines. The Reading Fire ultimately burned 28,079 acres, partially outside the borders of the park, before it was fully contained on August 22, 2012.
The Harlow Fire was a large wildfire in Central California's Mariposa and Madera counties in mid-July, 1961. The fire ignited on July 10 and burned rapidly, covering 43,329 acres before it was fully surrounded by containment lines on July 13 and fully controlled on July 15. During those six days the Harlow Fire destroyed 106 buildings, devastating the rural communities of Ahwahnee and Nipinnawasee in the foothills of the Sierra Nevada to the west of Yosemite National Park and the Sierra National Forest. Two residents of Ahwahnee were killed while fleeing the fire in their car.
