Description: The fast-growing brush fire forced the closure of I-5 near Los Angeles as California braces for the dual onslaught of a heat wave and Labor Day weekend travel.

Description: Twelve lightning caused fires were identified on August 5th and are a result of thunderstorms that moved across the forest. Due to the aggressive initial attack of Six Rivers National Forest fire fighters and cooperating agencies there are now only 8 active fires.

Description: The fire began in Midpines, about 10 miles north of Mariposa and 30 miles west of Yosemite. All evacuation orders have been lifted in populated areas.

Description: A cluster of wildfires burning west of the massive McKinney Fire merged to form what fire officials dubbed the Yeti Complex. The complex is a combination of the China 2 Fire, the Alex Fire and other, smaller blazes believed to have been sparked by lightning strikes.

Deaths: At least four fire-related deaths, according to sheriff's officials

Damage: Multiple homes destroyed, hundreds in danger

Description: The fire started west of Walker Creek Bridge, on the south side of the Klamath River. Thousands of residents were ordered to evacuate the fire that has claimed at least four lives.

Description: The Red fire was discovered on August 4 between Red Creek and Illilouette Creek at 7,800 ft elevation. It is a lightning caused fire that is burning in the 2001 Hoover fire footprint.

Description: The Rodgers fire was discovered on August 8, 2022 northwest of Rodgers Canyon and southwest of Pleasant Valley at 8,100 ft elevation. This is a lightning caused fire and fire crews are assessing natural barriers, like granite, to confine and contain the fire. There is no immediate threat to structures or critical infrastructure.

Description: The fire is burning near Barret Lake Road and Highway 94, near Barret Lake.

Description: The Walker Fire burning on the east side of Highway 101 near Willits was around 25 acres and growing at “a moderate rate of spread” just after 5 p.m., Cal Fire said. Local law enforcement issued evacuation warnings for residents of the Pine Mountain and Ridgewood Road subdivisions.

Description: The fire is burning at Owl Creek Road and Lost Ranch Way, West of Nevada City.

Description: The blaze started at about 2:30 p.m. Monday near the 7100 block of Roblar Road in Petaluma.

Description: Residents living in the area of Golden Eagle were ordered to evacuate because of a vegetation fire blazing on Foothill Road between Bernal Avenue and Castlewood Drive, Pleasanton Police Department officials said,

Description: A vegetation fire in Vacaville prompted evacuations in Solano County on Thursday afternoon, authorities said.

Damage: One structure was destroyed

Description: The wildfire broke out along the Big Sur coast. All road closures and evacuation orders have been lifted.

Description: The fire broke out at Airport Road and East Line Street, east of Bishop. All evacuation orders have been lifted.

Description: The fire started in a drainage bottom and spread uphill, consuming approximately 500 acres of vegetation. The fire is under investigation.

Description: The vegetation fire started at Quail Canyon Rd and Pleasents Valley Rd, southwest of Winters and north of Vacaville. Evacuation orders were issued for residents in the area.

Description: The fire started north of the city of Colusa and burned along both sides of the Sacramento River.

Description: The fire triggered evacuation orders for residents along Soda Canyon Road in rural Napa County, officials said.

Description: The fire started at Marsh Creek Road and Walnut Boulevard, South of Brentwood in Contra Costa County.

Description: The fire was located at Interstate 5 and Grapevine Rd in the Grapevine in Southern California.

Description: The fire was located at Highway 2 and Sheep Creek Road, northeast of Wrightwood

Description: The fire started at Brandie Drive and Loma Rica Road, 15 miles northeast of Marysville

Description: The fire burned in a remote area northwest of Campbellville

Description: The fire started east of Marron Valley near Border Road.

Description: The fire started at Rancho Tehema Road and Alpine Drive, northwest of Corning

Description: The fire, which sparked at the edge of a nature preserve in unincorporated San Mateo County, prompted the evacuation of 1,133 homes, officials said.

Description: The fire burned at Edmonston Pump Plant Road, east of Interstate 5, south of Bakersfield

Description: This fire was located at Highway 99 and Deniz Brothers Lane in Butte County.

Description: The fire began at Carquinez Scenic Dr and Canyon Lake Dr, east of Crokett. Evacuation warnings were in place.

Description: A brush fire on Tesla Road east of Livermore burned more than 500 acres.

Description: The fire began at Santa Nella near O'Neill Forebay in Merced County.

Description: The fire began at Clay Street and General Road in Jurupa Valley.

Description: The Redwood Fire was one of multiple small grass fires along the highway, according to the Marin County Sheriff’s Office.

Description: The fire burned at County Road 306 and County Road 315, north of Elk Creek.

Description: The fire started at Husana Road and Mary Hall Road, north of Nipomo.

Description: The fire was located at Rices Crossing R and Cranston roads, south of Dobbins. It was reported that 13 firefighters were injured battling the blaze.

Damage: 16 structures destroyed, six structures damaged.

Description: The fire at Peter Pan Gulch Road and Olinda Road in Anderson destroyed 16 structures.

Description: Chicken Ranch Road, Southwest of Jamestown. All evacuation orders have been lifted.

Description: The fire began at Electra Road and Highway 49 southeast of Jackson and there's been one confirmed injury as a result.

Description: The fire started near Hwy 140 & Agua Fira Rd, 3 miles west of Mariposa and resulted in three destroyed structures.

Description: The wildfire ignited in the dry, grassy hills of Castro Valley near Interstate 580. It was threatening structures in the area.

Description: Multiple 911 telephone calls reporting smoke visible from the Mariposa Grove area, near the Washburn Trail, led to a full attack response including Yosemite Fire resources and cooperators.

Description: The fire is burning at Highway 190 and NF 20S82, east of Springville.

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Fires are labeled when they are larger than 500 acres, cause damage to property, or when people are injured or killed as a result of the fire.

Fire perimeters are based on geographic data from the National Interagency Fire Center, updated once an hour. This map displays all current wildfire fire perimeters available through NIFC that have not been 100% contained. Perimeters do not include prescribed or incident complex fires. Perimeters are not available for every incident.

Fire perimeters for incidents before June 18, 2021 are based on infrared and thermal imaging from NASA's MODIS and VIIRS-I products.

The perimeters are intended to provide a picture of the scope and extent of the fires in California, as well as parts of Nevada and Oregon, with the most current data possible. They are an approximation and do not include all areas affected by fire, nor do they indicate with certainty an area was affected. CalFire and others use this data to help identify fires and their hot spots. But because of the distance of the satellites, the nature of the measurements and obfuscation by smoke, the resolution is coarse and not 100 percent accurate.

The Moderate Resolution Imaging Spectroradiometer (MODIS) displays fire detection data and uses fire and thermal anomalies data compiled via MODIS satellites Terra and Aqua. Thermal information is collected at 1,000-meter spatial resolution. The identification of a "fire" by MODIS does not necessarily mean the entire area represented is on fire. The identification of a fire can be the result of a hot fire in a relatively small area or a cooler fire over a larger area. At this time, there is no way to discriminate between these two possibilities.

The Visible Infrared Imaging Radiometer Suite (VIIRS-I) provides data from sensors aboard the joint NASA/NOAA Suomi National Polar-orbiting Partnership satellite. The 375-meter spatial resolution provides a greater response over fires of relatively small areas and provides improved mapping of large fire perimeters. VIIRS-I also has improved nighttime performance.

Hot spots are locations identified by satellite analysts from the National Oceanic and Atmospheric Administration (NOAA).

The hot spots are an approximation and do not include all areas affected by fire, nor do they indicate with certainty an area was affected. CalFire and others use this same data to help identify fires and their hot spots. But because of the distance of the satellites, the nature of the measurements and obfuscation by smoke, the resolution is coarse and not 100% accurate.

NOAA's Hazard Mapping System Fire and Smoke Product (HMS) is based on locations of fires and significant smoke plumes detected by meteorological satellites. Hot spots are updated between 5 a.m. and 7 a.m. every 30 minutes, and otherwise as time permits. Hot spots should be considered points with no radius or resolution. The current map may contain hot spots up to 48 hours old.

Paula Friedrich • paula.friedrich@sfchronicle.com  • @pauliebe

Evan Wagstaff • ewagstaff@sfchronicle.com  • @EvanWagstaff