PowerPoint Show by Andrew

A punishing heat wave across the American Southwest along with extremely dry conditions and sundowner winds has spawned a number of early season wildfires in Southern California, including the Sherpa Fire in Los Padres National Forest, which has burned nearly 8,000 acres in less than a week.

Twin fires northeast of Los Angeles have forced mandatory evacuations along several coastal valleys.

Smoke from wildfires burning in Angeles National Forest fills the sky behind the Los Angeles skyline on June 20, 2016.

A DC-10 air tanker drops fire retardant on June 20, 2016, in Duarte, Calif.

Firefighters battle a wildfire in temperatures well over 100 degrees Fahrenheit as it burns near Potrero, California, on June 20, 2016.

An emu runs to escape an approaching wildfire as it burns near Potrero, California, on June 20, 2016.

A firefighter watches as a helicopter makes a drop on a wildfire in Azusa, California, on June 20, 2016.

Jimmy Romo, 73, leads horses from his ranch as a wildfire burns in Azusa, California, on June 20, 2016.

Flames come close to a home near Potrero on June 20, 2016.

Members of the elite Dalton Hotshots crew hike back to their truck at the end of a shift at the Sherpa Fire near Santa Barbara, California, on June 18, 2016.

A fire-fighting helicopter passes through smoke under the sun as it helps battle a wildfire near Potrero, California, on June 20, 2016.

Firefighters battle the expanding Sherpa Fire near Santa Barbara, California, on June 17, 2016.

A freshly scorched landscape, seen in the early morning hours of June 18, 2016, at the Sherpa Fire near Santa Barbara.

Embers fly around a firefighter with a hose on June 17, 2016, at the Sherpa Fire near Santa Barbara.

Firefighters stand watch over the Sherpa Fire in the early morning hours of June 18, 2016, near Santa Barbara.

Smoke from one of two wildfires in the Angeles National Forest rises above homes in Azusa, California, on June 20, 2016.

A British Aerospace BAe-146 belonging to Neptune Aviation makes a Phos-Chek drop on June 18, 2016, on wildfires in Santa Barbara County, Calif.,

Trees are covered in red Phos-Chek fire retardant dropped from firefighting aircraft to help protect homes and further contain the Fires on June 18, 2016.

A wildfire burns around homes built near a hilltop in Azusa, California, on June 20, 2016.

Smoke billows in the late afternoon sky from the Sherpa Fire burning in the coastal mountains on June 16, 2016, south and east of Buellton, California.

A firefighting Grumman S-2T aircraft drops fire retardant on the Sherpa Fire near Santa Barbara on June 18, 2016.

A wildfire burns on a hill near Azusa, California, on June 20, 2016.

Firefighters use air assets to battle a wildfire as it burns in the hills near Potrero, California, on June 20, 2016.

A firefighter from Chino Hills keeps watch on a wildfire as it burns near Potrero, California, on June 20, 2016.