Cal Fire personnel set a backfire during the Hennessey fire in Napa County, Monday, August 17, 2020. (Kent Porter//The Press Democrat via AP)

Samantha Garvin, a personal trainer, gives her 11th "Make a difference Monday," by delivering delivers bagged lunches and cold bottled water to the homeless camping at Echo Park in Los Angeles Monday, Aug. 17, 2020. A heat wave brought triple-digit temperatures and raised wildfire danger and fears of coronavirus spread, a significant concern in a state with more than 621,000 confirmed cases. Public health officers urged people to follow masks and social distancing orders if they head outdoors. (AP Photo/Damian Dovarganes)

A cyclist rides through the pier plaza in Huntington Beach, Calif., on Monday, August 17, 2020. With much of the region in a heat wave, temperatures at the beach were in the low 80's. (Paul Bersebach/The Orange County Register via AP)

Samantha Garvin, a personal trainer, right, makes her "Make a difference Monday," a personal project delivering bagged lunches and cold bottled water to homeless people camping at Echo Park in Los Angeles Monday, Aug. 17, 2020. A heatwave brought triple-digit temperatures and raised wildfire danger and fears of coronavirus spread, a significant concern in a state with more than 621,000 confirmed cases. Public health officers urged people to follow masks and social distancing orders if they head outdoors. (AP Photo/Damian Dovarganes)

Gov. Gavin Newsom speaks during a tour of a cooling center with Sacramento Mayor Darrell Steinberg at the Tsakopoulos Library Galleria on Tuesday, Aug. 18, 2020, in Sacramento, Calif. Gov. Newsom declared an emergency Tuesday over wildfires burning throughout California as the state's power grid operator pleaded with residents and businesses to continue conserving energy to avoid rolling blackouts. (Paul Kitagaki Jr./The Sacramento Bee via AP, Pool)

California Gov. Gavin Newsom speaks during a tour of a cooling center with Sacramento Mayor Darrell Steinberg at the Tsakopoulos Library Galleria on Tuesday, Aug. 18, 2020, in Sacramento, Calif. Newsom declared an emergency Tuesday over wildfires burning throughout California as the state's power grid operator pleaded with residents and businesses to continue conserving energy to avoid rolling blackouts. (Paul Kitagaki Jr./The Sacramento Bee via AP, Pool)

The Hennessey fire burns in to the night, Monday, Aug. 17, 2020, in Napa County, California. (Kent Porter/The Press Democrat via AP)

A student works on her skills during an acrobatics class near the pier in Huntington Beach, CA on Monday, August 17, 2020. Instructors at the Orange County Performing Arts Academy decided to bring the class to the beach from Anaheim Hills to beat the heat and give the students an end of the summer treat. (Paul Bersebach/The Orange County Register via AP)

Zoe Olea, 2, plays with bubbles at Echo Park in Los Angeles Monday, Aug. 17, 2020. A heat wave brought triple-digit temperatures and raised wildfire danger and fears of coronavirus spread, a significant concern in a state with more than 621,000 confirmed cases. Public health officers urged people to follow masks and social distancing orders if they head outdoors. (AP Photo/Damian Dovarganes)

Chase Taber of the Cal Fire monitors a firing operation during the Hennessey fire on Ridge Ranch Road in Napa County, California, Monday, Aug. 17, 2020. (Kent Porter/The Press Democrat via AP)

Early beachgoers secure spots on the shore at Santa Barbara, Calif., on Sunday, Aug. 16, 2020, as the superyacht Bravo Eugenia lies offshore. Californians packed beaches, lakes and recreation areas Sunday to seek relief from a record heat wave that strained the electricity grid and threatened to trigger a third round of rolling power outages. The heat wave brought triple-digit temperatures and raised wildfire danger and fears of coronavirus spread — a major concern in a state that has seen more than 621,000 confirmed cases. Public health officers urged people to follow mask and social distancing orders if they head outdoors. (AP Photo/John Antczak)

Yo-Yo knocks over her bucket of ice as she playfully sorts food hidden inside at the OC Zoo in Orange on Tuesday, August 18, 2020. Zoo Manager Donald Zeigler said ice treats are a good way to keep the animals cool and engaged. Misters are also scattered throughout the zoo to make scorching days more pleasant for staff, animals and the public. But it is currently closed because of the coronavirus pandemic. (Mindy Schauer/The Orange County Register via AP)

Tony Leonardini, a resident of Chiles Valley, works on a spot fire during the Hennessy fire as thunderstorm winds fan the fire, Monday, August 17, 2020 in Napa County, California. California firefighters are battling destructive wildfires as a lengthening heat wave roasts the state. (Kent Porter/The Press Democrat via AP)

California Gov. Gavin Newsom, left, and Sacramento Mayor Darrell Steinberg tour a cooling center at the Tsakopoulos Library Galleria, Tuesday, Aug. 18, 2020, in Sacramento, Calif. Newsom declared an emergency Tuesday over wildfires burning throughout California as the state's power grid operator pleaded with residents and businesses to continue conserving energy to avoid rolling blackouts. (Paul Kitagaki Jr./The Sacramento Bee via AP, Pool)

An air tanker makes a drop on a spot fire from the Hennessey fire over lower Chiles Valley Road, Monday, Aug. 17, 2018 in Napa County, California. (Kent Porter/The Press Democrat via AP)

California Gov. Gavin Newsom speaks during a tour of a cooling center with Sacramento Mayor Darrell Steinberg, at the Tsakopoulos Library Galleria on Tuesday, Aug. 18, 2020, in Sacramento, Calif. Newsom declared an emergency Tuesday over wildfires burning throughout California as the state's power grid operator pleaded with residents and businesses to continue conserving energy to avoid rolling blackouts. (Paul Kitagaki Jr./The Sacramento Bee via AP, Pool)