Burnt structures are seen at the historic Stornetta Dairy along Highway 121 during the Nuns Fire in Sonoma, California, U.S., October 9, 2017.

Smoke rises from a playground in front of Dunbar Elementary School during the Nuns Fire in Sonoma, California, U.S., October 10, 2017.

Molten metal is seen next to a car burned by the Tubbs Fire in Santa Rosa, California, U.S., October 10, 2017.

A residential neighborhood destroyed by the Tubbs Fire is seen along Fountaingrove Parkway in Santa Rosa, California, U.S., October 10, 2017.

A destroyed home is seen at a residential neighborhood along Fountaingrove Parkway during the Tubbs Fire in Santa Rosa, California, U.S., October 10, 2017.

Harper Bishop (L) points to a section of his home as wife Cristy surveys their home destroyed by the Tubbs Fire in Santa Rosa, California, U.S., October 10, 2017.

A man takes a photograph of structures destroyed by the Nuns Fire along Highway 121 in Sonoma, California, U.S., October 9, 2017.

A tree stands amidst smoke and charred vegetation along Highway 12 during the Nuns Fire in Sonoma, California, U.S., October 10, 2017.

A destroyed residential neighborhood is seen from a burned out vehicle during the Tubbs Fire in Santa Rosa, California, U.S., October 10, 2017.

A Jack O' Lantern is seen at a residential neighborhood destroyed by the Tubbs Fire in Santa Rosa, California, U.S., October 10, 2017.

A group of retired police officers works through the ruins to look for a police badge for fellow retired officer Tom Francois after his home was destroyed by the Tubbs Fire in Santa Rosa, California, U.S., October 10, 2017.

A charred pomegranate is seen at a home destroyed by the Tubbs Fire in Santa Rosa, California, U.S., October 10, 2017.

Harper Bishop and wife Cristy survey their home destroyed by the Tubbs Fire in Santa Rosa, California, U.S., October 10, 2017.

A woman pushes a cart of items amidst at the destroyed Journey's End Mobile Home Park during the Tubbs Fire in Santa Rosa, California, U.S., October 9, 2017.

Remains of a burned property is seen along Highway 12 during the Nuns Fire in Sonoma, California, U.S., October 10, 2017.

A residential neighborhood destroyed by the Tubbs Fire is seen along Fountaingrove Parkway in Santa Rosa, California, U.S., October 10, 2017.

Retired police officer Kevin Austin places an American flag outside the destroyed home owned by fellow officer Tom Francois during the Tubbs Fire in Santa Rosa, California, U.S., October 10, 2017.

A statue stands amongst a home destroyed by the Tubbs Fire in Santa Rosa, California, U.S., October 10, 2017.

Burnt structures are seen at the historic Stornetta Dairy along Highway 121 during the Nuns Fire along Napa Road in Sonoma, California, U.S., October 9, 2017.

A burnt tree stands amidst the destroyed Journey's End Mobile Home Park during the Tubbs Fire in Santa Rosa, California, U.S., October 9, 2017. REUTERS/Stephen Lam

A water heater stands amidst remains of a home destroyed by the Nuns Fire along Napa Road in Sonoma, California, U.S., October 9, 2017.

A damaged sign is seen along Highway 12 during the Nuns Fire in Sonoma, California, U.S., October 10, 2017.

Burned out cars rest on driveways at a residential neighborhood along Fountaingrove Parkway during the Tubbs Fire in Santa Rosa, California, U.S., October 10, 2017.

Remains of a burned property is seen along Highway 12 during the Nuns Fire in Sonoma, California, U.S., October 10, 2017.

A residential neighborhood destroyed by the Tubbs Fire is seen along Fountaingrove Parkway in Santa Rosa, California, U.S., October 10, 2017.

Retired officer Tom Francois places his officers' badges onto the bed of his truck after he and a group of retired officers recovered them amongst the ruins of his home destroyed by the Tubbs Fire in Santa Rosa, California, U.S., October 10, 2017.

A burned out K-Mart store destroyed by the Tubbs Fire is seen in Santa Rosa, California, U.S., October 10, 2017. REUTERS/Stephen Lam - RC1A23B28F80

Water hoses are seen on a post box at a neighborhood destroyed by the Tubbs Fire in Santa Rosa, California, U.S., October 10, 2017.