At least 10 people are dead and many more injured as several fires broke out across Southern California amid historically dry and windy conditions.

Fierce winds fueled new fires and made it harder to contain the largest blazes, which have destroyed whole neighborhoods and have become some of the most devastating in California’s history.

A new fire — the Kenneth Fire — erupted Thursday afternoon, so far spreading across 960 acres in Los Angeles and Ventura counties. The California Department of Forestry and Fire Protection says that blaze is 35% contained.

The deadly wildfires roaring through Los Angeles County entered a fourth day on Friday. At least 10 people have been killed, about 150,000 are under mandatory evacuation orders and more than 10,000 homes and other structures have been destroyed,