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.

Here’s a closer look at what to know about the fires.