A massive California wildfire has prompted evacuation orders and a highway closure. The Madre Fire ignited Wednesday afternoon in San Luis Obispo County, according to Cal Fire. It has since grown to 79,630 acres and is 10% contained as of Saturday, fire officials said.

The Madre Fire is the largest wildfire in California in 2025 — surpassing the Los Angeles-area fires that devastated parts of the region in January.

The fire in a wilderness area northeast of Los Angeles exploded in size as dry, hot weather Thursday raised the fire risk for large portions of the state.