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 79,936 acres and is 30% contained as of Sunday, fire officials said.

The blaze is burning in a rural area of San Luis Obispo County, in the central coast, but its smoke has spread to nearby counties.

The fire has prompted evacuation orders, warnings and highway closures in San Luis Obispo County about 100 miles north of Los Angeles.