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 Madre Fire burning in the eastern corner of San Luis Obispo County was 30% containment as of Sunday morning. In a post on its X account, Cal Fire SLO also announced that the massive fire is now 30% contained. The cause of the fire is still under investigation.

Madre Fire initially started 1:07 p.m. July 2 in San Luis Obispo County, California. Since its discovery four days ago, it has burned 79,936 acres. A crew of 1,122 firefighters effectively contained 30% of the fire by Sunday morning. The cause of it remains under investigation.