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,

California’s largest wildfire of the year grew to an estimated 70,801 acres Friday, producing smoke that has affected millions of residents across the southern part of the state. The Madre Fire in San Luis Obispo County erupted early Wednesday afternoon near the small town of New Cuyama along Highway 166 on the Carrizo Plain,