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

The Madre fire burning in San Luis Obispo County has grown to become the largest wildfire California has seen this year. It comes after Southern California was ravaged by wildfires in January, which resulted in the widespread destruction of homes and the deaths of at least 29 people.

The Madre Fire is California's largest blaze so far this year, igniting in dry brush Wednesday in southeastern San Luis Obispo County. By Friday, it had swiftly grown to nearly 71,000 acres, and there was just 10% containment, according to Cal Fire.