A wildfire that ignited Friday in Southern California has exploded to tens of thousands of acres as nearly 2,000 firefighters work to get the blaze under control.

A wildfire in Southern California has burned over 72,000 acres in Santa Barbara and San Luis Obispo counties, officials said.

At the end of Sunday, Aug. 3, the wildfire was mapped at 65,061 acres (101 square miles) — an increase of more than 25,000 ...