Madre Fire initially started 1:07 p.m. July 2 in San Luis Obispo County, California. Since its discovery six days ago, it has burned 80,603 acres. A crew of 1,573 firefighters effectively contained 35% of the fire by Tuesday morning. The cause of it remains under investigation.

The largest fire in the nation continued to burn in southeastern San Luis Obispo County on Tuesday morning — injuring one firefighter. Firefighters held the line through the night, preventing the blaze from significantly expanding.