The Clay Fire was one of several fires that broke out in Southern California Tuesday as parts of the region sees red flag warnings through Thursday.

Clay Fire initially started today at 5 p.m. in Riverside County. After being active for six hours, it has burned 38.5 acres. As of Tuesday evening, 40% of the fire was brought under containment by a crew of 165 firefighters. The cause of it remains under investigation.

Firefighters in Riverside County battled a wildfire that erupted in the Santa Ana river bottom Tuesday night, prompting evacuation warnings for residents in nearby homes. The Clay Fire, first reported at 5 p.

Continued strong winds and dry conditions on Wednesday morning rapidly spread a fire near Castaic Lake in northern Los Angeles County and has burned through 8,096 acres.

A fast-moving wildfire exploded to roughly 10,200 acres near the Los Angeles County community of Castaic Wednesday morning, prompting mandatory evacuation orders and road closures, authorities said.