(CNN) -- Firefighters hope to quell a raging wildfire on Friday that has already scorched 800 acres in southern California.
The wildfire, which started Thursday afternoon in the hills of Riverside County, burned dangerously close to homes.
Firefighters said the blaze was 50 percent contained Thursday and no evacuations had been ordered, said CalFire, the state fire agency.
The blaze had the potential to burn 1,000 acres before firefighters could get it under control, fire officials said. Weather conditions could also hamper efforts.
The National Weather Service issued a red flag warning for parts of southern California for Friday, which means strong winds and low humidity could create dangerous fire situations.
CNN's Sonya Hamasaki contributed to this report.