LOS ANGELES (CBSLA) — The 2019 wildfire season had been relatively quiet in Southern California until a strong Santa Ana wind event hit the area Oct. 9 sparking a number of brush fires that grew as wind gusts increased and relative humidity decreased.

The red flag warning, originally set to expire Friday evening, was extended through 6 p.m. Saturday for mountains in Los Angeles and Ventura counties, as well as the Ventura, San Fernando and Santa Clarita valleys.

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As of Saturday morning, the Saddle Ridge fire was the largest fire burning more than 7,500 acres in the Sylmar, Granda Hills and Porter Ranch area and was 19% contained with mandatory evacuations still in place.

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Evacuations were also in place for residents in the Calimesa area as the Sandalwood fire — which was at 823 acres and 25% contained — continued to burn.

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Keep an eye here for the latest on this week’s wildfires.