The warning, which was originally issued for Santa Barbara County's south coast and mountains, will broaden at 6 p.m. to include the mountains of Los Angeles and Ventura counties, as well as the Santa Clarita and San Fernando valleys.
The warning is set to expire at 10 p.m. Sunday, the Weather Service said.
Wind gusts of 40-60 mph are expected across the 5 Freeway corridor, along with wind-prone coastal and valley areas of Los Angeles County. Isolated gusts could reach up to 75 mph near the Tejon Pass.
Strongest and damaging northerly winds tonight-Sunday bringing extreme fire danger to region. Wind gusts 40-60 mph across the I-5 corridor, as well as wind prone coastal/valley portions of LA county. Isolated gusts to 75 mph near Tejon Pass. #LAWeather #cawx #Socal pic.twitter.com/1fdGjykHaq— NWS Los Angeles (@NWSLosAngeles) October 19, 2019
Meanwhile, temperatures will be mild and sunny in the Southland on Saturday, but warmer conditions are around the corner.
Los Angeles and Orange counties will see sunny skies and a high of 79 on Saturday, then temperatures will warm up and fire conditions return on Sunday.
The valleys and Inland Empire will see some sunny skies Saturday with a high of 82, climbing to 86 on Sunday.
Download the ABC7 app for weather alerts: Click here for iOS devices | click here for Android devices. If you have the app, turn on push notifications and personalize the app. Click on My News from the bottom menu, then star the topics you'd like to follow and tap Done.
Live radar: abc7.la/LiveMEGADOPPLER
Download the free Accuweather app for iPhone and Android devices.
Share your weather pictures and video with #ABC7Eyewitness