The Tesla Fire, the brush fire burning in the eastern foothills of Livermore between Alameda and San Joaquin counties, has grown to over 500 acres as of Friday morning.
A Cal Fire spokesperson said the fire is 50% contained.
Firefighters will remain on scene throughout the evening and early Friday morning to work toward full containment of the fire.
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The brush fire began late Thursday afternoon in the area of Tesla and Corral Hollow roads in eastern Livermore.