UPDATE (5:06 p.m.) - CAL FIRE SLO reports that due to more accurate mapping, the size of the fire has been revised to 633 acres.
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UPDATE (3:44 p.m.) - Forward progress of the fire has been stopped at approximately 500 acres, according to CAL FIRE SLO.
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UPDATE (1:55 p.m.) - CAL FIRE SLO reports that the fire has burned approximately 80 acres.
The cause is under investigation.
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(1:44 p.m.) - Firefighters are at the scene of a brush fire in eastern San Luis Obispo County.
The fire was first reported just before 1 p.m. off of Soda Lake Road south of Highway 58.
Live footage from an ALERTCalifornia wildfire camera showed a large plume of smoke in the area.
According to CAL FIRE SLO, as of 1:40 p.m., the fire had burned 60 acres in mostly grass. No structures are threatened.