A massive fire erupted Thursday, Oct 2 at the Chevron El Segundo Refinery , one of California’s largest fuel producers, prompting concerns about a potential spike in gas prices across the state.

The blaze broke out around 9:30 p.m. and was extinguished by Friday morning, according to Chevron. The refinery processes 269,000 barrels of crude oil per day—about 16% of California’s gasoline supply and 40% of Southern California’s jet fuel.

While the full extent of the damage remains unclear, experts say the incident could lead to a 10 to 20 cent per gallon increase in gas prices, depending on how long the facility remains offline.

“There’s really no way to pull that amount of fuel offline, and there’d be zero impact,” Matt McClain, a petroleum analyst at GasBuddy, told SFGATE . “It’ll cr

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