Gas prices are inching up again on the West Coast.
Gas prices are inching up again on the West Coast. - 
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The U.S. Energy Information Administration releases its weekly numbers on oil supplies on Thursday. The agency also surveys gas station prices, and they rose 14 cents a gallon nationally last week. In California, prices spiked up 37 cents a gallon, because of lower production at refineries.

More on why gas prices often seem to rise faster than they decline:

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