CAMARILLO, Calif. (AP) — The average price of a gallon of regular-grade gasoline fell 7 cents nationally over the past two weeks to $2.56.

Industry analyst Trilby Lundberg of the Lundberg Survey said Sunday that the drop comes as crude oil prices drop and flooded refineries on the hurricane-battered Gulf Coast return to operation.

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Lundberg says she expects further price cuts as refiners make cheaper “winter grade” gasoline.

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The current price is 27 cents above where it was a year ago.

Gas in San Francisco was the highest in the contiguous United States at an average of $3.11 a gallon. The lowest was in St. Louis at $2.20 a gallon.

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The U.S. average diesel price is $2.76, down a penny from two weeks ago.