The average price of a gallon of self-serve regular gasoline in Riverside County rose seven-tenths of a cent Saturday to $4.315.

The average price is one-tenth of a cent more than one week ago, six-tenths of a cent more than one month ago and $1.15 more than one year ago, according to figures from the AAA and Oil Price Information Service.

It had dropped a half-cent on each of the two previous days.

The magnitude 4.3 earthquake in Carson last Friday caused refinery issues that prompted Los Angeles wholesale gasoline prices to increase but “the wholesale price surge has not yet affected pump prices and it may not have much effect because of plentiful imported gasoline,” said Jeffrey Spring, the Automobile Club of Southern California’s corporate communications manager.

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