SAN DIEGO (CNS) - The average price of a gallon of self-serve regular gasoline in San Diego County rose 7 cents Saturday, one day after increasing 4.8 cents because of reduced supply.

The average price of $3.34 is 18.6 cents more than one week ago and 7 cents higher than one month ago, but 93.9 cents less than one year ago, according to figures from the AAA and Oil Price Information Service.

The reduced supply stems from a partial reduction of production at Chevron's Richmond refinery in Northern California following flaring on Tuesday, according to Jeffrey Spring, the Automobile Club of Southern California's corporate communications manager.

The 7-cent increase was the largest daily increase in San Diego County since an 8.5-cent increase on Feb. 28.

The average price has increased nine consecutive days after dropping 40 times in 42 days, rising 23.4 cents.