March 27, 2006 10:00 AM, EST

Gas Prices Rise 15 Cents in Past Two Weeks, Lundberg Reports

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etail gasoline prices rose an average of 15 cents for the two weeks ended Friday, according to the latest Lundberg Survey of filling stations released Sunday.

The average price for all three grades rose to $2.52 a gallon, said analyst Trilby Lundberg, who publishes the twice-monthly Lundberg Survey of 7,000 gas stations in the country.

Self-serve regular averaged $2.49 a gallon nationwide in the latest survey. Mid-grade cost $2.59 a gallon while the price for premium was $2.69.

Gasoline prices are 40 cents higher than they were this time last year, Lundberg said.

Among stations surveyed, the lowest average price in the country for regular unleaded was in Salt Lake City, at $2.25 a gallon. The most expensive was in Honolulu, at $2.80 a gallon.