Unease of unknown boosting gas prices

Larry Lamb of Sandersville, Ga., puts $25 in gas into his truck. "It takes more than $100 to fill it up; this will get me about 100 miles," he said. Gas prices have risen 19 cents a gallon in the past week.

Gas prices rose 19 cents last week. More nickels or dimes are expected this week.

"We could see anywhere from 5 to 10 cents," said Jessica Brady, a spokeswoman for AAA Auto Club South.

Prices at the pump have been on the rise since the second week of February. They spiked last week after concerns that Libya's oil exports would be disrupted became a reality.

Libya supplies more than 1.6 million barrels of crude oil a day and disruptions cut exports by about 1 million barrels, according to a AAA news release. The United States gets only 0.5 percent -- about 51,000 barrels a day -- of its total crude imports from Libya, according to the Associated Press.

"No one knows how the events will unfold in the Mideast, whether things will escalate and worsen and oil production or supply will be disrupted further or whether things will come together and start to settle," Brady said. "We really have no idea to what extent gas prices or the price of oil will be affected."

The national average price of regular unleaded gasoline is $3.35 per gallon, an increase of 19 cents from last week.

Georgia's average price increased by the same amount last week and is now at $3.28.

Last year at this time, gasoline cost $2.70 at the national level.

"Unfortunately it's a wait-and-see game," Brady said.