Gasoline prices revved up in the two weeks after Hurricane Harvey shut down refineries.

In the survey on Sept. 8, the average price of regular gasoline was up 30 cents at $2.69 per gallon.

It added that consumers in the south, southeast and mid-Atlantic states were the most likely to experience sharply higher prices at the pump because those regions rely on gas from the Gulf Coast more than others.

Hurricane Irma, which hit Florida over the weekend, could also impact Gas Prices in September, the group warned.

The average price of diesel jumped 16 cents to $2.73 per gallon, according to Lundberg Survey.