Gasoline prices rose slightly Monday after Hurricane Ida shuttered refineries along the U.S. Gulf Coast.

RBOB gasoline futures jumped 2.4 cents to $2.30 per gallon, pulling back from their overnight high of almost $2.37.

“The biggest impact we’re going to see is on gasoline and diesel prices, which are up just modestly this morning,” said Andrew Lipow, president of the Houston-based consulting firm Lipow Oil Associates.

He added that gasoline inventories are “adequate,” but that delays in deliveries could cause “sporadic outages” in the Southeast.

While gasoline prices are moving higher in the futures market, that hasn’t yet translated to higher prices at the pump. Although some stations raise prices immediately, it takes about three or four days to be felt regionally.

Retail gasoline prices have seen a “slight increase” as a result of the storm, said Phil Flynn, senior market analyst at Price Futures Group. Gasoline prices ticked up to $3.151 per gallon nationally, up from $3.148 on Sunday.

Flynn expects there will be damage to some refineries that could cause them to be “shut down for weeks” which will cause prices to “edge higher.”