Gas prices could spike due to Tropical Storm Barry

(CNN) - You could be seeing higher gas prices thanks to Tropical Storm Barry.

SAN FRANCISCO - MAY 07: A customer pumps gasoline into his car at a service station May 7, 2007 in San Francisco, California. Gas prices reached a record national average price of $3.07 per gallon of regular unleaded, up over twenty cents in the past two weeks. San Francisco leads the nation with the highest average price of $3.49 per gallon. (Photo by Justin Sullivan/Getty Images)

Rising oil prices have been causing the national average price of gas to increase in recent weeks. Now, the storm could cause some of the country’s major gasoline refineries to shut down and drive prices even higher.

There could also be supply problems.

Overwhelming rain could also cause some refinery outages and constrict fuel supplies along the gulf coast.