Right, 5 or 6 dollars per gallon instead of 3 if those refineries are damaged badly.
With the storm heading a bit farther east, the refineries may be OK. But it's current track takes it right over the densest concentration and biggest distance (from the coast) of oil rigs and platforms in the Gulf. Not good. But the supply restriction should be fairly temporary, unless a large number of rigs/platforms are very badly damaged.