Having lived through three hurricanes, the first thing to go are containers for fuel, even before the stations run out of gas. Everyone should have containers for water and gasoline. I keep six, empty 5 gallon gasoline containers that have seen use in all three hurricanes.
It's a simple matter to run down to the station and fill them up at the first sign of trouble. It's what you folks on the East coast should be doing NOW! They will quickly disappear in the stores as the hurricane approaches.
Not only will it eventually go bad, it's dangerous to store more than maybe a small amount for the lawnmower and etc for an extended period. You might also check local ordinances on quantities of flammable liquids you are allowed to have on hand.