How far inland did the surge reach? The surge was the biggest problem.
The problem with gas availability is power and movement. Power to run the pumps and movement to get the gas to stations.
The surge definitely reached further inland along the shore; the problem we had further north seems to be that is reached far enough to reach some generating stations in low-lying industrial areas (which were then turned off to minimize damage). Also, some highways were so close to sea-level that even heavy rains alone could flood them.