And climate change had nothing to do with it. It was simply a timing issue. It was a typical North Atlantic hurricane that as it became extra tropical, it got sucked into a run of the mill developing low.
It was that unusual timing of events that produced such a large in area storm, that produced such a high surge.
It had nothing to do with climate change.
Of course there is the Galveston Hurricane of horse and buggy 1900, which still is in terms of death the worst natural destruction in US history. Not much CO2 back then. Lots of manure... like now.