It may not be an epiphany, but watching just a few seconds of the news coverage I thought of the number of times many of those things had happened to NYC in summer disaster movies.
If I had cameras, boats/kayaks, a few actors & friends to help out, shoot overnight on the deserted river roads, a few lines of dialogue and a rough idea for a story, I'd be out there trying to shoot with big-budget backgrounds that would normally cost tens of millions in sound stages or post-production. Though since I'm currently in Toronto, can't really do it.
If I'd been able to plan (or had the idea a few days ago to be able to plan and know in advance how it would likely look), for perhaps $10-20k (mostly for rented boats, cameras and bail money) could have had a semi-decent looking disaster movie or a good short film. Getting the moment the lights went out from some high vantage points & down on the water would have been amazing too.