I was reading an article that is unrelated to aviation. This has to do with the collapsing ocean current in the Atlantic. In case you are interested in reading it you can see the story at...
Knowing what I know about this subject (which is a great deal) it came to me that this change could have a very serious impact on travel in the US. If the current fails which seems likely now the winters in the north and east would become much more severe. Imagine the winter of 1978. That will be considered average. Airports on bodies of water will be vulnerable because of lake effect and ocean effect snows. Coastal airports from DCA to BOS will be vulnerable because of powerful noreasters. High risk airports would be MDW, ORD, DTW, CLE, PIT, PHL, DCA, JFK, LGA and BOS. I am sure I have missed a few in there. These airports I have listed represent a very significant chunk of air traffic in the US.
How would the airlines attempt to cope with this? Look at the problems the storms caused this past winter. We would be talking about winters that are much worse than that. How did the coastal airports deal with the big storms recently?
If you are interested in finding out more about this change that is about to take place just ask. I'll be happy to share what I know on the subject.