If the AMOC collapses as we are already starting to see [0] then at least the European portion of the HN community will be deeply impacted.
If the American South West continues it's path of aridification [1] then plenty of HN member will be impacted as well.
[0]. https://science.howstuffworks.com/environmental/earth/oceano...
[1]. https://www.pnas.org/content/117/22/11856