I've seen recommendations for locations near the Great Lakes. Upper peninsula of MI, for example. Plenty of water. A warming climate should actually make the winters there somewhat less harsh.
Given it took FEMA ten days to get power restored to the super dome, how long will responses be when there are many simultaneous disasters of that size or bigger? With the current admin the answer could be “indefinite”
Excess rainfall creates an explosion of brush that during the now annual drought turns to tinder.
Eventually only desert remains viable, and everything above it, including arability, is locked away forever.