Years ago, I lived outside a metro area deep in the woods, and the metro response team told us we would be low-priority in the event of a natural disaster. Makes sense: why burn resources to help a few thousand people when a few hundred thousand are suffering. The metro response team told us to prepare for 30 days without support, especially electricity (we were ALL on well water) or accessible roads.

We formed a dozen smaller neighborhood teams that met regularly to identify elderly people who would need check-ins, medical needs, resources people were willing to share. This was in addition to family prep: water, first aid, food, batteries, etc. We even did an emergency rations taste-off (they all suck, btw) and bought a community cargo container that we filled with community supplies (I had left the hood by that point).

It was surprising that about 10% of the people in each area refused to participate. Most were pissed that we even had their names on a spreadsheet, even though they were older and might need assistance. They felt we were intruding on their privacy and they didn't need our help. However, we included them in the calculations for emergency resources in case they decided to come around after a disaster happened.

TL;DR: city recommended rural folks be prepared for a max 30 days on your own.