htperry;n85108 said:
Many non-hams would be surprised at how prepared ham radio operators are for lights-out communication.
For many, it's what they live for.
It's funny how ham operators are perceived as nerdy, not with it, individuals, but have actually lead the way at the forefront of movements. They arguably pioneered one of the first forms of social media (Listen to a rag chew about some one's day and their doctor visit. Just like Facebook.) and have long been involved in preparedness, among other things, including international foreign relations.
Back to the OP's concerns. Cell towers are incredibly durable things. Have you ever noticed that many news in hurricane/tornado reports come via cell phones in the effected area? What you hear more of are system overloads when everyone in an area is making or receiving calls.
Radio communications has a learning curve just like shooting. First you have to understand your needs and what investment it will cost in time and money to become proficient in using those tools.
I'm obviously a believer in amateur radio, but and alternative for your described need, albeit an expensive one might be Sat phones.
Another thing to consider is a predefined comms and action plan. Where will you go or what will you do if you cannot communicate to each other directly. What about contact with a 3rd party outside your effected area? Say your cell phone service is out but someone else’s works or you find a land line active. Have everyone, kids too, call, for example, Aunt Martha who lives out of state. Let her be the messaging center. Not everyone may be able to get to some form of comms at the same time. This would allow some form of check in to let the others know everyone is OK or not.
This could even be expanded to ham radio as a messaging center. Think Red Dawn and Radio Free America.