The Blizzard of ’78 was the initial kick in the pants. When we built our house I wanted to have the option of wood heat. We heated solely with wood for 6 years then put in a propane boiler that gave hot water and baseboard heating on the first floor. Several years ago my wife expressed a nervous feeling about the future (as in SHTF) and asked what we could do. She’s since regretted that request. We’re good for several months if something happens. It could be better but available room and finances are constricting our options.
The problem with communicating with other people in this type of situation is that both (or more) parties have to be willing and able to monitor for incoming messages. If you are talking about the immediate meighborhood around you, consider audio/visual signals as in your own warning flag on your house or a loud siren that you can set off to alert people that there is an event going on. Of course, this might create problems for you too, especially with an audio alarm system since you probably will have neighbors who simply don’t want to have a siren going off. In any case, once your neighborhood is aware that there is a local event going on they can turn up their situational awareness sensitivity meter and determine what the problem is. You can lead a horse to water but you can’t make him drink.