One of the great blessings of modern society is our incredible communications abilities. We can video chat with people on other continents, check email from almost anywhere, and are generally spoiled by the ease with which we can communicate. Disasters can quickly disrupt the communications systems that we normally rely on. Without cell towers cell phones become largely useless. Without power there is probably no internet.
If you want to communicate during a disaster you need your own communication gear that is autonomous.