We seem to be discussing two different communication modes here - sending out the word that you are OK to others (unless you are not , and that is important, too) or receiving info on surrounding conditions. The latter information is more likely to be significant in dealing with whatever situation is occurring.

As one who lives in a major earthquake zone (prone to wildfire, as well), I will be quite occupied in dealing with immediate conditions, and while I certainly want to let relatives and loved ones know we are OK, that can wait a bit. Fore receiving information, a good AM-FM-WB radio with enough batteries will suffice. In due time, one can send a brief, concise, informative text message, giving the thumbs up.