Google maps allows you to save maps for offline use, but I'm sure there are other similar services, or you could just download some images. The emergency alert

Google maps allows you to save maps for offline use, but I'm sure there are other similar services, or you could just download some images. The emergency alerts on broadcast TV and radio wouldn't reach most people today, so it's worthwhile to have the emergency alert apps from such organizations as the Red Cross, FEMA, and CodeRED; and possibly your local newspapers and TV stations. I live near a nuclear power plant, so I am also subscribed to a local grassroots organization that monitors it. Some organizations also have SMS alerts, which might work when the general internet doesn't. Broadcast radio is still important though, so if your phone supports it, get a real radio tuner app. Nextradio works for fm radio. Since these use your headphone cable as the antenna, one feature to look for is the option to play audio through the speaker despite the headphone being plugged in. I'd be interested in any radio apps that work for other bands. There are many that claim to receive NOAA radio, police radios etc. but AFAIK they are all internet streams. (Still worth checking out ahead of time.)