Yeah, this thread is getting somewhat removed from the
original question, so what the heck. I’ve often thought
that vehicle radios should have a location-based weather
radio built in
Your radio could pickup information that's being broadcast all the time. If your car has a builtin navigation systems (figuring out its location is the hard part for the radio -- cell phones already have geolocation builtin), HD radio stations send a lot of digital information in the subcarriers.
https://github.com/KYDronePilot/hdfm
hdfm displays weather and traffic maps received from iHeartRadio HD radio stations. It relies on nrsc5 to decode and dump the radio station data for it to process and display.
Likewise, SiriusXM satellite data services has advanced digital data weather feeds as part of its aviation packages. You could install it in your car instead of your airplane. If you can afford a private airplane, you can afford the SiriusXM aviation subscription cost.
The challenging part for government is creating a public warning system inexpensive enough, its available to everyone, not just people who can afford private airplanes.
The challenging part for government is creating a public warning system inexpensive enough, its available to everyone, not just people who can afford private airplanes.
We could use the one that was already built for this: The NOAA All Hazards radio network (). It uses 7 nationwide frequencies and 1025 radio transmitters to cover 95% of the US. It costs around $20 for a basic receiver. A car could easily just listen to the 7 frequencies and wait for the alert tones. If you want to get fancy you could overlay GPS to detect the county and use that to filter the alerts to the county you’re currently in.