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There are two issues with using radio for emergency issues at present(at least in tornado alley).
1. At present, commercial radio (AM or FM) does not cover severe wether at all. Other than TV, the only weather coverage is on the flawed weather radio systems.
2. There is no way radio can replace the modern severe weather coverage (doppler radar, etc) available on TV. A picture is truly worth 1000 words.
As peoples lives are at stake, I think money can be found. As to the transmitters, new ones can be built-all it takes is money.
In fact, as the coverage area is less for DTV than NTSC(less people see the commercials with DTV), I would bet that some stations would love to remain analog if given the chance(In addition they could advertise-and it would be correct-that their weather coverage is more reliable than others).
The main two things that need to happen is a change in the stupid law(let the marketplace decide) and some money returned to Verizon, etc. I do not believe that any one needs to "choose" a station-they would choose themselves.
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