I moved to OKC last summer, and since torando season is right around the corner I was looking to buy a tornado radio. I've heard of storm type radios which you leave plugged in and turned on, but are quite until a storm activates them. Then, they'll let out a nice loud screech that'll wake you up and get your attention. Since I'm a heavy sleeper, I'd like to have something like that next to my bed instead of relying on the tornado sirens to get my attention.
I've looked online, but to be honest I can't figure out a lot of the technical stuff they're saying. Anyone have any info on how this system works or what a good radio would be? Thanks.

Dave