If you never seen my cast you should check it out. The radar is more detailed all the way down to the county your in, it also has GPS location so it follows you were you are and you can also have as many locations loaded that you want. I've tried all of them because I like knowing were the storms are. My Cast is by far better than any of the others that I have tried.
Our local news channel has one that I like.
Probably because the default settings are for my zip code and the little forecast blurbs are what you'd hear on the local radio n TV channels. Also gives an hour by hour forecast.
Heaven knows they haven't cornered the market and probably get their feeds from somewhere else, but it works for me (I like it better than the "national" apps that I've tried).