We knew this was coming at some point, though. They system has been "frozen in time" since before the HD launch, if I remember correctly. Plus, WATT makes a lot of the WeatherScan product redundant (at least on the surface). Yes, I know there are products not featured or offered on WATT, and that certain viewers don't actually see weather "all the time" but it's close enough that they most likely have no qualms about phasing it out.
I agree, but Weatherscan is surprisingly popular in areas where it's still offered. I remember Evan saying on here that ratings for it on his cable system were above ESPN at one point. That's pretty damn impressive if you ask me.
I think Weatherscan will be around for a while, and TWC will probably keep the data feed and everything else for it running until the IS units start bursting into flames, or they go ahead and kill it off themselves - that would be my guess.