Those that continually want to compare a TV channel to a weather app on a smart phone, or web site keep missing the point! TV is passive. You turn it on at the push of a button, and you tune in with 3 button pushes on the same remote. From that point forward you can do anything and leave the weather playing in the background. You look and it's there. With apps and web sites you have to actively seek the web site/start the app look up the info requiring total attention. It's easy to do, but, at least for me, it's two or three minutes where I would have been getting ready for work, or doing other things.
To those saying their local channel's sub-carrier weather is great, I agree. Unfortunately those are going away one by one as stations that get a snapshot of people watching see they never have a large audience (Negligible audience is what the last local station with a weather sub-channel in this market said). It's true, the audience is negligible at any one given instant. However, I guarantee that a significant number of people tuned to the channel for a few minutes throughout the day!