if you have dish network and wondering why you lost your HD channels including The Weather Channel HD, the answer is, a satellite failure has happened.
sometime yesterday (as it's past Midnight Central time as i'm posting). the satellite on 129 failed big time and all the HD channels on 129 went away. Dish knows the problem and are trying to fix it. so don't worry, there's no dispute over carriage of these channels at this time, as the HD channels are also on another satellite for the east coast setup. the 129 setup is mostly west coast.
for more info, i suggest you check up with SatelliteGuys.US and DBSTalk.com as well as Dish's website and their facebook and twitter account if you haven't gotten updates yet.
i hope the HD channels return real soon.