The private weather services (Accu-Weather and TWC) get all their data from NOAA/NWS. They simply do not have the resources to gather the data (satellites, Cray computers etc); they just put their own predictions together. TWC is mainly entertainment now. IMHO, the data gathering and forecast probality should be left to NOAA/NWS. Ever notice that they never say it WILL rain, rather that it MIGHT rain ....
Another note - Ole ex-Senator Ric Santorum wanted to privatize (Accu Weather is in State College PA). Groups like BOAT US were vehemently opposed to this and contributed to his opponent. Lots of boaters could give a rat’s a!! about abortion but wanted to keep the free non-commercial weather radio.
Remember when Joe B@atardy of Accuweather was claiming the weather data was too important for regular people to access and that all reports should be filtered through a middle man?