Data, probably.

BM planned to leverage its Watson technology as part of the acquisition, foreseeing its use for weather analytics and predictions. The deal, which closed the following January,[27] does not include the Weather Channel itself, which remained owned by the Bain/Blackstone/NBCUniversal consortium, and entered into a long-term licensing agreement with IBM for use of its weather data and “The Weather Channel” name and branding

wikipedia page for The Weather Channel

A good way to get GPS data. You “need” gps if you want your phone to show “weather near you”