I didn't see this coming... so soon, but it isn't surprising. When networks merge or reorganize, there are almost always layoffs. Some positions only need so many people in them - and if NBC is adding it's meteorologists to TWC's current staffing (which we can assume based on the meteorologist titles on Weather Plus being renamed to "TWC Meteorologist"), TWC just doesn't need as many.
Hopefully, we'll find out what positions were effected by the layoffs soon.