Brian Steinberg Senior TV Editor CBS is forecasting that viewer interest in the ins and outs of national weather is about to gain new wind. Wendy Fisher, a longtime senior executive at ABC News who ran its newsgathering operations, has been named to lead a newly formed national weather-news operation that will work with both national and local news programs across CBS’ news-and-stations unit. “This is a significant team effort, as Weather coverage plays a role in virtually every program produced by CBS News and Stations,” said Adrienne Roark, president of content development and integration for the Paramount Global division, in a memo sent to staffers Monday.