From: Darlene in Brunswick
Q: Does the weathercaster really have the weather maps behind them?
A: No, the Weather maps are electronically placed behind the weather talent through a process we call a chromakey. It's basically a green wall that talents stands in front of. The production switcher in the control room replaces everything in the picture that is green with the weather maps. The talent only see their maps by looking at the TV monitors off to their side and in front on them on the camera. If Mark, Betsy, Hollie or AJ were to wear green clothing, you'd see the maps over top them.