Bitter temperatures are forecast to hit swathes of the U.S. this weekend as a polar vortex—the area of cold air that ...

Have you ever wondered what goes in to creating a temperature outlook map? First Alert Meteorologist Jonathan Cranford has a ...

States across the central and eastern U.S. are under extreme heat watches and warnings as the areas face a dangerous heat wave throughout the first half of the week, according to the National Weather ...

Nicole Brown Chau is a deputy managing editor for CBSNews.com. She writes and edits national news, health stories, explainers and more. Nikki Nolan is a meteorologist for CBS News and Stations. She ...