Eighteen states throughout the U.S. could see extreme heat this week with temperatures soaring past 100 degrees.

A widespread heat wave is pushing dangerously high temperatures across large parts of the United States this week.

"These levels of heat mean health impacts become more likely in general," the National Weather Service warned.

The update adds multiple levels of visual “hatching” that distinguish the potential power of storms, rather than only the probability that they will occur. According to the National Weather Service, ...

Another winter storm is on track to slam the East Coast this weekend, bringing more snow to states still reeling from Winter Storm Fern. The latest forecast map from the National Weather Service shows ...