A prolonged, dangerous heat wave will intensify across most of the central to eastern U.S. this week, the National Weather Service said.

Dangerous heat is expected across large swaths of the U.S. this week, according to the National Weather Service.

A heat wave will blast a large swath of the United States this week. The National Weather Service says temperatures rising ahead of the July 4th holiday will feel hotter because…

A heat wave will blast the eastern United States this week

A dangerous heat wave is sweeping parts of the US, but many states set their all-time hottest temperature records decades ago.