An extremely dangerous heat wave is underway for the eastern half of the United States as a potent heat dome reaches its peak ...

A heat dome occurs when a large area of high pressure in the upper atmosphere acts as a reservoir, trapping heat and humidity ...

NORRISTOWN — A Code Red hot weather emergency declaration in Montgomery County was extended through Wednesday as a heat wave ...

A dangerous heat wave has set in, leaving nearly 150 million people from Texas to Maine under heat alerts on Monday.In some ...

An intense and nearly historic weather pattern is cooking much of America under a dangerous heat dome this week with ...

Utility providers across the Midwest and East reported tens of thousands of power outages due to this week’s heat wave.

The first major heat wave of the summer is firing up across the eastern half of the U.S. this week, with major cities along ...

The high temperature so far at Philadelphia International Airport reached 99, breaking a record high of 98 set last year.

PECO is working to fix outages from last week’s storm. But thousands of customers are without power for A/C as temperatures ...

An "extremely dangerous heat wave" is continuing to scorch a huge area of the eastern United States June 23, affecting tens ...

It's oppressive outside today in Pennsylvania, as heat indices may near 110 degrees. When is relief on the way? Here's the ...