A heat dome happens when hot air is trapped over an area due to a persistent high pressure system, William Gallus, a ...

The National Weather Service has sent out millions of extreme heat warnings, heat watches and heat advisory alerts this week, ...

The National Weather Service already has issued extreme heat warnings, watches and advisories across a swath of the Midwest ...

The blast of heat prompted advisories across much of Massachusetts, Rhode Island, Connecticut, and in Southern New Hampshire ...

Summer heat just got turned up a notch − and trapped under a lid. About 100 million people will see 100-degree days the rest ...

We have been tracking another round of isolated storms this evening. Some of these have brought heavy rain to some areas ...

Another heat dome is moving over Illinois this week as temperatures near the triple digits. Here's what that means and when ...

A heat dome dries out the ground and air above it, which deters thunderstorms, but means drought can begin or worsen. A heat ...

Almost 85 million Americans from South Dakota to Texas and North Carolina to Florida are already under extreme heat warnings, ...

A heat dome​ is trapping over 90 million Americans in extreme temperatures this week with the National Weather Service​ ...