A heat dome happens when hot air is trapped over an area due to a persistent high pressure system, William Gallus, a professor of atmospheric science at Iowa State University, said. Heat domes can last for days to weeks and can stretch over multiple states.

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

We have been tracking another round of isolated storms this evening. Some of these have brought heavy rain to some areas around the region. Friday: The “cooler” weather is still on tap for the end of the work week.

FOX Weather meteorologists and correspondents shared their top items to stay cool during hot weather. From cooling towels and protective hats to hydration essentials and beauty finds, shop these hot weather must-haves.

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

A heat dome dries out the ground and air above it, which deters thunderstorms, but means drought can begin or worsen. A heat dome is also known as a ridge of pressure, blocking high and death ridge.

Rsing temps and road rage are a costly combo. discover the mental and financial impact on drivers and their car insurance rates.

Feel the sweltering heat in South Carolina as a 'heat dome' brings 110-114°F indexes. Stay safe with tips and updates from News19 WLTX.

Dangerous heat is peaking today for millions in the central United States as a heat dome in summer’s hottest month lives up to its reputation — but sauna-like conditions are only just beginning for areas farther east.