For people under the sweltering influence of a heat dome, the weather pattern can be excruciatingly tedious to endure, Jackson told Scientific American. “Heat domes are generally slow to form and slow to dissipate,” he said.

A heat dome​ is trapping over 90 million Americans in extreme temperatures this week with the National Weather Service​ issuing heat alerts from Nebraska to Florida.

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.

The ‘heat dome’ is expected to generate triple-digit temperatures in the Midlands for several days in a row soon, the National Weather Service says. Here’s what to know.

We’re starting off dry and quiet this Saturday morning, but don’t get too comfortable... more heat is on the way.

The Florida Peninsula and the western tip of the Panhandle could see heat index values between 105 to 110 degrees, which may end up being conservative estimates. High temperatures in Santa Rosa County are currently forecast to hit triple digits starting on Monday. Escambia County highs aren’t far behind them.

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

Around 100 million people are under heat alerts Friday, from coastal Maine to South Carolina and across much of the Midwest and lower Ohio Valley into the Mid-South. Additional alerts are likely in the Southeast as temperatures rise in coming days.