‘Heat dome’ threatens sweltering conditions for World Cup fans and players

Extreme heat will greet fans and players this week at the World Cup, as an imposing “heat dome” settles over the central and eastern United States – plus parts of Canada – as the knockout rounds progress.

The weather phenomenon known as a ‘heat dome’ – a large area of high pressure that traps heat and humidity – could lead to dangerously high temperatures, with heat indices set to hit 105 to 115 degrees Fahrenheit in parts of the Midwest and East Coast, according to the U.S. National Weather...