Stay up to date with notifications from The IndependentNotifications can be managed in browser preferences.Jump to contentThank you for registeringPlease refresh the page or navigate to another page on the site to be automatically logged inPlease refresh your browser to be logged inAllNewsSportCultureLifestyleSUMMER WEATHER: Heat Dome ExplainedA dangerous heat dome is forecast to affect approximately 250 million people across the central and eastern United States during the Fourth of July weekend, bringing temperatures over 100 degrees Fahrenheit and punishing humidity. Unlike typical heat waves, heat domes are prolonged high-pressure systems that trap heat for a week or longer, preventing cloud formation and leading to potentially record-breaking temperatures. Human-caused climate change has made the conditions for heat domes 150 times more likely, with a developing "godzilla" El Niño pattern further intensifying hazardous heat globally. Heat is the leading weather-related killer in the U.S., causing about 2,000 deaths annually, and recent heat domes have led to significant fatalities in Europe and mass marine life deaths in Canada. The long-lasting nature of these events poses severe risks, including increased deaths, strain on aging infrastructure, severe drought conditions fueling wildfires and potential power outages. In fullWhat is a heat dome? This punishing weather pattern can last for daysThank you for registeringPlease refresh the page or navigate to another page on the site to be automatically logged inPlease refresh your browser to be logged in

Dangerous heat is expected across large swaths of the U.S. this week, according to the National Weather Service.

A heat wave will blast a large swath of the United States this week. The National Weather Service says temperatures rising ahead of the July 4th holiday will feel hotter because…

Millions across the central and eastern U.S. could face days of triple-digit heat index values.

A heat wave will blast a large swath of the U.S. this week. The National Weather Service says temperatures will feel hotter because of the high humidity that's arriving with it.

More than 130 million Americans in southern and Great Plains states were under moderate to severe heat risk over the weekend

Millions of Americans across the eastern half of the US are facing a prolonged stretch of dangerous and potentially record-breaking heat as Americans get set to head outdoors to…

A “heat dome” is expected to bring extremely high temperatures to parts of the country.

A heat dome will push indexes to 115°F across the East this week, arriving along with World Cup matches and America 250 celebrations.

Heat alerts span from Illinois to Florida and across the Northeast and New England.

As millions plan to celebrate the Fourth of July outdoors, meteorologists warn temperatures could soar to record-breaking, life-threatening highs.

Millions across the central and eastern United States are bracing for a prolonged and dangerous heatwave this week, with temperatures set to soar ahead of the Fourth of July…

Sweltering conditions are expected to last through the weekend

A prolonged, dangerous heat wave will intensify across most of the central to eastern U.S. this week, the National Weather Service said.

These unbearably hot and humid summer months are typically made possible by phenomena known as “heat domes.”

A dangerous heat wave is expected to sweep across much of the central and eastern United States beginning Tuesday and lasting through the July 4 weekend, when the country…

These unbearably hot and humid summer months that put millions of people across the globe at risk are typically made possible by phenomena known as heat domes.

A dangerous heatwave is set to engulf large parts of the central and eastern United States from Tuesday through the July 4 holiday weekend. Forecasters have warned of extreme…

Stay up to date with notifications from The IndependentNotifications can be managed in browser preferences.AllNewsSportCultureLifestyleHeat Dome Risk - What to know with rising…

Meteorologist Ryan Maue described it as a "mega heat dome" ...

A prolonged, intense heat wave will make temperatures feel as hot as 115 degrees Fahrenheit in the eastern U.S. this week