A dangerous heat dome has enveloped the Midwest, South and East Coast, bringing prolonged extreme heat to more than 30 states this week.

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

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

Sweltering conditions are expected to last through the weekend

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

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