The heatwave was caused by a large area of high pressure in the upper atmosphere—known as a "heat dome"—which traps heat and humidity in the lower atmosphere, blocking cooler air from coming in.

ABOVE: The Beechcraft Denali and its GE Catalyst engine are both anticipating 2025 certificaiton. Textron’s new single-engine turboprop currently in development, the Beechcraft Denali, has made its ...

Dangerously hot and humid conditions are choking nearly the entire eastern half of the United States this week, caused by a “heat dome” that's parked over parts of the country.