A dangerous and prolonged heatwave is forecast to impact central and eastern United States this week. Temperatures are expected to soar above 38 degrees Celsius (100 Fahrenheit), potentially reaching record highs in several areas. The extreme heat is anticipated to peak during the July 4th holiday weekend, posing risks to public health. Authorities are urging residents to take precautions, including staying hydrated and seeking air-conditioned environments. The heat dome is expected to stretch across a significant portion of the country, impacting millions of people. This weather event raises concerns about strain on energy grids and potential heat-related illnesses. Residents are advised to monitor local weather updates and heed safety recommendations.