A significant heat wave is about to impact the Midwest and East, coinciding with the Fourth of July celebrations. A double heat dome is forming, leading to dangerously high temperatures, with heat indices possibly exceeding triple digits in many regions, including Chicago. The heat wave will intensify over the coming week, bringing stifling humidity and a heightened fire threat. Some areas, particularly in Minnesota and central Ohio, may experience record high temperatures. As a result, weather alerts have been issued, advising residents to prepare for severe heat and the potential for storms.