FOX Weather on Instagram: "☀️DEADLY HEAT DOME: The historic heat dome that broiled the eastern U.S. over the July 4 holiday is being blamed for at least 28 deaths. More than 20 states recorded highs of at least 100 degrees, with heat indices between 105 and 115 degrees. Details: #heatwave #hotweather #newjersey #illinois #mississippi #newyork #washingtondc"