CBS: “A sweltering summer heat wave will grip an unusually vast swath of the nation this week.”
“270 million people — that’s 84% of the continental U.S. population — will see highs above 90 degrees at least one day this week, and for most, it will be multiple days. At one time or another, about 150 million people will sweat through heat index numbers over 100 degrees.”
“While the heat wave will be expansive, it will not be very intense — at least at the beginning of the week. However, as the week wears on, the heat dome will recenter and intensify, bringing widespread heat index numbers of 105 to 115.”