Heat waves like the one that engulfed parts of parts of the South and Midwest and killed more than a dozen people are becoming more common, and experts say the extreme weather events, which claim more lives than hurricanes and tornados, will likely increase in the future.
A heat dome that pressured the Texas power grid and killed 13 people there and another in Louisiana pushed eastward Thursday and was expected to be centered over the mid-South by the weekend. Heat index levels of up to 112 degrees (44 Celsius) were forecast in parts of Florida over the next few days.
