(CNN) More than 65 million people from California to Tennessee are under some type of heat alert Sunday, as dangerously high temperatures persist across the Southwest and the southern and central Plains. Among the heat alerts in places Sunday are heat advisories, excessive heat watches and excessive heat warnings. Cities under excessive heat warnings include San Antonio and Austin in Texas; Tulsa, Oklahoma; and Phoenix and Tucson in Arizona. But high temperatures across the southern and central Plains will remain in the triple digits, with heat index values (or "feels like" temperatures) approaching 115 degrees Fahrenheit across parts of Texas and Oklahoma Sunday afternoon. "The combination of hot temperatures and high humidity will combine to create a dangerous situation in which heat illnesses are possible," the National Weather Service office in Tulsa said.

Source: CNN June 13, 2022 00:11 UTC