Major heat wave to expand from Midwest to East Coast, and it could last all week NBC News Technology Christine Rapp and TJ Swigart and Josh Cradduck and Dennis Romero and Kathryn Prociv and Elysee Barakett and Patrick Smith 17 June 2024 at 15:25 As the solstice approaches, a strong heat wave is hitting the East Coast and Midwest. It's expected to last through Friday and beyond.