Major heat wave to expand from Midwest to East Coast, and it could last all week NBC News Technology By: 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.