The National Weather Service issued heat advisories for a large swath of the East Coast through much of the weekend.

Heat advisories were in effect for a large portion of the East Coast from central Florida to Virginia through much of the weekend.

Around 100 million people are under heat alerts Friday, from coastal Maine to South Carolina and across much of the Midwest and lower Ohio Valley into the Mid-South. Additional alerts are likely in the Southeast as temperatures rise in coming days.