An extreme heat warning was issued by the NWS Raleigh NC on Friday at 1:02 p.m. valid from Saturday 11 a.m. until Sunday 8 p.m. for Alamance County.

Residents across New Jersey will face a challenging weather day, as an Extreme Heat Warning takes effect alongside a developing threat of severe thunderstorms. The National Weather Service (NWS) office in Mount Holly has issued alerts underscoring the potential for dangerous conditions throughout Friday.

At least 100 Americans are on alert for dangerous heat and humidity -- stretching from Texas to Maine -- on Friday.

The NWS Newport/Morehead City NC released an extreme heat warning at 1:21 p.m. on Friday valid from Saturday 11 a.m. until Sunday 8 p.m. The warning is for Mainland Dare, Mainland Hyde, Northern Craven,

Not only will Friday’s heat make for dangerous weather in terms of how it feels outside, but it is expected to fuel storms that will develop by early afternoon.

The National Weather Service released an updated extreme heat warning at 8:19 p.m. on Thursday valid for Friday between 10 a.m. and 9 p.m. for Eastern Montgomery and Lower Bucks as well as Delaware and Philadelphia counties.

Much of the U.S. is under extreme heat warnings or advisories while New York, Philadelphia and Washington could feel like 100 degrees or more.

In many areas of the state, extreme heat warnings have already been issued for the upcoming weekend. Here's what to know.