23 states placed under 'extreme heat warning' by National Weather Service for Fourth of July weekend

Nearly half of all U.S. states are now under an extreme heat warning ahead of the July 4th weekend. Here's where it's expected to be hottest. (Photo: NWS) ...

Why the National Weather Service has changed its wording for heat alerts

ROCHESTER, N.Y. (WROC) — Hundreds of millions of Americans are under some type of Heat Alert at some point this week. For ...