The Centers for Disease Control and Prevention (CDC) says that extreme heat can lead to heat-related illnesses, especially for vulnerable populations.

Severe storms were expected to rip across parts of the northern U.S. on Monday, bringing numerous hazards to multiple states.

About half the country is under active heat advisories on Monday, affecting more than 198 million Americans, according to the National Weather Service . The extreme heat is expected in the Midwest, ...

Damaging and potentially destructive thunderstorms are set to roar through the northern Plains on Monday, fueled by intense July heat and humidity.