North Carolina placed under a heat advisory Wed.
Digest more
About half the country is under active heat advisories again on Tuesday, affecting more than 168 million Americans, according to the National Weather Service. The extreme heat continues in the Midwest,
NWS issues a heat advisory in Knoxville with a heat index up to 107 degrees, warning of heat illnesses and potential thunderstorms.
The Centers for Disease Control and Prevention (CDC) says that extreme heat can lead to heat-related illnesses, especially for vulnerable populations.
The National Weather Service has issued a heat advisory on July 28 as feels-like temperatures break 100 degrees.
Oklahoma City is under a heat advisory with temperatures feeling like 104 degrees, and residents are advised to stay cool and hydrated.
Dangerous conditions continue across Florida Tuesday, July 29, with most of the state under either extreme heat warnings or heat advisories.
The National Weather Service has issued a heat advisory for Rhode Island and other parts of Southern New England.