Each local National Weather Service office issues 3 different heat alerts to classify the appropriate level of risk posed by the heat. Just like for tornadoes and severe thunderstorms, the NWS issues ...

As a heat wave hits multiple U.S. states, some areas are have been placed under extreme heat watches and warnings.

Extreme heat is impacting states across the country. See maps of high temperature forecasts and heat index levels.

An Extreme Heat Warning has been issued for the Coachella Valley causing the Imperial Irrigation District (IID) to place a ...

Much of San Diego County will be under a heat advisory later this week, while extreme heat is forecast for the desert areas, ...

National Weather Service extreme heat warnings remain in effect from 11 a.m. to 9 p.m. June 23-24 for Augusta and Rockingham counties. A heat advisory is in effect for the central Shenandoah Valley, ...

Philadelphia is under an extreme heat warning with heat index values up to 105 degrees, advising residents to stay cool and hydrated.

NEW YORK CITY (PIX11) – An extreme heat warning is in effect for Sunday in New York City, according to the National Weather Service. The warning starts at 12 p.m. Sunday and lasts through 8 p.m ...

Extreme heat warnings were issued through the weekend by the National Weather Service across Arizona, including the Phoenix ...

Extreme Heat Warning issued by NWS for the Baltimore/Washington DC area with heat index values up to 111 degrees.

A 67-year-old man from Texas has died while hiking the Grand Canyon, according to park rangers who are warning of extreme ...

An extreme heat warning was issued by the National Weather Service in Milwaukee-Sullivan on Friday, June 20 for Milwaukee, Racine and Kenosha counties. The warning extends from noon Saturday, June ...