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

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 ...

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, ...

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

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, ...

The National Weather Service issued another extreme heat warning for the Phoenix area Tuesday through Thursday.

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 ...

NWS Las Vegas issues Extreme Heat and Red Flag Warnings in southern Nevada due to high temperatures and critical fire ...

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

A 67-year-old man from Texas died in the Grand Canyon during an extreme heat warning, rangers said. The man was found at about 11:50 a.m. July 8 on the South Kaibab Trail, below Cedar Ridge, the ...