Extreme heat warnings and heat advisories were issued across parts of the U.S. Southwest and Pacific Northwest on Friday.

Gov. Gavin Newsom on Thursday announced the launch of a new, first-in-the-nation tool to forecast and rank heat severity in ...

Heat advisories have been issued for large areas of California, as forecasters expect temperatures to climb above 100 across the state this weekend.

Southern California residents are bracing for what forecasters say will be the hottest day of the week on Friday. “We’re looking at a heat advisory that’s now in effect, and if you’re traveling ...

Languages: English. Four states are at risk for extreme heat-related impacts on Thursday, according to a map by the National Weather Service (NWS) HeatRisk. Extreme heat is expected over the next ...

7. [Heat-wave map: See where Americans face the most extreme heat risk] Heat fell upon the country in waves, causing a spate of record-breaking temperatures across the Southwest in June ...

USA TODAY tracks the the maximum heat index forecast across the U.S. every day (click on 'View Fullsize Map' to see the full week): This week's extreme heat increases the risk of fire in the West ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. A National Weather Service mapping tool ...

Scientists say 4 billion people experienced at least one extra month of extreme heat because of human-caused climate change ...

Extreme heat brings with it a diverse set of problems ... Los Angeles County has an interactive online map listing the hours of 171 cooling centers, the U.S. Forest Service oversaw record amounts ...