A long-duration heat wave is taking shape over the western half of the U.S. and is forecast to stick around in the days ahead. A high-pressure system in place over the West is keeping precipitation ...

As a heat wave envelops the West, 32 million people from Texas to California are on alert for life-threatening temperatures. Thursday and Friday will be the hottest days, when temperatures could ...

A heat wave that spent two weeks baking the western United States is now migrating into the Central and Eastern states, where temperatures running 20 to 30 degrees above average could tie or break ...

A heat dome is building over the western U.S., and temperatures are expected to reach up to 119 degrees in some areas. The extreme heat is expected to worsen wildfire conditions in California, Arizona ...