The heat wave baking large swaths of California is driven by a large ridge of high pressure building over the Great Basin. ... What’s causing it, and areas seeing excessive heat warning.

The National Weather Service (NWS) has issued an alert for extreme heat which is expected to expand from the Great Basin, Nevada, to parts of the Central Valley of California, with widespread ...

The National Weather Service has extended an Excessive Heat Warning and Heat Advisory for California's interior and Sierra Nevada mountains until the evening of Friday, July 12.

Each local National Weather Service office issues 3 different heat alerts to classify the appropriate level of risk posed by ...

Californians aren’t being spared from the heat this week despite fall approaching. Parts of Southern California are under an excessive heat warning Tuesday as a heat wave brings rising ...

The National Weather Service has extended an Excessive Heat Warning and Heat Advisory for California’s interior and Sierra Nevada mountains until the evening of Friday, July 12.

The heat has not been limited to the Southwest and California. Dozens of Colorado cities, including Denver, have set or tied all-time October temperature records since Tuesday.

Although there will be slight relief on Monday and Tuesday, high temperatures will continue this second week of July in Northern California.